From vmi at csprings.com  Tue Aug  2 10:35:36 2011
From: vmi at csprings.com (Videomagnetics)
Date: Tue, 2 Aug 2011 09:35:36 -0600
Subject: [QuadList] AVR 3 heads question
In-Reply-To: <4e333.21bc600.3b6870f3@aol.com>
References: <4e333.21bc600.3b6870f3@aol.com>
Message-ID: <026561AA8FA449729A750BCC9765B81F@melissasalesPC>

Lee,
This could be a rotary transformer problem on the head.

Tony
  ----- Original Message ----- 
  From: Chill315 at aol.com 
  To: quadlist at quadvideotapegroup.com 
  Sent: Monday, August 01, 2011 3:13 PM
  Subject: Re: [QuadList] AVR 3 heads question


  Lee

  What does the Demod out look like?

  Chris Hill

  In a message dated 8/1/2011 5:12:28 P.M. Eastern Daylight Time, lasvegastvengineer at yahoo.com writes:
          Hello Larry, 

          Sorry but not the problem, 

          The closest thing I can describe the effect is white streaks with analog snow in them trailing out like a comet tail from the trailing edge of anything white in the picture. 

          No digital blocks, Not a head clog. 

          Thanks. 

          Lee 


          --- On Sun, 7/31/11, LARRY <leodham at centurylink.net> wrote:


            From: LARRY <leodham at centurylink.net>
            Subject: Re: [QuadList] AVR 3 heads question
            To: "Quad List" <quadlist at quadvideotapegroup.com>
            Date: Sunday, July 31, 2011, 6:58 AM


            Hello Lee,

            I have been following some of the back-and-fourth e-mails on your tape playback trouble.
            Here is my two cents worth:

             I have experienced this problem before.
            The video is tearing in what looks to be square blocks? right??
            I have encountered that very same effect here on a VR-1200b. It was caused here by the playback equalization. A good way to verify if this is the problem is to go to manual equalization, and turn down(reduce) the EQ one channel at a time. If you see an improvement, then stop the machine, unthread the tape, and look with a magnifier at the drum surface behind each head tip(trailing surface). You may find a small build-up of black-looking stuff behind one, or all, of the head tips on the drum edge surface itself. 
            This build-up increases the diameter of the head drum just enough to decrease tip penetration at the head.
            Usual cleaning of the tips will not remove this buildup. Alcohol and a fingernail will. CAREFULLY!!

             OK, hope this helps,
            larry
            ----- Original Message -----
            From: "lee williams" <lasvegastvengineer at yahoo.com>
            To: "Quad List" <quadlist at quadvideotapegroup.com>
            Sent: Sunday, July 31, 2011 12:24:33 AM
            Subject: Re: [QuadList] AVR 3 heads question


                  Hello, 
                  Answers below questions. 



                  --- On Sat, 7/30/11, Chill315 at aol.com <Chill315 at aol.com> wrote:


                    From: Chill315 at aol.com <Chill315 at aol.com>
                    Subject: Re: [QuadList] AVR 3 heads question
                    To: quadlist at quadvideotapegroup.com
                    Date: Saturday, July 30, 2011, 9:38 AM


                    Lee

                    How does the RF envelope look on the scope?
                    No Scope - I can tell I have plenty of RF with my tracking adjustment. 


                    How is Vertical lining up with house?
                    AVR3 is on internal generator. No difference if I hook up a black source to the machines. 


                    Do you have an alignment tape?  If so, how does it play and where is the tracking knob?
                    Alignment and known good tapes play fine. 
                    Client has several thousand tapes made in the early 80's (probably on a VR2000) 

                    Are you using manual or auto tracking?
                    Manual normally.  No difference in auto. 

                    30 lines of black may be that you are one or two head passes off in the vertical realm.  The tearing may be due to the fact that you can not get the head centered on the track perfectly.  

                    The head assemblies are made so good that they meet SMPTE specifications with in a few hairs.  This is to create interchangeability between machines.  

                    I would not touch the heads in any way as you will destroy the interchange.  It is a critical factor.  If you saw the recent slide show on here, you see the great deal of care taken to make a head.

                    Now the tape you have may have been done in a non standard method.  That is why all the questions.  

                    I always assume that the tape was poorly made.  Many operations did not do best practices and thus there is a lot of poorly made tapes.  

                    I know it's the tape that is off. (several thousand of them) 
                    Now how do I get them transferred short of sending in the weak head to the rebuilder and have him duplicate the deviation were the head is off of true? 

