Tc-42px14

[alfredomfr1]

This TV come to me with a 9 times blinking red light.
I replaced A Board and after that TV show a solid red light.
Vs, Va and 15v ok (no short circuit)

I made all this variants in order to determine the defective board

Case 1:
SC20, C10, SC2 and SS11 disconnected: Red light blink 6 times.
Case 2:
SC20 disconnected: Red light blink 6 times.
Case 3:
SC20 and C10 disconnected: Red light blink 6 times.
Case 4:
SC20, C10 and SC2 disconnected: Red light blink 8 times.

[alfredomfr1]

Re: Tc-42px14

Pictures

[alfredomfr1]

Re: Tc-42px14

Any help ?

[Fwrothy]

Re: Tc-42px14

Excuse me in advance for asking but...Is this model # correct?

[Fwrothy]

Re: Tc-42px14

Ok so the reason I asked was I just worked on a TC-p42x3, I spotted your panel sticker and see its a different panel(2009) and the boards are different but perhaps I could apply what i learned to help you since the locked red led seems key.
Basically we started with the set powered of and unplugged, by disconnecting the cable from p board to sn and checking sn for short.

[alfredomfr1]

Re: Tc-42px14

There are not short between the boards and the Power Board.
Actually I disconnected the C1 board and the panel the result was half of the screen with image as I show on the picture

[alfredomfr1]

Re: Tc-42px14

Model # is correct: TC-42PX14

[Fwrothy]

Re: Tc-42px14

There are not short between the boards and the Power Board.
Actually I disconnected the C1 board and the panel the result was half of the screen with image as I show on the picture

So with c1 connected you have no picture?

[Neelix]

Re: Tc-42px14

I'm not following

[Fwrothy]

Re: Tc-42px14

Neither am I, if you were to disconnect C1, that is exactly what you would expect to see, I believe.

Here is the service manual:

[alfredomfr1]

Re: Tc-42px14

Yes, you right and I think that the panel is ok.
But I can't determine the defective board.
There are not short circuit.

[Fwrothy]

Re: Tc-42px14

Ok can you describe what the set does when you plug it in and turn it on-with everything reconnected?
I think we have deterimined that you have a solid red led, right?
Does the screen come on briefly or at all?

[alfredomfr1]

Re: Tc-42px14

Hi Fwrothy
With everything reconnected, the screen remain black but I know that it is energized because accidentally I didn't connect well one of the C cables (cables between the panel and C1 board) and I can see and small bright line on the top of the screen as you can see in the picture

[Fwrothy]

Re: Tc-42px14

Yes, you right and I think that the panel is ok.
But I can't determine the defective board.
There are not short circuit.

I think we are starting to go in circles here...
I am just a novice at this but I'm trying to help you gather some information so maybe someone can help you.
Maybe I am not asking the right or most relevant questions but by you not answering them we are getting nowhere.

[alfredomfr1]

Re: Tc-42px14

Sorry, the think is that with everything connected, the screen remain completely black.

[alfredomfr1]

Re: Tc-42px14

sorry my English is not good, I try to say: the thing is that with everything connected the screen remain black

[Fwrothy]

Re: Tc-42px14

Does it 'flash' briefly when you first turn it on?

[alfredomfr1]

Re: Tc-42px14

nothing

[Fwrothy]

Re: Tc-42px14

I realized that english was not your first language early on, no problem I will try to be clear

Since I am not familiar with the set, a good clear photo of the whole back of the TV ( showing all boards) would be good.

Do you have a multimeter? Next you should check the Vsus and Ve voltages at the P board. The values are on the panel sticker.
These are high voltages so you need to be careful.