defender red screen

boilerman

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I turned on the defender today, 1st time in 5 months. it show red screen. I had the boards all reworked last year and it worked great the last time it was on. I reseated all the chips on the main board but still nothing.
any idea what the problem might be?
 
I turned on the defender today, 1st time in 5 months. it show red screen. I had the boards all reworked last year and it worked great the last time it was on. I reseated all the chips on the main board but still nothing.
any idea what the problem might be?


I would look at the monitor first, the 3 color transistors next, and the video sync after that.

Does it play blind - red?
Can you tell by looking, does it have sync?

Saltbreez
 
I turned on the defender today, 1st time in 5 months. it show red screen. I had the boards all reworked last year and it worked great the last time it was on. I reseated all the chips on the main board but still nothing.
any idea what the problem might be?

I would suggest checking the voltages from your power supply, I had a similar problem with a Joust and it was not getting +12vdc
 
Is it solid red? Or is everything red?

If solid red, I'd try plugging a different game into the mmonitor and make sure that is working OK first. Chased a board problem for a week only to find the monitor had flaked on me.

ken
 
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