Had a quick question on this LG and found another thread talking about my exact issue where within the thread, Tom66 posted:
"OK, on the Y-sustain, there should be some points or components marked Vsc and -Vy, do you see these? They may look similar to the "Vzb" marking on the Z-sustain in the top right corner."
The answer to that in THAT thread was low VZB, indicating a bad Z-SUS, but in my set, the VSC and VY are only 19v, everything else in the set checks okay.
My question is: if my VSC and VY on the Y-SUS are measuring only 19v, is this a clear indication of a defective Y-SUS? This is a Y-SUS that was just installed because the set was in shutdown with an obvious bad Y-SUS; replaced it, now set runs, but no prime. I didn't suspect the Y-SUS, until remembering to check the VSC and VY after ruling out buffers, Z-SUS, logic and Main. (I've checked the buffers: no shorts. No blow fuses on any board. Logic and main board have been substituted with no change and then I found this low VSC and VY.)
"OK, on the Y-sustain, there should be some points or components marked Vsc and -Vy, do you see these? They may look similar to the "Vzb" marking on the Z-sustain in the top right corner."
The answer to that in THAT thread was low VZB, indicating a bad Z-SUS, but in my set, the VSC and VY are only 19v, everything else in the set checks okay.
My question is: if my VSC and VY on the Y-SUS are measuring only 19v, is this a clear indication of a defective Y-SUS? This is a Y-SUS that was just installed because the set was in shutdown with an obvious bad Y-SUS; replaced it, now set runs, but no prime. I didn't suspect the Y-SUS, until remembering to check the VSC and VY after ruling out buffers, Z-SUS, logic and Main. (I've checked the buffers: no shorts. No blow fuses on any board. Logic and main board have been substituted with no change and then I found this low VSC and VY.)
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