                    Chris Hill
                    WA8IGN

                    In a message dated 7/30/2011 11:56:38 A.M. Eastern Daylight Time, lasvegastvengineer at yahoo.com writes:

                            Hay all, 
                            Have a good one here ??? 

                            AVR3 Mark XV heads. 

                            Have some 2" tape that when you try to pull it through the machine will will give you something that looks like video tearing in the whites and slow horizontal jitter. 

                            If I slam the tracking all the way down, I get a very clean picture, but about 30 lines of black overhead on the screen. 

                            I see this on all my new(er) heads I get from both Aheadtek and VideoMagnetics. 

                            I have 1 very warn out head (supplier unknown) that will lock to these tapes

                            Has anybody seen this before and is there a way this heads set up can be duplicated? 

                            Thanks 

                            Lee 

                           


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From lasvegastvengineer at yahoo.com  Tue Aug  2 11:01:59 2011
From: lasvegastvengineer at yahoo.com (lee williams)
Date: Tue, 2 Aug 2011 09:01:59 -0700 (PDT)
Subject: [QuadList] AVR 3 heads question
In-Reply-To: <026561AA8FA449729A750BCC9765B81F@melissasalesPC>
Message-ID: <1312300919.59236.YahooMailClassic@web37908.mail.mud.yahoo.com>

Hello Tony, 
Please review the original question. 

All NEW heads ( have gone through 4 in the last 2 years) will not play the old tape stock. 
Only 1 very old head (that is now wearing out) will make a clean picture. 

I know ( guess) the stock was not recorded properly, but what ever is off on the recordings is constant. 

Is there a way to reproduce what ever is tweaked on that odd ball head because my client has a couple of thousand tapes that this head was the only thing that would play them? 

Thanks 
Lee 

--- On Tue, 8/2/11, Videomagnetics <vmi at csprings.com> wrote:

From: Videomagnetics <vmi at csprings.com>
Subject: Re: [QuadList] AVR 3 heads question
To: "Quad List" <quadlist at quadvideotapegroup.com>
Date: Tuesday, August 2, 2011, 8:35 AM



 
Lee,
This could be a rotary transformer problem on the head.
?
Tony

  ----- Original Message ----- 
  From: 
  Chill315 at aol.com 
  
  To: quadlist at quadvideotapegroup.com 
  
  Sent: Monday, August 01, 2011 3:13 
  PM
  Subject: Re: [QuadList] AVR 3 heads 
  question
  

  Lee
  ?
  What does the Demod out look like?
  ?
  Chris Hill
  ?
  
  In a message dated 8/1/2011 5:12:28 P.M. Eastern Daylight Time, lasvegastvengineer at yahoo.com 
  writes:
  
    
      
      
        
          Hello Larry, 
          ?
          Sorry but not the problem, 
          ?
          The closest thing I can describe the effect is white streaks with 
          analog snow in them trailing out like a comet tail from the trailing 
          edge of anything white in the picture. 
          ?
          No digital?blocks, Not a head clog. 

          Thanks. 
          ?
          Lee 
          ?
          
--- On Sun, 7/31/11, LARRY 
          <leodham at centurylink.net> wrote:

          
From: 
            LARRY <leodham at centurylink.net>
Subject: Re: [QuadList] 
            AVR 3 heads question
To: "Quad List" 
            <quadlist at quadvideotapegroup.com>
Date: Sunday, July 31, 
            2011, 6:58 AM


            
            #yiv1220734295  P {
MARGIN:0px;}


            
            Hello Lee,
            ?
            I have been following some of the back-and-fourth e-mails on 
            your tape playback trouble.
            Here is my two cents worth:
            ?
            ?I have experienced this problem before.
            The video is tearing in what looks to be square blocks? 
            right??
            I have encountered that very same effect here on a VR-1200b. It 
            was caused here by the playback equalization. A good way to verify 
            if this is the problem is to go to manual equalization, and turn 
            down(reduce) the EQ one channel at a time. If you see an 
            improvement, then stop the machine, unthread the tape, and look with 
            a magnifier at the drum surface behind each head tip(trailing 
            surface). You may find a small build-up of black-looking stuff 
            behind one, or all, of the head tips?on the drum edge surface 
            itself. 
            This build-up increases the diameter of the head drum just 
            enough to decrease tip penetration at the head.
            Usual cleaning of the tips will not remove this buildup. 
            Alcohol and a fingernail will. CAREFULLY!!
            ?
            ?OK, hope this helps,
            larry
----- Original Message -----
From: "lee williams" 
            <lasvegastvengineer at yahoo.com>
To: "Quad List" 
            <quadlist at quadvideotapegroup.com>
Sent: Sunday, July 31, 
            2011 12:24:33 AM
Subject: Re: [QuadList] AVR 3 heads 
            question


            
              
              
                
                  Hello, 
                  Answers below questions. 
                  ?
                  

