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Well..having worked on a LOT of these plasma sets a few years back (when they were NEW..)..I can shed some light on things...maybe..
You say you are getting 10 blinks ...and no power up.
WHen you disconnect that big connector--I think it is SC-1..do you THEN get about 200 or so volts on the other end of that cable at the P board--power supply--for a couple of seconds ?
ANd with the SC-1 connector CONNECTED...does that voltage stay LOW?
It is NORMAL on one of these sets for you to get a 6 blink code--if that ribbon cable is unhooked fomr the SC board.
ALso OHM the SC-1 connector--when the cable unplugged. if it shows LOW ohms..less than maybe 5K ohms...the SC board has some shorted IGBT transistors.. A VERY common problem on these sets.
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