Hi, have a 60PK950 LG Plasma here behaving for 4 years and then decided not to.
Top/bottom screen flickers when powered on and after a few seconds both halves go almost blank with occaisional few flickering horiz lines once in a while but the sound is ok.
If I press the input button, the system input menu sometimes appears and is visible but the top half flickers on/off and the bottom half flickers on/off at different rates and after a few seconds back to blank screen with some occaisional flickering thin horizontal lines.
Control board led looks like its blinking.
Powers on and after a while also goes to standby..I've tested Va/Vs and both are within range. I think power unit is behaving ok.
I've tested Vz on the positive side of the resistor against frame as ground.. the voltage is inline with expected so I suspect ZSUS is ok.
Testing Vy and Vsc on either side of the resistor against frame as ground finds no voltage.
Questions:
1)Is this a bad YSUS you think?
2)Am I testing the Vy/Vsc/Vz resistors correctly by using frame as ground? I do not see any onboard grounds..
3)Since I do see the input screen for a few seconds before it goes blank on each powerup, doesnt that mean both Y buffers are ok or could they be struggling or is it all the YSUS?
I assume if the buffers were bad they wouldnt even give a few seconds..
4)I see fuses on these boards..but I'm used to the old fashion glass fuses with the wire inside.. if one of these new non-glass fuses blows how can you tell? Are these new fuses resettable or something?
Regards,
Eins
Top/bottom screen flickers when powered on and after a few seconds both halves go almost blank with occaisional few flickering horiz lines once in a while but the sound is ok.
If I press the input button, the system input menu sometimes appears and is visible but the top half flickers on/off and the bottom half flickers on/off at different rates and after a few seconds back to blank screen with some occaisional flickering thin horizontal lines.
Control board led looks like its blinking.
Powers on and after a while also goes to standby..I've tested Va/Vs and both are within range. I think power unit is behaving ok.
I've tested Vz on the positive side of the resistor against frame as ground.. the voltage is inline with expected so I suspect ZSUS is ok.
Testing Vy and Vsc on either side of the resistor against frame as ground finds no voltage.
Questions:
1)Is this a bad YSUS you think?
2)Am I testing the Vy/Vsc/Vz resistors correctly by using frame as ground? I do not see any onboard grounds..
3)Since I do see the input screen for a few seconds before it goes blank on each powerup, doesnt that mean both Y buffers are ok or could they be struggling or is it all the YSUS?
I assume if the buffers were bad they wouldnt even give a few seconds..
4)I see fuses on these boards..but I'm used to the old fashion glass fuses with the wire inside.. if one of these new non-glass fuses blows how can you tell? Are these new fuses resettable or something?
Regards,
Eins
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