Toshiba Regza 40RF350U, Руководство по обслуживанию

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Are
any problem
LED indications
exhibited after the
power button is
pressed?
No Yes
Does
3 VDC appear at pin 3
of P806 when on-off
is pressed?
No
Yes
Is
5VDC present at pin 1
of P806 when the unit is
plugged in?
No
Suspect the
Low B supply
circuit.
Is
5VDC present at pin 12
of P811 with the unit
plugged in?
No
Yes
Suspect the main
power supply, then the
Low B supply circuit.
Suspect the
system
control
(SYSCON)
circuit.
Yes
Use
the LED blink
chart to help
locate the
problem.
Suspect the
main power
supply
circuit.
Dead set – no
sound or picture
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