I have an older Philips TV, model no. 47PFL5432D/37. When the power is turned on it takes a couple seconds then I here a "click" & the screen flashes then goes black but I get sound.

Gareth Cockram

• 661 Answers
• Posted on Sep 27, 2007

SOURCE: no picture just comes sound

sounds like the Backlight has failed, if you look closely at the screen you should be able to see the image changing, but as there is no back light there is no luminescense so it will appear black or grey, It is probably the backlight inverter or element that has failed, if this is within warrany organise with them to fix it for free,

SOURCE: Red light flashing

ctf1800,

I would love to have that service manual. My Philips 37PF7320A died 4 days ago with the typical 1-4 blinking lights. The fuses are fine but I found a 100 ohm 1/4 w resistor that was dead and replaced it, but no change. Now I have looked closer at the "dead" resistor and after the brown-black-brown and there is a poorly applied green band before the gold one, so I'm not sure what I have. I guess I need to get a high resistance tester off eBay.
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SOURCE: Philips 42PF7220A/37 Red Light blinks 5 times in a row

After a lot of research, I have been able to locate the part which in my Philips 42PF7220A/37 Plasma TV appears to be the problem. I found out that heating and cooling certain parts of the board(s) allowed me to get beyond the 5 flashes error message and power up the TV. Through a process of elimination, I narrowed it down to the SSB Tuner board 3104-313-60376, This board is located behind the board covered with the shield. The specific component in question is the one I have circled in red on the attached photo. It is a crystal Xtal 27 mHZ 18Pf PART# 2422-543-01397. When I spray this component with cold air (freeeze) for a couple of seconds and then plug the power back in the TV will go through it's initialization cycle and turn on. It may turn off automatically, in which case, you just power it back on either manually or with the remote. It has now been 7 days, and it hasn't failed since. I have NOT replaced the part, if it fails again, that will be my next step. The part is about $ 10.00. The entire card can be purchased for about $ 100.-
I am reluctant to do anything further, because I'm not positive that the component is the problem or possibly the input to it. What I do understand is that a crystal can be excited (turned on) by either heat or cold. Perhaps it was stuck and spraying it with cold and heat released it. In any event, the TV is working for now. Hopefully it will stay this way.
If anyone can shed some light on why this may have happened, I would appreciate it.

SOURCE: Philips 50 Inch Plasma Model 50PF7320A/37 will not turn on

Commonly it's going to be a power supply related problem. The two boards that need to be looked at is the Main Power Supply Board or the power supply board for the screen. The one that powers the screen, some manufactures call it a Backlight Inverter Board.
If you have some electronic experience, you can sometimes find a Service Manual for the TV over the internet for less than $20. It will have the all resource material for repairing your TV model. It's just the matter of replacing the bad part on the circuit board.

SOURCE: Hi, I have a Philips model 37PF7321d/37, 37 inch

The power board numbers you need to search for on eBay is 310432847531 or 310432838621 - they are compatible according to Philips.