General discussion

Samsung plasma HP-T4254

I have a 42" plasma hp-t4254, that is only getting audio through the headphone jack. No audio is coming from the main speakers. I replaced the power supply board to fix the bad capacitor/diode/mosfet issues which the new board took care of but I still only get audio through the headphone jack on the side AV panel. Anybody with any ideas would be greatly appreciated.

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I'd try a tv repair forum.

But since you are into repairs did you check the switch that is in that jack with an ohm meter?
Bob

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plasma

Would that switch be stuck in the closed position? What would the meter read in that situation?

Thanks for taking the time

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Sorry

But it appears you are new to testing that switch.

Here goes nothing. Once I find the switch contacts I put on the Ohm meter and then insert the headphone. The switch would go from open to closed.

Here's a common plug/switch diagram.
http://upload.wikimedia.org/wikipedia/commons/8/88/Phone_jack_symbols.png

Type A and B don't have switches, but C and D do.

Again, since you are a TV repair tech, I'm a bit surprised at your question.
Bob

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Not a TV repair tech

Far from it, just trying to be self sufficient. Thanks again for the help, i just have one more question. If I went ahead and replaced the main/mother board, would take care of the no audio issue? Because looking at the Samsung service manual for this plasma, it tells the tech that if the speakers are good to replace the main board. I just don"t want to replace the board only to find out that the problem was something or somewhere else in the set.
JEB

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Should.

But as there are other small variables such as the headphone and other boards, this is why your TV tech has a full complement of boards and even his own headphone to test it with.
Bob

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