Philips LCD 42PFL5432D/37 - Bad PSU

[cccamgeek]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Drear sirs
can aby one help for a eeprom dump for this tv please :
PHILIPS 42PFL9603D/10
best tegds

[Shane711]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I have this TV Philips 42PFL5432D/37 and someone had worked on it before me so they kinda messed it all for me. I am having a problem with the power supply. It is doing that chirping and I can not get it to stop. Does anyone know the proper values for ZD902, 904, 906, 908? I found a P6KE120A and a P6KE350A removed from the board and seems they were missing from ZD902 & 904 but the diagram I found says both ZD902 & 904 are P6KE120A. I found a P4KE250A in ZD906 and I assume that is correct. Cap 947 was reading 2uf instead of 6.8uf so I changed that but I still have the chirping. Power supply board is 715T2432-2. Thank you

[thomasw]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Forgot to insert the pictures of psu and motherboard

[thomasw]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I just picked up an 42PFL9603D(/10) from a buddy that said it didnt turn on and didnt want to spend time fixing it.

I'm not very technically inclined, but I can something and want to learn more. I have turned away back cover and started troubleshooting. Can not see any obvious errors, but I have discovered a few things.

There is a buzzing sound when I plug the power cord in, not very high but just so you can hear it.

There are NO signs of life in the standby LED. Completely dead.

If I remove the cable that goes from "standby led board" to the motherboard, illuminates a green LED on the back (of the motherboard). If I plug that cable back again, the same green LED turns off again.

Is it bad caps as many suggest, or do I have to troubleshoot some more first? Could someone please point out which ones I have to replace?

I dont have a multimeter by hand right now, and if you guys mean its something else than bad caps that causes this error, I will just trash it..

[budman67]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I just by luck had the flashing screen upon power up, and thought it was the ps caps again.....thing is that I fixed it for this nice older lady who cuts my hair....less than a year ago, and I thought......no way when I put in pannys instead of crapicon.......just for s**ts and grins....I took off the lid of the main digital, and OMG.....3 more crapicons.....split like the do........will replace here in a minute and let you know my findings.....no one is going to tell ssg Kelly that he cant fix it.......stay safe!!!

[Globulus]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Hi All,

New to the forum, but not forums. I am well versed in comp hardware, but not so much in TVS. I have the Phillips 42PFL5432D/37. Like others here, it started chirping and my screen went black The warranty is of course expired, so my DH put it in the room under the stairs. I started researching and found it was the power supply. I have confidence that I can replace either the caps or the whole unit. The problem is that this behemomth is lying face own on my counter (It is granite and 8' long by 4' wide, so while it is taking up a lot of room, it is not taking it all.) on top of a doubled blanket to protect the screen, and I cannot figure out how to get the back off. There are standard phillips heads screws holdingit on, but also some kind of screws that I have never seen before. They are not phillips, allen, star, or flat. Someone help me figure out how to get this danged thing apart, please? I cannot have it sitting there much longer. Frustration is becoming the norm with a TV that I had loved before the PSU went out. Thanks in advance,

Angel

I have a Philips 42PFL9603D. Not the same model. A year newer but the same brand.

I took the back off using just a T10 (Torx) screwdriver. Pretty common.

You might want to Google the chassis number to locate the service manual before you take it apart. Don't want to remove too many screws.

http://english.electronica-pt.com/el...p?find=TPM2.0U LA

Download link:
http://www.electronica-pt.com/index....tdown/id,7891/

Pictures at the beginning of the service manual show how to take it apart.

[jetadm123]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Possibly one of these? Photos of the screw head would help

[hypnoangel]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Hi All,

New to the forum, but not forums. I am well versed in comp hardware, but not so much in TVS. I have the Phillips 42PFL5432D/37. Like others here, it started chirping and my screen went black The warranty is of course expired, so my DH put it in the room under the stairs. I started researching and found it was the power supply. I have confidence that I can replace either the caps or the whole unit. The problem is that this behemomth is lying face own on my counter (It is granite and 8' long by 4' wide, so while it is taking up a lot of room, it is not taking it all.) on top of a doubled blanket to protect the screen, and I cannot figure out how to get the back off. There are standard phillips heads screws holdingit on, but also some kind of screws that I have never seen before. They are not phillips, allen, star, or flat. Someone help me figure out how to get this danged thing apart, please? I cannot have it sitting there much longer. Frustration is becoming the norm with a TV that I had loved before the PSU went out. Thanks in advance,

Angel

[kevinm34232]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I had this model before, made noise when turned on, was 4 bad caps and ZD906.

