Asteroids down again

Zinfer

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Game plays blind. Spot killer LED lit. Blows 2amp F700 fuse. F600 is always fine. Ran a cap kit. Replaced all chassis mounted transistors and laid plenty of heat sink compound and mica's. I checked all Transistors before throwing the monitor back in, no continuity to the frame. After plugging in, turning on, blew F700 fuse, Spot killer lamp lights. I double check the chassis transistors and both 2N3716's show continuity to monitor frame while the 2N3792's do not. Oscope X and Y out giving good signals from PCB. Appears fine and game is in attract mode.
I'm starting to think this Cabinet has a curse on it. I had just had it up and running earlier this week. Why would 2n3716's show isolation from frame, then when monitor plugged in, they show continuity?
 
Usually you can get this thru the connector to the deflection board. Unplug that connector and see if you still have continuity to the frame. If so, something on the deflection board is probably shorting them out.

Oh, and this should be moved to the monitor help section...
 
Meh your right, this really is a monitor issue. I can't find an option to move it. Not sure whether to post a new thread in technical monitors or wait and see if I can snag a moderator. But you are right, when I unplug the deflection board, no more continuity.
 
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