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Crumbtrail TV Forums: TV Equipment: Projection TV Forum:
Phillips Projection TV chirping noise

 

 


rolaed
New User

Feb 23, 2012, 5:07 PM

Post #1 of 6 (3667 views)
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Phillips Projection TV chirping noise Can't Post

Hi:

My 52" projection TV is making a chirping noise with no picture/sound. Last year, I replaced the convergence chips but they were from china, not Sanyo ones. I removed connector 1516 to isolate the power board from the convergence board and the chirping goes away. With connector 1516 removed, all 3 lamps (green, blue, red) light up for a few seconds and then go off.

Does this mean that the chips are bad? I thought the lamps would stay on indefinitely? Could there be a short or bad component in the power board? ANy help is appreciated. Thanks



jts1957
Veteran


Feb 23, 2012, 6:22 PM

Post #2 of 6 (3663 views)
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Re: [rolaed] Phillips Projection TV chirping noise [In reply to] Can't Post

WHICH "Phillips" 52" projection TV?

Although I think you've pretty much answered your own question.Unimpressed


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Location: Far, Far Away


rolaed
New User

Feb 24, 2012, 1:23 AM

Post #3 of 6 (3657 views)
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Re: [jts1957] Phillips Projection TV chirping noise [In reply to] Can't Post


In Reply To
WHICH "Phillips" 52" projection TV?

Although I think you've pretty much answered your own question.Unimpressed


It is 51PP9100D/37


jts1957
Veteran


Feb 24, 2012, 2:17 AM

Post #4 of 6 (3654 views)
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Re: [rolaed] Phillips Projection TV chirping noise [In reply to] Can't Post

Shutdown with chirping sound.

These have almost all been bad IC's. Change the chips for Famous Maker. Use sufficient heat sink compound. Always check bias voltages.

Look at CRT faces for full size pix for the couple of seconds you say its on. That would be a 51" set btw.Wink


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Location: Far, Far Away

(This post was edited by jts1957 on Feb 24, 2012, 2:18 AM)


rolaed
New User

Feb 24, 2012, 3:24 AM

Post #5 of 6 (3650 views)
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Re: [jts1957] Phillips Projection TV chirping noise [In reply to] Can't Post

Thanks for the response. I do get a full pic when TV turns on for few seconds. Is it normal for it to turn off if connection to convergence board is disconnected?


jts1957
Veteran


Feb 24, 2012, 4:38 AM

Post #6 of 6 (3649 views)
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Re: [rolaed] Phillips Projection TV chirping noise [In reply to] Can't Post

Sorry. I don't recall. So many sets - so little time.Smile


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Location: Far, Far Away

 
 
 


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