LG Plasma – 2/20 point controls did not work
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This was an 8 yr old set
it failed & the customer had it serviced & 4 boards were replaced
as I tried to calibrate ISF Expert 1/2, didn’t matter whether I chose 2 or 20 point none of the controls made any difference
control range was -50 to +50, I needed more green @30IRE, at +50 hadn’t made any difference
tried different meter just to be sure (calibrated his Epson 8350 PJ just fine afterwards)
I can only assume that changing the boards caused this
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