No picture and No sound
Check all the settings microprocessor's adjust process menu.
Do F3301 and F3302
function?
Are T3701's secondary
outputs, +34V, +9V, +5V
and -110V normal?
Replace F3301 and F3302.
Check S4001 and
connection cable.
Is T3701's primary oscillator
waveform normal?
Check T3701's secondary
load.
Yes Yes
No
No
No No
No
Yes
Check J3300 periphery and
connection cable.
Replace F6501 and F6502.
Yes
Yes
No
No
No
Yes
Yes
Back light lamp failure to light up
Is the primary side of
T6500, T6502 periphery
short-circuiting?
Replace the back light lamp
with new one and check
again.
Remove F3301 and F3302
and check the load side.
Is there short-circuiting?
Is there short-circuiting of
T3701 primary side periphery,
Q3701, Q3703 and S4001.
Is the pin(121) of IC1201 in
the "H" state?
Is the output of Q3601 in the
"
L
"
state?
Check the OFL2 line, IC1201
and their peripheral parts.
Check the OFL2 line, Q3601
and their peripheral parts.
Check T6500, T6502, Q6500
~ Q6704 and connection
cable.
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