Sharp LC-26SH12U Service Manual - Page 21
Troubleshooting Guide
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UPC - 074000370012
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TROUBLESHOOTING GUIDE (LCD SECTION) POWER DOES NOT TUNER ON Is F401 broken? Yes No Is there voltage at pin 1 No of IC402 6V? Yes Yes Is R412 broken? No No Is there voltage at pin 10 of IC401 19V? Yes Change DIGITAL PCB. Change F401. Check IC402 and peripheral circuit. Change R412. Check IC401 and peripheral circuit. E-1
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TROUBLESHOOTING GUIDE
(LCD SECTION)
POWER DOES NOT TUNER ON
Is F401 broken?
Is there voltage at pin 1
of IC402 6V?
Is R412 broken?
Is there voltage at pin
10 of IC401 19V?
Change F401.
Check IC402 and peripheral
circuit.
Change DIGITAL PCB.
No
Yes
Change R412.
Check IC401 and peripheral
circuit.
No
No
No
Yes
Yes
Yes
E-1