PHILIPS 32PF5420710 not power on

[Nawual]

This TV does not turn on even in stand bye.Does nothing.It is the Philips model 32pf5420 / 10 chassis with lc4.3e aa.As a power supply brings the model PLCD 190 P1 23171 and I have not found the scheme to be able to measure the voltages that come out to the main board. One help please.

[WildPuppy]

Re: PHILIPS 32PF5420710 not power on

Maybe I don't understand the problem correctly but from what I make of your post, the TV does not even make it to StandBy mode, ie. no LED lights up, nothing. Am I right?

If yes, did you check the very obvious fuse?
(the one in the circle)

[Nawual]

Re: PHILIPS 32PF5420710 not power on

Hi,yes, you right-No led lights up and the first things,it´s check the current cable and that fuse.It´s works.

[budm]

Re: PHILIPS 32PF5420710 not power on

So do you have any DC Voltage on the connector that goes to the main board? All 0V?

[Nawual]

Re: PHILIPS 32PF5420710 not power on

My problem is that I do not know what voltages and which wires from the connector that goes to the main board have to carry them.

In other occasions you have the tensions and the name of each cable painting on the board, this time it has nothing and I can not find the scheme of the power supply.

[budm]

Re: PHILIPS 32PF5420710 not power on

Right now we just need to know if there are any DC Voltages at all at the connector, so please just report what each pin has, that is what I will do if I have the board in front of me.
BTW, sometime they print pin names on the bottom side of the board.

[budm]

Re: PHILIPS 32PF5420710 not power on

We also need straight shot high res pictures of the whole bottom side of that power supply board so I can trace out the circuits.

[Nawual]

Re: PHILIPS 32PF5420710 not power on

Tomorrow I will see some indication from the back and what tensions are between the pins.

There are three photos uploaded in high resolution, are not they good?

I can go up more if the details are not well appreciated

[budm]

Re: PHILIPS 32PF5420710 not power on

Tomorrow I will see some indication from the back and what tensions are between the pins.

There are three photos uploaded in high resolution, are not they good?

I can go up more if the details are not well appreciated

Well, I do not see the pictures of the bottom side of the board.

[Nawual]

Re: PHILIPS 32PF5420710 not power on

Apologize for my english,its veeeeeeeeeeeeeeeeery poor.
I have confused:
"abajo" (spanish)= bottom with "detrás"(spanish) = back
I´ll take pictures

[budm]

Re: PHILIPS 32PF5420710 not power on

No problem.
English is also my second language, I know how it is.

[Nawual]

Re: PHILIPS 32PF5420710 not power on

Now I see that you live in S.F bay, there is also a lot of Spanish spoken in those lands.

Well, I upload those photos and measurements tomorrow.

Thanks for your help

[R_J]

Re: PHILIPS 32PF5420710 not power on

Here is a partial schematic of the power supply

[Nawual]

Re: PHILIPS 32PF5420710 not power on

Oh mate,very interesting,thanks!

[Nawual]

Re: PHILIPS 32PF5420710 not power on

Thanks to the pdf of the source uploaded in this post, I have removed the power source from the tv and I have connected on pin 10 a voltage of 3.3v through a 1k resistor. After that I have measured the voltages in the connector and I have obtained these measures:
Pin 1:24,7v
Pin 2:0v
Pin 3:3,3v
Pin 4:3,3v
Pin 5:0v
Pin 6:0v
Pin 7:0v
Pin 8:11,9v
Pin 9:3,3v
Pin 10:3,1v in+with external source
Pin 11:0v
Pin 12:0v

Well, I think the problem is on the main board. What do you think?

[tmcw]

Re: PHILIPS 32PF5420710 not power on

Just wondering if you made any progress with your issues?

I have a Philips 32PF5331/10, but mine appears to have the same power board as yours.

Mine is still working, but from cold, it can take a few times switching the set on/off before it will start up, but it seems to work fine after that.

I haven't had it long enough to test it further, but if you need any info or tests that I can carry out that might help, let me know.