Read Sharp LC-50LE761K Service Manual online
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LC-42/50LE762
LC-42/50LE761
LC-42/50LE760
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C. Staying in Stand-by Mode
Problem: Staying in stand-by mode, no other operation
This problem indicates a short on Vcc voltages. Protect pin should be logic high while normal
operation. When there is a short circuit protect pin will be logic low. If you detect logic low
on protect pin, unplug the TV set and control voltage points with a multimeter to find the
shorted voltage to ground.
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D. IR Problem
Problem: LED or IR not working
Check LED card supply on MB90 chasis.
3. Staying in Stand by Mode
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