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With plasmas, ive learned the rule of thumb is this:
Y sustain and buffers MUST be changed TOGETHER at the same time!!! They work hand-in-hand, and any failure in one WILL Affect the other in most circumstances.
I throw all my plasmas away when I get them with blown buffers.
Also, if the screen is lit up, whether its bars, or whatever, as long as the screen is LIT. it confirms proper operation of the sustain module. This is an amplifier module that drives high voltage from a waveform generated in the control logic, to the panel. This allows the addressed electrodes to discharge. This high voltage is ALSO passed through the y-address buffers, which is why they blow up, the silicon dont last as long constantly pulsed with changing currents/high voltage.
plasmas are just one huge design flaw. PERIOD.
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