Killer Instinct 2 monitor help

[postmortem]

I have a Killer Instinct 2 arcade and when I set the position of the screen it stays, however sometimes when I turn the machine on I have to readjust the screen position. The top of the screen comes down half an inch or so and a lilttle to the right. What would cause the monitor not to remember the position? Its the original monitor that came with KI2. Its a wells gardner 7400 I think. Thanks

[postmortem]

Update... I turned off the machine and turned it back on 30 minutes later and it was back to being too low on the screen. this time instead of fixing it I jusdt played the game for 5 minutes and the picture corrected itself. I guess I have to let the monitor warm up or something. Is this the sign of a failing tube? is there any way to fix this so its perfect when you turn it on? would a cap kit help?

[lilshawn]

cap kit.

when caps are old... when cold, they are waaay out of spec... as they warm up the get closer to spec.

cap kit should fix it right up.

[MonMotha]

Try adjusting the vertical hold control.

[lilshawn]

Oh, and those pots... Are rated for about 200 cycles. If you often tweak the adjustment knobs, they may be getting worn out.