TV Repair Questions? Ask a TV Technician
have you tested the voltages coming out of the power supply feeding the y board?
can you tell me what they are? also are the tv`s menus dark also?
can you attach a picture or two ? to attach use the paper clip button right above where you are typing.
well you either have a bad panel or a bad z-sustain board. feel the heat on the z board and tell me if it is warm or cold after the tv has been on 15 mins.
the voltage is only there when the tv is on is normal. you have a bad z-sustain board.
so let me be sure i got this right. you only have a dark picture for just a few secs and then the picture goes away and sound stays?? right?
ok because you said menus are dark and whole screen is dark.. so i thought you had a dark picture but you do not have one at all...
remove the lower buffer and see if the top half of the picture comes on..
i am not sure yet we need more testing. you said you replaced the y-upper scan?? if so remove the one underneath it and try the tv without in the tv.
let me know?
ok unhook the y-sustain and the z-sustain from the power supply and turn on the tv and see if the 205 comes back up?
so the 205 never comes up now?
ok you are talking about the buffers on the far left? top and bottom?
well either this board is bad or the panel itself is shorted. there is no way to tell other that replacing the board.
are you talking about the y-sustain?
you said earlier that with the x board the voltage stayed up??
here is the statement you told me earlier today
(i have hooked up the top buffer , know as the x doard , the voltage is not threre now )
i do not think it is the power supply if so the z-sustain would also make the voltages go down
now of the side left of the tv you have two scan boards or on this model it may be one long board either way it is hooked to the y-sustain on the left. have you unhooked it with everything else hooked up?? and if so did the voltages still go down?
no main board would not do this
where did you buy your y-sustain from?
do you have a camera or cell phone camera? i really want to be sure we are on the same page, because i do not think we are.
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unhook everything from the y board except the power supply and see what happens