--- On Sat, 7/30/11, Chill315 at aol.com 
                  <Chill315 at aol.com> wrote:

                  
From: 
                    Chill315 at aol.com <Chill315 at aol.com>
Subject: Re: 
                    [QuadList] AVR 3 heads question
To: 
                    quadlist at quadvideotapegroup.com
Date: Saturday, July 30, 
                    2011, 9:38 AM


                    
                    Lee
                    ?
                    How does the RF envelope look on the scope?
                    No Scope - I can tell I have plenty of RF with my 
                    tracking adjustment. 
                    ?
                    ?
                    How is Vertical lining up with house?
                    AVR3 is on internal generator. No difference if I hook 
                    up a black source to the machines. 
                    ?
                    ?
                    Do you have an alignment tape?? If so, how does it 
                    play and where is the tracking knob?
                    Alignment and known good tapes play fine. 
                    Client has several thousand tapes made in the early 
                    80's (probably on a VR2000) 
                    ?
                    Are you using manual or auto tracking?
                    Manual normally.? No difference in auto. 
                    ?
                    30 lines of black may be that you are one or two head 
                    passes off in the vertical realm.? The tearing may be 
                    due to the fact that you can not get the head centered on 
                    the track perfectly.? 
                    ?
                    The head assemblies are made so good that they meet 
                    SMPTE specifications with in a few hairs.? This is to 
                    create interchangeability between machines.? 
                    ?
                    I would not touch the heads in any way as you will 
                    destroy the interchange.? It is a critical 
                    factor.? If you saw the recent slide show on here, you 
                    see the great deal of care taken to make a head.
                    ?
                    Now the tape you have may have been done in a non 
                    standard method.? That is why all the questions.? 
                    
                    ?
                    I always assume that the tape was poorly made.? 
                    Many operations did not do best practices and thus there is 
                    a lot of poorly made tapes.? 
                    ?
                    I know it's the tape that is off. (several thousand of 
                    them) 
                    Now how do I get them transferred short of sending in 
                    the weak head to the rebuilder and have him duplicate the 
                    deviation were the head is off of true? 
                    ?
                    Chris Hill
                    WA8IGN
                    ?
                    
                    In a message dated 7/30/2011 11:56:38 A.M. Eastern 
                    Daylight Time, lasvegastvengineer at yahoo.com writes:
                    
                      
                        
                        
                          
Hay all, 
Have a good one here 
                            ??? 

AVR3 Mark XV heads. 

Have some 2" 
                            tape that when you try to pull it through the 
                            machine will will give you something that looks like 
                            video tearing in the whites and slow horizontal 
                            jitter. 

If I slam the tracking all the way 
                            down, I get a very clean picture, but about 30 lines 
                            of black overhead on the screen. 

I see this 
                            on all my new(er) heads I get from both Aheadtek and 
                            VideoMagnetics. 

I have 1 very warn out head 
                            (supplier unknown) that will lock to these 
                            tapes

Has anybody seen this before and is 
                            there a way this heads set up can be duplicated? 
                            

Thanks 

Lee 
                      



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From vmi at csprings.com  Tue Aug  2 11:45:38 2011
From: vmi at csprings.com (Videomagnetics)
Date: Tue, 2 Aug 2011 10:45:38 -0600
Subject: [QuadList] AVR 3 heads question
In-Reply-To: <1312300919.59236.YahooMailClassic@web37908.mail.mud.yahoo.com>
References: <1312300919.59236.YahooMailClassic@web37908.mail.mud.yahoo.com>
Message-ID: <AB24B15E5F8144CDA776FA7E651DB3C2@melissasalesPC>

Lee,
We should be able to help you out. If you could send us a couple  of the tapes in question and the head block we can see what we can do to adjust the head block to match the recording on the tape.   

Thanks   Tony
  ----- Original Message ----- 
  From: lee williams 
  To: Quad List 
  Sent: Tuesday, August 02, 2011 10:01 AM
  Subject: Re: [QuadList] AVR 3 heads question


        Hello Tony, 
        Please review the original question. 

        All NEW heads ( have gone through 4 in the last 2 years) will not play the old tape stock. 
        Only 1 very old head (that is now wearing out) will make a clean picture. 

