Space Invaders Deluxe - Vertical Hold Issue

Constellation

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Hello! I just got this new-to-me SiD and it has vertical hold! I played with the pots for hold, but no effect. This would lead me to believe perhaps a voltage regulator or something else, but honestly - I am still 'green' when it comes to repairing these. I can't find a 'what's what' on the monitor PCB so I am really struggling here!

Please help!

p4MQFhal.jpg
 
It's not a v-hold issue.

The vertical deflection of your monitor chassis has died.

Check voltages at the vertical driver section if they are present.

Which chassis is inside?

BEWARE! There are quiet high voltages around the FBT!
 
Last edited:
either what SamWhiskey said or it's also plausible that the yoke wires aren't connected properly. whoever had it last or during transport one of the vertical wires could have fallen off. the yoke wiring is quick disconnects you plug into the yoke. they should also be color coded as little dots to signify which wire goes to which terminal.
 
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