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Philips PTV 915 mod 50p8341a, powers on, but no video or audio or osd, can raise Beam current and achieve a REd or G,B rater. HV and filaments glow and ok. when turned off pix appears and then off as per the commnand. Changed the daughter PCB on signal PCB, upright pcb on eft rear of ssb and same result. Not the Daughter PCB, generally this PCB will exibit a no power on problem. Question, is it the AKB or Kine bias votage or one of the CRT's, generally the BLUE

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Hi,

Loss of picture n sound can be from many things. In your case, since you heard a high pitch squeal, it is almost always related to a bad flyback transformer. They can develop intermittent conditions before they finally go.

Therefore, I am confident that you can get the flyback fixed by a local shop for under $100. At least, I suggest you call around, giving them your symptoms like you did here and get their opinion.

It is new enough that there should be no question about the value of getting it fixed.

All the best and let me know if you have further thoughts or comments for me.
Goodluck,
Dont forget to rate me as fixya..

Posted on Jan 28, 2008

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Posted on Jan 02, 2017

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