[QuadList] VR2000 Control Issue

[lee williams]

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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