Question about Philips 55PP9352 55" Projection Television

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Red power light on. chirping beeping sound

My magnavox dptv310/philips 55pp9352-17 is having problems. power light is red and thier is a chirping/beeping sound. i researched and i was told to order a kit that has two new chips and 12 resistors in it. i just recieved it and soldered everything in. when i powered up it still does the same thing. any ideas what else it might me. thanks for your help.
mike

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Hello sedekim,

First check you connections to the circuit board some times the connections go bad from the deflection board to the signal board, if this is not the case the bottom advice may be of help.

That problem indicates that the Horizontal Output Transistor (HOT)is beginning to malfunction. I would suggest that if you have a background in electronics that you do the following:

1) unplug and open the back of the set

2) look for the HOT and locate the Collector, Base and Emitter of the transistor and using your multimeter set to read resistance measure from the collector to the ground, it should read high almost infinite, red from base to ground it should read low and from emitter to ground it should read low.

3) if the HOT when read from the collector to ground reads low then you can bet that the HOT has a short circuit from collector to ground, and will have to be replaced.

4) In addition I would also perform a ring test on the Integrated High Voltage Transformer (IHVT).

This will tell you if the IHVT has suffered any damage from the HOT malfunctioning. You may end up having to replace both of the components.

If you do not have a background in electronics I would suggest that you take the TV to your local TV repair facility.

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Posted on Feb 20, 2009

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What is the chassis number on that set. We have a complete Chassis that we are parting out HDTV magnavox with the DPTV 305 through 345 which should be the same chassis as your set. We sell used parts this is a working tv with a cracked blue tube were selling it as a complete chassis or individual boards on our site. Let me know if you may be interested. Chirping comes from the deflection circuits possibly flyback related.

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