        I know ( guess) the stock was not recorded properly, but what ever is off on the recordings is constant. 

        Is there a way to reproduce what ever is tweaked on that odd ball head because my client has a couple of thousand tapes that this head was the only thing that would play them? 

        Thanks 
        Lee 

        --- On Tue, 8/2/11, Videomagnetics <vmi at csprings.com> wrote:


          From: Videomagnetics <vmi at csprings.com>
          Subject: Re: [QuadList] AVR 3 heads question
          To: "Quad List" <quadlist at quadvideotapegroup.com>
          Date: Tuesday, August 2, 2011, 8:35 AM


          Lee,
          This could be a rotary transformer problem on the head.

          Tony
            ----- Original Message ----- 
            From: Chill315 at aol.com 
            To: quadlist at quadvideotapegroup.com 
            Sent: Monday, August 01, 2011 3:13 PM
            Subject: Re: [QuadList] AVR 3 heads question


            Lee

            What does the Demod out look like?

            Chris Hill

            In a message dated 8/1/2011 5:12:28 P.M. Eastern Daylight Time, lasvegastvengineer at yahoo.com writes:
                    Hello Larry, 

                    Sorry but not the problem, 

                    The closest thing I can describe the effect is white streaks with analog snow in them trailing out like a comet tail from the trailing edge of anything white in the picture. 

                    No digital blocks, Not a head clog. 

                    Thanks. 

                    Lee 


                    --- On Sun, 7/31/11, LARRY <leodham at centurylink.net> wrote:


                      From: LARRY <leodham at centurylink.net>
                      Subject: Re: [QuadList] AVR 3 heads question
                      To: "Quad List" <quadlist at quadvideotapegroup.com>
                      Date: Sunday, July 31, 2011, 6:58 AM


                      Hello Lee,

                      I have been following some of the back-and-fourth e-mails on your tape playback trouble.
                      Here is my two cents worth:

                       I have experienced this problem before.
                      The video is tearing in what looks to be square blocks? right??
                      I have encountered that very same effect here on a VR-1200b. It was caused here by the playback equalization. A good way to verify if this is the problem is to go to manual equalization, and turn down(reduce) the EQ one channel at a time. If you see an improvement, then stop the machine, unthread the tape, and look with a magnifier at the drum surface behind each head tip(trailing surface). You may find a small build-up of black-looking stuff behind one, or all, of the head tips on the drum edge surface itself. 
                      This build-up increases the diameter of the head drum just enough to decrease tip penetration at the head.
                      Usual cleaning of the tips will not remove this buildup. Alcohol and a fingernail will. CAREFULLY!!

                       OK, hope this helps,
                      larry
                      ----- Original Message -----
                      From: "lee williams" <lasvegastvengineer at yahoo.com>
                      To: "Quad List" <quadlist at quadvideotapegroup.com>
                      Sent: Sunday, July 31, 2011 12:24:33 AM
                      Subject: Re: [QuadList] AVR 3 heads question


                            Hello, 
                            Answers below questions. 



                            --- On Sat, 7/30/11, Chill315 at aol.com <Chill315 at aol.com> wrote:


                              From: Chill315 at aol.com <Chill315 at aol.com>
                              Subject: Re: [QuadList] AVR 3 heads question
                              To: quadlist at quadvideotapegroup.com
                              Date: Saturday, July 30, 2011, 9:38 AM


                              Lee

                              How does the RF envelope look on the scope?
                              No Scope - I can tell I have plenty of RF with my tracking adjustment. 


                              How is Vertical lining up with house?
                              AVR3 is on internal generator. No difference if I hook up a black source to the machines. 


                              Do you have an alignment tape?  If so, how does it play and where is the tracking knob?
                              Alignment and known good tapes play fine. 
                              Client has several thousand tapes made in the early 80's (probably on a VR2000) 

                              Are you using manual or auto tracking?
                              Manual normally.  No difference in auto. 

                              30 lines of black may be that you are one or two head passes off in the vertical realm.  The tearing may be due to the fact that you can not get the head centered on the track perfectly.  

                              The head assemblies are made so good that they meet SMPTE specifications with in a few hairs.  This is to create interchangeability between machines.  

                              I would not touch the heads in any way as you will destroy the interchange.  It is a critical factor.  If you saw the recent slide show on here, you see the great deal of care taken to make a head.

                              Now the tape you have may have been done in a non standard method.  That is why all the questions.  

