Philips LCD 42PFL5432D/37 - Bad PSU

[PlainBill]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Hey guys,

My Philips 48" t.v. went out Monday (3 days ago). I searched all over google for "my philips t.v. keeps turning off" and etc. And I found your great forums here. I did some searching through this thread. Through this one and other posts on your forums I was able to find all the information I needed. I'm a network technician, but know nothing about other electronics and how they work as far as t.v.'s and etc. go.

Through reading your forum posts: I was able to get my t.v. up and running via over-night shipping my new caps, and soldering them in place of the old ones... My t.v. works GREAT now!

I just wanted to visit this site and thank all of you guys for providing such an informative and helpful forum here. I ended up fixing my t.v. for $9.00! My t.v. is the same model/kind as the one here: 42PFL5432D/37. Seems like a common problem with this model. Everything else about this t.v. is great though, for it's price.

Again: thank you all for your informative posts!

Thanks for the kind words; there is only one problem. A 42PFL5432D/37 is a 42" TV, not 48".

PlainBill

[trixter]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

OMG. Didn't know this thread came back. Well last time I posted, no one said anything for a long time so I stopped coming back here. Looks like a lot more good info. Well my board is still in the same situation. Seems no one has been able to fix this chirping issue. Looks mostly like you guys have been trying to do this external power mod instead of fixing the real issue. I recived another power supply that was suppose to work, but when it is put in nothing happends. The red power light on the power button is flickering rapidly. Doesn't power on. Also this board doesn't chirp. I've swapped parts back and forth on each board, but they both get the same results. Not sure what to do now except keep changing parts.

[Dgtech]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Working on the same case. Just opened the tv and the caps on psu were buldging. Same values as the ones posted in first thread. Once caps A,B,C, and D come in, I'll solder them in and see results. The tv is now doing that chirping sound with no screen. I've fixed quit a few things in my time. Hopefully I'll add this on to the list.

I always like to think to go back to the original problem. The caps were found to be bulged. It's hard for me to beleive that there are two separate problems. There may be a problem caused by the first, sure. There was never a whole clear picture posted of the original board (top and bottom). This is the one where the diode was changed as well as the caps. If you can do so, we can work from there.

By the way, I think someone either shipped you the wrong replacement board or a non working board. You may be injecting another problem altogether into the set. Board swapping is ok as long as you know the other board works.

[momaka]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

There was never a whole clear picture posted of the original board (top and bottom).

Nuclear posted some decent pictures on page 2 (though I will admit they are a bit fragmented). These are the two posts:
https://www.badcaps.net/forum/showpo...5&postcount=31
https://www.badcaps.net/forum/showpo...4&postcount=38
and schematic can be found here:
https://www.badcaps.net/forum/showpo...6&postcount=71

Well my board is still in the same situation. Seems no one has been able to fix this chirping issue.

I just looked back at your previous posts in this thread. You said you have recapped the PSU, but what brand and series of capacitors did you use? Did you also replace the small caps?
Other than that, clear, well-focused pictures of your boards would be helpful. Sure we already do have pictures and a schematic from other members, but sometimes there may be slight differences in the PSUs.

[Dgtech]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

If I am looking for burn marks or some disfigured component, I dont see how nuclear's pics are gonna help me. That is, of course, unless Trixter bought the set from nuclear. Each person should post pics of their TV due to the many different revisions of each board, or tv.

Please post a picture of YOUR whole set opened up and one of each board inside.

[Lobo]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

If I am looking for burn marks or some disfigured component, I dont see how nuclear's pics are gonna help me. That is, of course, unless Trixter bought the set from nuclear. Each person should post pics of their TV due to the many different revisions of each board, or tv.

Please post a picture of YOUR whole set opened up and one of each board inside.

Will do. The replacement PSU I bought last year has already blown it's caps. The same Capxon caps as the original. When I get around to replacing it, I'll come back with pics.

It's pretty funny, last year when I started this thread, there was little info to be found on this "lemon" TV. Now, just this site alone has numerous posts about it's problems. Get the word out to friends and relatives to NOT buy this TV.

[PlainBill]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Will do. The replacement PSU I bought last year has already blown it's caps. The same Capxon caps as the original. When I get around to replacing it, I'll come back with pics.

It's pretty funny, last year when I started this thread, there was little info to be found on this "lemon" TV. Now, just this site alone has numerous posts about it's problems. Get the word out to friends and relatives to NOT buy this TV.

A little late for that. Philips last shipped the TV in October, 2008.

PlainBill

[erwhat]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I had the same issue with my 42" phillips. With the information found in this thread, I replaced the bulging caps and the 2 diodes (that were burned out), works perfectly now!
Thanks everybody!

[Tscott]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

I'm experiencing the same issue with my 42" and ordered the 4 caps that were needed. (3 of the original caps were bulged) Reassembled the unit and plugged it in. Red light came on solid.....flashed a few times and then just remained solid red and would not turn on any further. After dis-assembling again, found that the one 2200 cap had bulged already. Do these caps have a polarity that determines which direction they need to be installed? I should have payed attention better during install but it was family game night and my kids were telling me it's my turn.

Thanks!

[Dgtech]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

OOPS!!! Replace all of them again and pay attention to the markings on the board underneath. Sometimes it will be a circle with one half of it bolder than the other half indicating the negative side. Sometimes they will just print a negative sign on the board itself.

[momaka]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

According to the pics on page 1 and 2 of this thread, the negative side of each cap (the side marked with a stripe) should be aligned with the shaded semi-circle on the board.

[M1SCH1EFMAYHEM]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Happy New Years!!

I have been reading all the post and I also have this Television. When i plug in the power cord the red light blinks 6 times. When i opened up the cover everything looked fine. I did not see any burn marks or bulging caps.

This is the Board i have at.
http://assets.shopjimmy.com/media/ca...42724421_7.jpg

I am considering replacing the caps, but since they don't look like they are bulging should I?

Thank you

[bbjunkie]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Happy new year M1SCH1EFMAYHEM

To quote a regular here (retiredcaps) :

Capacitors (C designation on the PCB board) die from age, heat, and shoddy build quality. Capacitors DO NOT have to be visibly bloated in order to bad. They can be out of tolerance uF (a 1000uF measures 20uF) and/or have high ESR (ohm). A multimeter will be insufficient to test for ESR. For that you need an ESR tester which costs between $50 and $300.

It would probably be easier if you started a new thread with some photos first (at least a good quality well illuminated top down shot of the power supply board) preferably as close to 2000x2000 as possible.

Attach the photo with the "manage attachments" button which is below the submit reply button in the "Additional Options" box

If you have the facilities for measuring ESR and are confident in doing so, then by all means go ahead and check the caps.

Otherwise, post the photo and someone will be along to point you in the right direction

Jim

[patdude72]

Re: Philips LCD 42PFL5432D/37 - Bad PSU

Hi folks I am brand new to this forum and what brought me here is an issue with my 42 inch lcd phillips tv, 42PFL5432D/37 picture is out and it makes chirping sounds, i briefly looked at a few posts on this thread, and from what I gather it could be as simple as replacing some caps. I am wondering if it is as simple as that, or am I wasting my time, as I am about to start taking the tv apart. I would like to take a shot a fixing this tv myself any help or feedback would be appreciated

[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.

[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

[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

[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.

[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

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.