Philips 55PP9352 Rear Projection, no picture or sound, chirping.
I have read several posts about a similar issue reported from other people. When the power button is pressed the red indicator light comes on and there is a chirping sound coming from the back. I have read some of the ideas on what could cause this, specifically the horizontal output transistor or Flyback. I have done searching but what I need to know is, what do these parts look like? Where would they be located, on which board? How do I test them? I can certainly replace them but I need help on the identification.
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when yellow led....push the "P-" button about 5 times then push the left hand square button (looks like square with arrow pointing right) several times until it cycles to the input device.... order is ext1, ext2, ext3, front input, TV....
FBT is on power suplly deflection board it has 2 wires coming from it one goes to high voltage trippler box the other 1 goes to screen control box Hori out put is next to FBT 3 legg transistor on aluim heat sink Base to emitter will read short has internal Diode if it reads short on base to collector then hori output is Bad. Call Mats for Parts they will send you a catolog if you ask them too! 1-800-628-1118 Let me know if you need any more 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.