samsung ln46a540p2fxza no power

[ealequi]

Re: samsung ln46a540p2fxza no power

same reading

[ealequi]

Re: samsung ln46a540p2fxza no power

23 transformers. i am using Fluke 113 set on vcheck auto

[ealequi]

Re: samsung ln46a540p2fxza no power

I used another tester and still getting the same amount of volt.

[selldoor]

Re: samsung ln46a540p2fxza no power

Hmm The fluke can measure to 4 places - please can you try a couple of the transformers again with the meter on manual 20 volts( or 10 volts if you can set that as a range) and also if you can set it to record the maximum
voltage during the test.

From the video it suggests we are looking for less than 1 for the good ones and 1.25 to 3v for bad ones.

[budm]

Re: samsung ln46a540p2fxza no power

You are only getting 1.8V on the both ends of the fuse of the T-CON board? If that is the case, then it is not right. Black probe on the chassis?
I still like to know if the backlights do stay on.

[ealequi]

Re: samsung ln46a540p2fxza no power

i try with another meter and still not getting reading from those that i already especify

[ealequi]

Re: samsung ln46a540p2fxza no power

sudenly the tv start making the cliking sound again

[ealequi]

Re: samsung ln46a540p2fxza no power

when i tested i had the negative in the chassis and yes the back light was still on.

[selldoor]

Re: samsung ln46a540p2fxza no power

How long do the backlights stay on for?

[ealequi]

Re: samsung ln46a540p2fxza no power

As long as i leave the tv on.

[tom66]

Re: samsung ln46a540p2fxza no power

So right now we need to look at the t-con power source, it is only 1.8V, I would advise considering a replacement of the main board as that is what switches power to the T-con on and off. Unless you wish to dive in, maybe a bypass (straight to 5V or 12V) would work, if you don't mind some screen flickers when TV first turns on.

[selldoor]

Re: samsung ln46a540p2fxza no power

Oh ! I thought they were going off

So all the bulbs must be ok - Have you got a source connected?

[ealequi]

Re: samsung ln46a540p2fxza no power

Yes, a dvd is conected and running. Tom, buying a board will not help me, i want to learned. Lets do it.

[tom66]

Re: samsung ln46a540p2fxza no power

Part number of main board please. Will be indicated next to "PBA NO". Not the same as "PCB NO".

[selldoor]

Re: samsung ln46a540p2fxza no power

Board Label

[ealequi]

Re: samsung ln46a540p2fxza no power

bn41-00975b main board

[tom66]

Re: samsung ln46a540p2fxza no power

That's a PCB number, we're looking for a PBA number. BN96-xxxxxx or BN97-xxxxxx

[selldoor]

Re: samsung ln46a540p2fxza no power

I posted a picture of it? BN97-01985v and other numbers I thought may help ^^^^^

[ealequi]

Re: samsung ln46a540p2fxza no power

that is the same number than mine

[ealequi]

Re: samsung ln46a540p2fxza no power

the one you has posted is the same one i got bn97-01985v