[PredictaTV]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I put the parts on the other board, which was dead. It makes the rd lite come on, then if you push the red lite button on front of tv, the green on comes on. But no screen light. The "chirping is not on that board, though. What I guess I have to do is recheck ALL the diodes, transistors, again. Bed time now. Ill pick you all up tomorrow. THANKS so far.
ROSS

[philliesfan30m]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

i have a philips 42pfl5432d/37 tv and just fixed mine which is the same board. mine made a hissing sound but mine was d912 that was causing it to do that after i replaced it then it was fine. i'd check zd906 and see what u get

[philliesfan30m]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

did u check zd906?

[PredictaTV]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Oh yes, I replaced zd904 and 902also c958 with a 47uF @ 50v
Got me bugged!!!! Have been swapping parts back and forth between TWO duplicate PSU's.

[philliesfan30m]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

but you replaced that 1 by the transformer i didn't see the pic you had attached.

[philliesfan30m]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

zd906 is right by that transformer and which 47uf did you replace or did you replace both of them? c958 is also by that transformer.

[philliesfan30m]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

did you check zd906 i have heard they go bad quite often?

[philliesfan30m]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

did it make a chirping noise or a hissing noise? i'm no expert but i will try to help.

[PredictaTV]

Re: Magnavox LCD 47MF437B/37 Bad PSU

http://www.wadictatv.com/Magnavox%20...715T2454-2.jpg = Open up in separate window and compare:

The magnavox 47MF437B/37 uses the same power supply as the above Philips unit, or, they share the same TRANSFORMER #80TL37T912 LS. Which is "chirping." Here is my problem. And here is my question.
= Should I salvage a duplicate transformer off another unit of same value and replace this one that is chirping? Seems to be the last resort, short of buying another PSU at $75.00 +++

MAGNAVOX 47" LCD Model 47MF437B/37
POWER SUPPLY: 715T2454-2
A. Transistor? P7Nk80ZFP works fine
B. Transformer: 80TL37T912 LS = "chirping" Noise.
At one time worked fine: NOT REPLACED YET
C. 1500uF 35v replaced
D. 2200 uF 35v replaced
E. double diode / checked = good
F. 2200uF 16v replaced with same at 35v
G. 47uF 25v replaced with 50v

Sold and worked fine, until it went dead.
Customer says it did this:
1. Work fine until one day:
2. Turned on workeds until turned off, then when turn back on, would not come on.
3. Next day turned on fine, the worked a bit, shut off.
4. rest cool off. Later turned on, worked the n shut off.
5. Finally would not turn on. When he would try, it would start and begin makiing the chirping noise and eventually stopped turning on.
6. He heard small "chirping" inside next to power supply. I used small very long 12" metal screw driver with plastic handle as old time hear-in-aid up to ear. YEP, transformer was the loudest chirping componant.

I opened it up. Found bulging "F" capacitor. replaced it with 2200uF 35v.
Replaced and pluged in and still same chirping.
Replaced "G" cap, -= same chirping.
CHIRPING comes from "B" Transformer.

So, I figure it is a bad Transformer?
ANYONME have any idea?
ROSS

[C-los_530]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Same problem with my tv. Any help? Doesnt turn on and no stanby light. Caps look good but im not sure if they work

[Rliebnosr]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Thank you for this thread. My Philips 42" (42PFL5432D/37) would shut off into standby (red power button) after a few seconds. I recapped the power supply with the 3 1500uf and 1 2200uf cap from Mouser and it's up and working again! It appeared that only the 2200uf cap was bulged but all have been replaced with the Panasonic caps.

The caps used were as follows.
1500uf Panasonic PN: EEU-FM1V152L
2200uf Panasonic PN: EEU-FM1C222

Hope this helps out the next guy.