Sharp 29V-FT450S - Page 29

29V-FT450S/29V-FT95S
29
NO PICTURE
Does the snow noise
appear on the screen at
maximum contrast and
brightness ?
Snow noise
increase
Does 5V appear
atpin7ofTU51?
Does 31V appear
at pin 9 of TU 51 ?
Check TU 51
Check the PC+5V line.
Check +120V line and
its related circuit.
YES
YES
YES
NO
NO
A
NO