Philips 42PFP5532D - Dead

[unit22]

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

Ok, thanks selldoor. Lol yes of course it was plugged in and powered on!
Will have a bash over the weekend, thanks again for the help.

[martino]

Re: Philips 42PFP5532D - Dead

The circuit of D6003 and main filter caps only become active when the powerboard get's switched on by mainboard,till then there will be no power in that part of the board.
The standby circuit seems to be working as he has 12vstandby and 5.3 volt..
Am I correct that this is a samsung based TV? Could we get the board number of the power supply? PS-426********* ??

[unit22]

Re: Philips 42PFP5532D - Dead

Hi Martino, thanks for the help!

Yes, it is samsung on the inside, PSU is:
PS-426-PH LJ44-00143A 20061129 Rev.01

Cheers

[martino]

Re: Philips 42PFP5532D - Dead

can't find a schematic for this thing
Can you post a upclose picture of the plug that goes to the main board? top side and also bottom side of board? So we can clearly see the printings beside that plug?
I would like to figure out how to force the powerboard on without the mainboard.
I gotta say,it's always scary to work on a board where someone before you did a butcher job on it,you never know what all he shorted out in a attempt to repair it...
If we can figure out how to force the psu on ,then we can see if you get the VS and VA etc...

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks Martino,

Sounds like a good plan!

Ok here are some photos, thanks

(btw, you probably already know this, but only connectors CN8009 + CN8010 are connected in this tv, the other 5 above are not connected to anything). thanks

[martino]

Re: Philips 42PFP5532D - Dead

Hmmm...need some help with this one,can't figure out what the power on pin would be
was thinking 5vswitch and 5v standby,but seeing in your first post that you have voltage on both,wouldn't be a good idea to bridge those lol...
Hopefully somebody will chime in that's familiar with these...

[selldoor]

Re: Philips 42PFP5532D - Dead

Well as indicated earlier I am well out of my depth with this one but this is probably the SM.
might help

[unit22]

Re: Philips 42PFP5532D - Dead

Hmmm...need some help with this one,can't figure out what the power on pin would be
was thinking 5vswitch and 5v standby,but seeing in your first post that you have voltage on both,wouldn't be a good idea to bridge those lol...
Hopefully somebody will chime in that's familiar with these...

At this point in time I am willing to try anything to get some life into it lol But yeh I don't want to do any further damage.

I have tried probing various + - points and I'm getting voltages in some areas, but to be honest I don't know what im looking for without guidance.

Thanks for the help

[selldoor]

Re: Philips 42PFP5532D - Dead

OK - isee the long list of voltages early on but perhaps you do do them again by connector. At least on the 8pin 1P11. and give the pin description.
If you load up the pdf and open it in adobe reader you can search it by clicking on the binocular icon and type 1P11.

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks selldoor, ok I re tested the voltage:

CN8006 (SY)
Vg...0.00V
Vs...2.00v
Vs...2.00v


CN8007(SX)
Vg...0.00v
Vs...2.00v
Vs...2.00v

CN8009 (1C01)
5Vsw...5.35v
5vsw...5.35V
5Vstb...5.29V
VSND_POS...-0.00V

CN8010 (1P11)
12Vssb...12.62V
standby...0.08V
POWER_OK...0.12V

CN8002 (LOGIC)
Vs_on...0.00V
Relay_sig...0.00V
D5V...0.00V
D5V...0.00V
D5V...0.00V

The above results are with the board out of the TV... Thanks

[unit22]

Re: Philips 42PFP5532D - Dead

Forgot to do:
CN8005 (Buffer)
Va...0.32v
d5v...0.00v

[Alastair E]

Re: Philips 42PFP5532D - Dead

Most supplies will be 0 with the board Out of the set....

The Mainboard makes the PSU turn on to derive the other supplies such as Va Vs etc....

[martino]

Re: Philips 42PFP5532D - Dead

Yes, we want to find out how to force the psu on without mainboard( to detect if fault is on psu or mainboard). Any ideas? I'm not familiar with this psu ( or any Phillips psu)

[Alastair E]

Re: Philips 42PFP5532D - Dead

As far as I recall--Its I2C bus controlled, as are all the voltages it produces--You'll not get it to fire up outside the set.

Typical Bloody Philips! More trouble than they worth!

[martino]

Re: Philips 42PFP5532D - Dead

Lovely. Ugh. How could one see that signal? Scope?

[unit22]

Re: Philips 42PFP5532D - Dead

Thanks for the help!!!!

I'm a Swansea jack too Alastair

[unit22]

Re: Philips 42PFP5532D - Dead

Hi
I put the board back in, Any ideas on what to do next? Would it be worth changing every cap on PSU? Thanks

[Alastair E]

Re: Philips 42PFP5532D - Dead

I would start looking for shorts on Y-SUS/X-SUS....

But--Wouldn't waste time on it--They ALWAYS have HORRIBLE pictures, with an odd grainyness--especially of edges etc....

Thats the trouble with those sets--Chicken or egg. Only 'easy' way is to start changing boards--for KNOWN good ones from a working set--Thats what Philips/Hitachi do/did when they were serviced....

[unit22]

Re: Philips 42PFP5532D - Dead

Hi,

Ok I'll check for shorts then, I know your right its a big and heavy TV, a bit outdated I know! But I am willing to try and fix it, just to learn.

So basically I need to check continuity on every component on the X/Y boards?
Thanks

[Showdem]

Re: Philips 42PFP5532D - Dead

Did you try to fix it or did you discover a fault unfixable ? Because I got a similar issue was wondering if anyone would try to help me. The PSU only shows a green light not flashing and it only clicks once but no picture or sound seems to be dead any solution ??