Asteroids Deluxe monitor issue

7146aaron

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This is a repost. I forgot there was a seperate section for monitors now.

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I just got an asteroids Deluxe that was DOA.

1.I replaced all the fuses. there were several blown.
That made the coin door lights come on.

2. Reflowed headder pins on deflection PCB. That gave me neck glow from the heater and the spot killer came on.

3. Reseated all the socketed chips on the game PCB, Cleaned the edge connector and now it plays blind and the spot killer is off. I have X Y outputs that are within range.

4. Turned the brightness up and nothing. Including no chatter.

I know I have a HV failure but not sure where to start with that. Any suggestions?
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It is the 2000 monitor not the 802.
 
You may have a bad HV diode. It is inline with the anode wire to the tube. Common problem it seems. Bob Roberts has them.

Otherwise, check the caps and transistors on it...
 
Diode

Well Mod. You are right again. I forgot about those things. Now I remember how many times I have read that they fail. The Diode will not pass current in either direction. Thanks, Aaron
 
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