                              I always assume that the tape was poorly made.  Many operations did not do best practices and thus there is a lot of poorly made tapes.  

                              I know it's the tape that is off. (several thousand of them) 
                              Now how do I get them transferred short of sending in the weak head to the rebuilder and have him duplicate the deviation were the head is off of true? 

                              Chris Hill
                              WA8IGN

                              In a message dated 7/30/2011 11:56:38 A.M. Eastern Daylight Time, lasvegastvengineer at yahoo.com writes:

                                Hay all, 
                                Have a good one here ??? 

                                AVR3 Mark XV heads. 

                                Have some 2" tape that when you try to pull it through the machine will will give you something that looks like video tearing in the whites and slow horizontal jitter. 

                                If I slam the tracking all the way down, I get a very clean picture, but about 30 lines of black overhead on the screen. 

                                I see this on all my new(er) heads I get from both Aheadtek and VideoMagnetics. 

                                I have 1 very warn out head (supplier unknown) that will lock to these tapes

                                Has anybody seen this before and is there a way this heads set up can be duplicated? 

                                Thanks 

                                Lee 

                                 


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From Chill315 at aol.com  Tue Aug  2 12:41:21 2011
From: Chill315 at aol.com (Chill315 at aol.com)
Date: Tue, 2 Aug 2011 13:41:21 -0400 (EDT)
Subject: [QuadList] AVR 3 heads question
Message-ID: <17d70.3899988e.3b6990c1@aol.com>

Tony has a good suggestion.  Everyone is assuming that it is a machine  or 
head issue.  I think there is a tape issue that the AVR-3 is not able to  
correct .  
 
Do you have access to any other machine that you could try the tape?   I 
think you need to start thinking about this from another side.  When you  say 
that the De mod out has problems, I would consider other  possibilities.  
 
Does the label say High Band?
 
If not, how about Low Band Color (LBC)?
 
How does the sync level to video look at the De Mod out?
 
If it is not 100 over 40, that is an indication that the tape may not be  
high band.
 
How about taking a picture of the waveform and picture at De Mod out and  
posting it?
 
Or even a video showing the problems.
 
That will give us an idea of what is going on.
 
Chris Hill
WA8IGN
 
 
In a message dated 8/2/2011 12:46:06 P.M. Eastern Daylight Time,  
vmi at csprings.com writes:

Lee,
We should be able to help you out. If you could send us a couple  of the 
tapes in question and the head block we can see what we can do to  adjust the 
head block to match the recording on the tape.   
 
Thanks   Tony

----- Original Message ----- 
From:  _lee williams_ (mailto:lasvegastvengineer at yahoo.com)  
To: _Quad List_ (mailto:quadlist at quadvideotapegroup.com)  
Sent: Tuesday, August 02, 2011 10:01  AM
Subject: Re: [QuadList] AVR 3 heads  question


Hello Tony, 
Please review the original question.  

All NEW heads ( have gone through 4 in the last 2 years) will  not play the 
old tape stock. 
Only 1 very old head (that is now  wearing out) will make a clean picture. 

I know ( guess) the  stock was not recorded properly, but what ever is off 
on the  recordings is constant. 

Is there a way to reproduce what ever  is tweaked on that odd ball head 
because my client has a couple of  thousand tapes that this head was the only 
thing that would play them?  

Thanks 
Lee 

--- On Tue, 8/2/11,  Videomagnetics  <vmi at csprings.com> wrote:


From:  Videomagnetics <vmi at csprings.com>
Subject: Re: [QuadList]  AVR 3 heads question
To: "Quad List"  <quadlist at quadvideotapegroup.com>
Date: Tuesday, August 2,  2011, 8:35 AM


Lee,
This could be a rotary transformer problem on the head.
 
Tony

----- Original Message ----- 
From:  _Chill315 at aol.com_ (mip://074e78d8/mc/compose?to=Chill315 at aol.com)  
To: _quadlist at quadvideotapegroup.com_ 
(mip://074e78d8/mc/compose?to=quadlist at quadvideotapegroup.com)   
Sent: Monday, August 01, 2011  3:13 PM
Subject: Re: [QuadList] AVR 3  heads question


Lee
 
What does the Demod out look like?
 
Chris Hill
 
 
In a message dated 8/1/2011 5:12:28 P.M. Eastern Daylight  Time, 
_lasvegastvengineer at yahoo.com_ 
(mip://074e78d8/mc/compose?to=lasvegastvengineer at yahoo.com)   writes:

Hello Larry, 
 
Sorry but not the problem, 
 
The closest thing I can describe the effect is white  streaks with analog 
snow in them trailing out like a comet  tail from the trailing edge of 
anything white in the  picture. 
 
