[QuadList] VR2000 Control Issue

[Chill315 at aol.com]

Lee
 
There is only one input to the Intersync that turns on the head and  
capstan.  It comes from the relay control box.  Now if you say that  with the tape 
tension arm lowered and not in the play mode, it starts up by  itself, then 
go into the Intersync.  Not knowing which dash version, you  have, I do not 
want to go much further.  I have the book for a dash 11  version.  This 
would be from about 1971.
 
You can tell the dash number by looking at the back side panel.  There  
should be a tag with the information.  It will have a part number like  
1809927-11.  I will look further to see if I can give you where to  look.
 
Chris
 
 
In a message dated 8/11/2011 11:33:46 A.M. Eastern Daylight Time,  
lasvegastvengineer at yahoo.com writes:

Thanks Chris, 
Appreciate the input. 

Was at  the client last night and I fired up the machine cold with no tape 
in  it. 
For the first 5 minutes, I could hold back the tension arm and  press play 
and the head/capstan would fire up and shut down as normal.  
Around 5 minutes, (with no tape running) the head and capstan  started up 
by themselves. 

Now this looks like a transistor or  capacitor issue. 

I powered down and removed the delay card  behind the main control panel 
(not that). 
What books I have on the  VR2000 indicate that there are 2 switch logic 
cards somewhere in the  unit. 
Unfortunately does not say were. 

This is my first  experience with a 2000, so I guess I am going to learn 
quickly were  everything is. 

Thanks for the help - Everybody ! 

Lee  



--- On Thu, 8/11/11, Chill315 at aol.com  <Chill315 at aol.com> wrote:


From:  Chill315 at aol.com <Chill315 at aol.com>
Subject:  [QuadList] VR2000 Control Issue
To:  quadlist at quadvideotapegroup.com
Date: Thursday, August 11, 2011,  7:53 AM


There was a recent posting about the head and capstan still  spinning after 
the tape came to an end.
 
I looked at the Intersync and VR-1200 control system.  The  best guess is 
that if the VR-2000 has the same or similar control box  with the relays, 
then the ready relay is sticking.  The control  box should have a removable 
cover and the big power resistors that set  torque on the motors.  That is if 
it has a similar design.   I have the books for a B model 1200 and the time 
delay was changed to  solid state some where along the line.  But that should 
not make  a real difference.
 
Caution, there is lethal voltages on the power resistor.
 
Best solution is to let the machine get in the defective  mode.  Then tap 
each relay to see if one is sticking.  Clean  and burnish the contacts.  If 
not, then it is replace the relay  time.
 
Chris Hill
WA8IGN


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