25k7000 Wiring Question

bungy

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Yes, another K7000 thread. This monitor is in a Terminator 2. I didn't take pictures / notes when I pulled the chassis and I'm not sure that I'm re-installing it correctly. There is a green wire (ground I assume) on the input connector. This game has an isolation transformer so I'm not sure why there's a ground on that connector. Do I attach the other end to the monitor frame?

The reason I'm asking is because my chassis keeps blowing fuses no matter what I do to it.
First, I replaced the HOT, VR, and did a cap kit (including C56 ;)).
Fuse still blew.
Next, I replaced the flyback and HOT, and didn't reconnect the degauss coil.
Fuse still blew.
I just replaced the HOT and VR again and I'm very hesitant to try it out.

I read the K7000 thread and followed the flow chart. Diodes D19-D22 test fine. I checked the upright resistor in the corner and it's ok. C36 & C69 are not shorted. I always reconnect the DAG wire to the neckboard.

Why is that ground on my input connector? And am I creating a hot chassis by connecting it to the frame? Does the remote board have to be connected? What else should I do before the next smoke test?
 
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It is not uncommon for that ground wire to be present on K7000 chassis. Just connect it to the monitor frame.

The remote board should be connected before powering up the chassis.
 
I jumped the gun and the HOT is dead now. Do you know how to test the VR?
 
Just check it for shorts between all points. If you find one, replace it with the same number. Make sure you use an insulator for the VR and the HOT...
 
It's dead too. This monitor is killing me $10 at a time! Thanks for the help mod & Oryk. I'm off to therealbobroberts.net
 
Well, if you get too frustrated with it, you can always pay me to fix it...
 
C38 was it. Got a replacement cap from Bob Roberts (.39uf 200v) and replaced the HOT & VR again and it fired right up. Thanks mod!
 
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