No digital blocks, Not a head clog. 

Thanks. 
 
Lee 
 

--- On Sun, 7/31/11, LARRY  <leodham at centurylink.net>  wrote:



From:  LARRY <leodham at centurylink.net>
Subject: Re:  [QuadList] AVR 3 heads question
To:  "Quad List"  <quadlist at quadvideotapegroup.com>
Date: Sunday,  July 31, 2011, 6:58 AM

  
 
Hello Lee,
 
I have been following some of the back-and-fourth  e-mails on your tape 
playback trouble.
Here is my two cents worth:
 
 I have experienced this problem before.
The video is tearing in what looks to be square  blocks? right??
I have encountered that very same effect here on a  VR-1200b. It was caused 
here by the playback  equalization. A good way to verify if this is the  
problem is to go to manual equalization, and turn  down(reduce) the EQ one 
channel at a time. If you see an  improvement, then stop the machine, unthread 
the tape,  and look with a magnifier at the drum surface behind  each head 
tip(trailing surface). You may find a small  build-up of black-looking stuff 
behind one, or all, of  the head tips on the drum edge surface itself.  
This build-up increases the diameter of the head  drum just enough to 
decrease tip penetration at the  head.
Usual cleaning of the tips will not remove this  buildup. Alcohol and a 
fingernail will.  CAREFULLY!!
 
 OK, hope this helps,
larry
----- Original Message -----
From: "lee  williams" <lasvegastvengineer at yahoo.com>
To:  "Quad List"  <quadlist at quadvideotapegroup.com>
Sent: Sunday,  July 31, 2011 12:24:33 AM
Subject: Re: [QuadList] AVR  3 heads question


Hello, 
Answers below questions. 
 


--- On Sat, 7/30/11,  Chill315 at aol.com  <Chill315 at aol.com>  wrote:



From:  Chill315 at aol.com  <Chill315 at aol.com>
Subject: Re:  [QuadList] AVR 3 heads question
To:  quadlist at quadvideotapegroup.com
Date:  Saturday, July 30, 2011, 9:38 AM


Lee
 
How does the RF envelope look on the  scope?
No Scope - I can tell I have plenty of RF  with my tracking adjustment. 
 
 
How is Vertical lining up with house?
AVR3 is on internal generator. No  difference if I hook up a black source 
to the  machines. 
 
 
Do you have an alignment tape?  If so,  how does it play and where is the 
tracking  knob?
Alignment and known good tapes play fine.  
Client has several thousand tapes made in  the early 80's (probably on a 
VR2000) 
 
Are you using manual or auto  tracking?
Manual normally.  No difference in  auto. 
 
30 lines of black may be that you are one  or two head passes off in the 
vertical  realm.  The tearing may be due to the fact  that you can not get the 
head centered on the  track perfectly.  
 
The head assemblies are made so good that  they meet SMPTE specifications 
with in a few  hairs.  This is to create  interchangeability between 
machines.  
 
I would not touch the heads in any way as  you will destroy the 
interchange.  It is a  critical factor.  If you saw the recent  slide show on here, you 
see the great deal of  care taken to make a head.
 
Now the tape you have may have been done in  a non standard method.  That 
is why all the  questions.  
 
I always assume that the tape was poorly  made.  Many operations did not do 
best  practices and thus there is a lot of poorly made  tapes.  
 
I know it's the tape that is off. (several  thousand of them) 
Now how do I get them transferred short of  sending in the weak head to the 
rebuilder and  have him duplicate the deviation were the head  is off of 
true? 
 
Chris Hill
WA8IGN
 
 
In a message dated 7/30/2011 11:56:38 A.M.  Eastern Daylight Time,  
lasvegastvengineer at yahoo.com writes:


Hay all, 
Have a good one  here ??? 

AVR3 Mark XV heads.  

Have some 2" tape that when you try to  pull it through the machine will 
will give you  something that looks like video tearing in the  whites and slow 
horizontal jitter. 

If I  slam the tracking all the way down, I get a very  clean picture, but 
about 30 lines of black  overhead on the screen. 

I see this on  all my new(er) heads I get from both Aheadtek  and 
VideoMagnetics. 

I have 1 very warn  out head (supplier unknown) that will lock to  these 
tapes

Has anybody seen this before  and is there a way this heads set up can be  
duplicated? 

Thanks 

Lee  



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