Philips 42PFP5532D - Dead

[unit22]

Hi all, wondering if anyone can help me out, I've just salvaged this TV and trying to get it working again.

I have blue light on front, but no video at all.

The green LED on PSU is not blinking, so no fault codes.

These are my PSU readings:
VG...-0.01
VS...1.58
12Val...0.00
VSND_NEG...0.23
gnd_snd...0.00
vsnd_pos...2.26
POWER_OK...0.12
standby... 0.06
12vssb...12.61
dc_prot...0.00
5vsw...5.34
gnd_ssp...0.00
8v6...0.08
5vstb...5.29
relay_sig...0.00
VS-ON... 0.00
d5v...0.26
Va...0.50

I have no idea what these voltages should be.... I have also tested all the removable fuses, inlcluding the small F2001 fuse... Any help please?

[Hamie]

Re: Philips 42PFP5532D - Dead

With the x and y sus unplugged what are the vs and va voltages?

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks Hamie,
with the X and Y unplugged...
vs...3.54
va... 0.51

[unit22]

Re: Philips 42PFP5532D - Dead

Hi

Some news... Looks like someone has had a go at fixing it before me, I just pulled one of the capacitors off by hand as it wasn't soldered very well.

I was a bit suspicous about these 2 caps as they didn't look right sticking up like that And the insulation tape

So I need to replace these caps, these EPCOS are 220uF 450V, does anyone know if these are the correct ones to replace with?

Thanks

[Hamie]

Re: Philips 42PFP5532D - Dead

lol wtf? are they sitting on top of the heatsink!?
Are the pads damaged? Take a photo of the underside of the board.

[selldoor]

Re: Philips 42PFP5532D - Dead

Hi Well they dont look good but having said that they would not stop it working if they were firmly soldered in. In fact you might consider just refitting them until you have the rest working as they will be expensive to buy.

Just in case you are wondering whilst the wrong physical size they are the correct
rating 450v 220uf - see pic

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks both for the help

Hamie, yes they were above the heatsink, as selldoor mentioned they are too big, so they improvised on the previous repair. I will take board off tomorrow and inspect the pads.

Thanks selldoor, how do I know if they are working though?

And thanks for the confirmation of the caps! :-)

[selldoor]

Re: Philips 42PFP5532D - Dead

Solder them back in - use heatshrink or insulation pulled off a mains power cable instead of tape - leave a small gap at the top of each leg and test them.

Meter on 600vdc - you would need to be careful not to touch the heatsink or anything else in that area - If you can get to the bottom of the board test them
there on the solder joints - probably safer option..

EDit - Id guess they are working as you have some voltages on the secondary side.

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks selldoor, appreciate the help!

Ok, I'll solder them back on tomorrow, I have some heatshrink so I'll use that.
No problem with testing, I got crocodile clips on the DMM so its a safer than going in with the probes.

I'll post the results soon! Thanks Again for the help :-)

[selldoor]

Re: Philips 42PFP5532D - Dead

Make sure you get them the right way round - white/paleblue stripe is on Neg side.

If they end up touching the heatsinks / or might touch put tape back on.

[selldoor]

Re: Philips 42PFP5532D - Dead

If you have looked at other posts and on the net some sets have problems with a pic
that as far as i can tell has not been bottomed- just so you dont put a lot of money into it
and end up with that.

[unit22]

Re: Philips 42PFP5532D - Dead

Hi, Thanks for the help, I've just soldered on the 450v 220uF Caps, I tested them with the DMM and I'm getting 0.00 on both of them.

I will test all caps later and post some readings here. Thanks

[selldoor]

Re: Philips 42PFP5532D - Dead

Hi, Thanks for the help, I've just soldered on the 450v 220uF Caps, I tested them with the DMM and I'm getting 0.00 on both of them.

I will test all caps later and post some readings here. Thanks

volts ohms amps???? If volts and the board is switched on no point in tetsing any other caps yet

[unit22]

Re: Philips 42PFP5532D - Dead

Sorry, no voltage at all from them, thanks

I've double checked them, again 00.0V from both, I guess I need to order new 450v 220uF caps then

[selldoor]

Re: Philips 42PFP5532D - Dead

Hmm Odd one that - can we have a good clear picture of the bottom of the board

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks selldoor, heres the bottom of the board.

I forgot to say that the previous owner also replaced:
25v 2200uF Cap (C8023) right mid on board - I have resoldered this one as solder was bad.
250v 820uF Cap (C8061) right top on board - Not resoldered as it looked ok.

Thank you

[selldoor]

Re: Philips 42PFP5532D - Dead

Too complicated for me - I dont like it when you cant see what is on the board
for heatsinks. (not that it would help much if I could see)

Its got to be a bit odd that there is NO voltage on the caps when you have some low voltages - must be a dual supply but cant see the other rectifier.

So caps have no voltage because:
1 The bridge rectifier is out? can you see if that is it at D6003 left side
halfway down. - If it is can you test the voltage on the the outer pins
(meter on vDC600) Inside pins should be AC 230v.

2 The traces the caps are soldered to were not cleaned down to shiny metal.

If this gets fixed I would resolder that other big cap

[Hamie]

Re: Philips 42PFP5532D - Dead

C5053 looks like the pad has been lifted.

[unit22]

Re: Philips 42PFP5532D - Dead

Too complicated for me - I dont like it when you cant see what is on the board
for heatsinks. (not that it would help much if I could see)

Its got to be a bit odd that there is NO voltage on the caps when you have some low voltages - must be a dual supply but cant see the other rectifier.

So caps have no voltage because:
1 The bridge rectifier is out? can you see if that is it at D6003 left side
halfway down. - If it is can you test the voltage on the the outer pins
(meter on vDC600) Inside pins should be AC 230v.

2 The traces the caps are soldered to were not cleaned down to shiny metal.

If this gets fixed I would resolder that other big cap

Thanks selldoor, I have tested the bridge rectifier, I am getting 00.4v on the inner pins, and 00.0 outer pins. So I guess that is dead too. (the bridge rectifier was D8003)

I am pretty sure they are soldered on well, I have done a continuity test as the pic illustrates, all seem to be connected.

Thanks Hamie, so there are supposed to be pads underneath board?

Cheers all

[selldoor]

Re: Philips 42PFP5532D - Dead

Bridge may not be dead ehheheh may use those caps yet.
I have to ask you did have it plugged in and powered on?

Need to trace back the two middle pins to the mains input
Shouldnt be too much in the way some coils perhaps L????

I have to go out now but back later