tv lcd Philips 42pfl9632d/10 Power board ko

[budm]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

See my edited post 98.

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

SSB PS.
It should have +12VS which is used to turn on the switched power MOSFET 7B06 to provided the +5V.
You need to be able to read the diagram otherwise we will be spending days explaining as how to test what to test.
More likely right now the drive circuit in the primary side of the SSB power supply is not working.
You should have about 330VDC on the main filter caps 2B31, 2B50.

on the 2b31 cap i have 310 DC

[budm]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

OK, you do have DCV to run the primary driver circuit.
You need to check those diodes I circle in the PDF. 6B05, 6B06, 6B07, 6B08
Do you have the 12VDC at 1P11 connector?
I would also check those two resistors (2M2 Ohms) 3B60, 3B34.

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

OK, you do have DCV to run the primary driver circuit.
You need to check those diodes I circle in the PDF. 6B05, 6B06, 6B07, 6B08
Do you have the 12VDC at 1P11 connector?
I would also check those two resistors (2M2 Ohms) 3B60, 3B34.

6b05 is good
6b06 i think that is bad

i didn't find 6b07 and 6b08

the two resistor... 3b60 is a 155, and is good
3b64 is a 0 ohm resistor

[vinceroger69]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

6b05 is good
6b06 i think that is bad

i didn't find 6b07 and 6b08

the two resistor... 3b60 is a 155, and is good
3b64 is a 0 ohm resistor

what readings are you getting on the two diodes 6bo5 6b06? in diode mode on your meter test across each diode take reading then reverse the probes and take the reading again.This is with the tv unplugged of course.
if you get a clean dry paint brush etc give the area a good clean and dust of etc if you can try to take a good clear picture i can try to point the part to test out too you.

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

what readings are you getting on the two diodes 6bo5 6b06? in diode mode on your meter test across each diode take reading then reverse the probes and take the reading again.This is with the tv unplugged of course.
if you get a clean dry paint brush etc give the area a good clean and dust of etc if you can try to take a good clear picture i can try to point the part to test out too you.

i make an error in last post, 6b05 is bad, haven't reading in each side.
60b06 is good, in diode mode, 400 reading and no reading when i invert the probes

[vinceroger69]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

ok clean the board and have a search for the other diodes budm mentioned the board printing is probably hid under the dirt/dust etc.

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

I found the other two, are difficult to testing for the position, anD i don't want to disoldering before the time.
I ordered the 6b05 and this two.. When arrive i replace them.

For you can resolve the problem?

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

Today arrive the diodes, i changed the 6b05 and the tv work perfectly...

Thanks to everybody for the help, budm you are a genius

[budm]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

Thanks for the follow-up, I am glad it is just bad diode in the stby power supply, and I guess the power MOSFET on the mian power supply board were not shorted after all otherwise the main fuse would have blown.

109 posts, whew!
You worn me out on this one.

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

Terrible news... There is another problem...
The tv work ed fine for 2 days... Without any kind of problem... I see a lot of film, anD yesterday i gamed with ps4 (hdmi) for around 4 hours... Today begin another problem, i turned it on with hdmi, and it start to restart by self... It stai on for some second anD turned off automatically... Now i try to see Normal tv and the problem isn't present! I think that there is a ghost inside this tv

[vinceroger69]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

To clarify the tv still works in normal tv mode ok?
but with a hdmi source you have issues and it turns off?

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

To clarify the tv still works in normal tv mode ok?
but with a hdmi source you have issues and it turns off?

Unfortunately i must tell that doesn't work in Normal and with external sources... In Normal mode the problem is less frequently

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

Any suggestion for this new problem?

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

UPDATE:
I try to update the firmware tv, but didn't solved the problem.

After some test, THE situation is this:

If i turni in the tv in Normal mode, i haven't any problem, THE tv stai in for hours.

If i turn the tv anD use an hdmi device the tv after minute a (randomly, without a specific timing) the tv beginnig to shut off and in by it self... I can se the monitor black, the led stay blue, relay click and the tv turn on... This in loop...

Sometimes i can see the relay click more time before the tv turn in...

Can will be an heating problem?

[vinceroger69]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

probably a mainboard fault which can be hard to find whats the mainboard number?

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

probably a mainboard fault which can be hard to find whats the mainboard number?

The mainboard code is: 310432853602

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

after testing and retesting
now TV does not turn on , the relay does not click, and the blue LED TV has become purple , completely black screen

[CapLeaker]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

now you have to check the PSon pin on the power supply while turning on the TV. If you don't get a PSon voltage (comes from the main board), well then you need a new main board.

[Bibu]

Re: tv lcd Philips 42pfl9632d/10 Power board ko

Today i check it.
But purple led what does it meaning? Is a protection mode?