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philips 42pf7520d grainy picture ?

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buncey:
hi i have a  philips 42pf7520d sets works but has a picture problem.

there seems to be purple or black grainy outlines on people and objects on screen.

anyone know what board might be a fault ?

thankyou

waxhead:
is it the samsung panel inside?

buncey:
hi waxhead no the panel is a Hitachi FHP A3 Plasma Panel panel number FPF42C128128UE-52.

waxhead:
have you tried any adjustments made on the Ysus board?
does the picture clear up after a period of time?

buncey:
yes there is no adjustment pots on the ysus board only 1 adjustment pot on the x but that did not make a diffrence  :dubbio:

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