RCA CTC177 chassis

[rockitroll]

unit works fine until warm then screen gets too bright with retrace lines
.... can turn down screen voltage all the way but when its cold then its too
dark ...repair tips say c5002 , and c5004 on crt board .... tuner grounds
have been done before , still holding ... any help would be awesome , thanks
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[rockitroll]

got it , the q5004 video buffer transistor on the crt board was leaking ...
caps were fine per esr meter

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[Jim Lazzaro]

It is probably a faulty diode or transistor; your best thing to try is
when the unit is warm just freeze spray small sections on the board
and you should be able to see the change you mentioned. Narrow your
search with the spraying and you should be able to pinpoint the
culprit. good luck.
Jim