Re: LG 42PX4RV-TA, Black screen but sound ok
OK, do you see the 4 pin connector going to the Y-sustain from the power board? It should have 5V on it.
If you do not have any slight glow from the plasma panel, then there are three possibilities (given heatsinks on boards are getting warm):
- Lack of Y-ramp waveforms for panel initialisation, although, some pixels should still work
- Both Y-buffer faulty
- Broken panel glass in some way or gas has leaked (non repairable)
OK, do you see the 4 pin connector going to the Y-sustain from the power board? It should have 5V on it.
If you do not have any slight glow from the plasma panel, then there are three possibilities (given heatsinks on boards are getting warm):
- Lack of Y-ramp waveforms for panel initialisation, although, some pixels should still work
- Both Y-buffer faulty
- Broken panel glass in some way or gas has leaked (non repairable)
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