samsung 58 inch plasma

[adamp91gvm]

hi i have a plasma samsung there is no picture at all sound is there but the screen does not even flicker in the dark the logic board on it just flashes 1 green led it does not flash on the front just like its on but with no picture any ideas u guys thanks

[freakaftr8]

Re: samsung 58 inch plasma

First we need model numbers and clear pictures of the boards inside.the tv.

Time to start checking voltages. you need a voltmeter and test voltages from the power supply outputs to the y and z main boards. There are some plug in connectors on the power supply that go to these y and z main boards that are located on each side of the tv. First unplug tv. Take back cover off.

There is quite a bit of dc voltage in these TVs so be careful with what you are doing. Once you are there you need to locate the output pins for VS and VA. Set your meter on DC voltage auto range. Black lead anywhere like a screw lug on the chassis and red lead VS then VA when powered up.


Let us know what you find.

[adamp91gvm]

Re: samsung 58 inch plasma

Right it's started clicking and not powering up so im changing all the caps on the power board first it clicks then clicks and then clicks over and over but no sound

[anotherdude]

Re: samsung 58 inch plasma

3 threads all on the same tv yet still no model number

[tom66]

Re: samsung 58 inch plasma

saying "58 inch Samsung plasma clicking" is about as good as saying "my car won't start, it's a blue Ford."

[adamp91gvm]

Re: samsung 58 inch plasma

It's a pn58b680 t6w

[adamp91gvm]

Re: samsung 58 inch plasma

Any ideas when I turn it on it does not play the start up sound it clicks over and over

[tom66]

Re: samsung 58 inch plasma

Could be main board, Y-main, X-main, panel.... how about some pictures?

[hienton2]

Re: samsung 58 inch plasma

main board problem . Hard to find this board.

[freakaftr8]

Re: samsung 58 inch plasma

I would start by disconnecting power lines going to Y and Z sustain boards, with tv unplugged. Then power on and see if it still clicks on and off.

[adamp91gvm]

Re: samsung 58 inch plasma

[adamp91gvm]

Re: samsung 58 inch plasma

[adamp91gvm]

Re: samsung 58 inch plasma

[adamp91gvm]

Re: samsung 58 inch plasma

[adamp91gvm]

Re: samsung 58 inch plasma

[adamp91gvm]

Re: samsung 58 inch plasma

on this one im getting a clicking sound on the power board im getting 202 from the vs then the power drops when the second click so it would be . CLICK 202V ........CLICK 201 200 199 198 and so forth

[adamp91gvm]

Re: samsung 58 inch plasma

i have narrowed it down to being the av board

[adamp91gvm]

Re: samsung 58 inch plasma

tom66 any places i could have a look on there to check voltage ?thanks

[tom66]

Re: samsung 58 inch plasma

How did you narrow it down to main board? Did you do the test pattern jumper?

[adamp91gvm]

Re: samsung 58 inch plasma

Well I have changed all the caps and I'm getting the right voltage to the main board and I think I may of caught a compasitor on the av board when I was checking it because it did power up just with no pic