20EZ out of focus for a few minutes - then looks great! What's the deal?

blkdog7

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20EZ out of focus for a few minutes - then looks great! What's the deal?

My DK Jr. has a freshly capped 20EZ and the monitor is out of focus during the first few minutes after I turn it on then it looks great. My other 20EZs do not do this. It's very odd. The machine is in my garage right now and the humidity is high. Could that be effecting it? What should I do?
 
Possible bad tube pin / intermittent pin. sometimes a bad neckboard socket will be the culprit. maybe frayed wiring on the focuse / screen block.. however i have never seen a bad focus / screen block for the flyback. good luck!
 
John,
Check the focus wire at both ends to make sure that it has good connectivity. I am betting that the end that goes into the neck socket will probably need to be resoldered.
 
Thanks, guys, I'll take a peak back there. It's just odd that the monitor looks fantastic after a few minutes.
 
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