Standby On/Off Problem; No Signal Problem - Sharp LC-40LE530E Service Manual

LC-32LE530
LC-40LE530

13.9. Standby On/Off Problem

Problem:
Device cannot boot, TV hangs in standby mode.
There may be a problem about power supply. Check 12V_VCC, 5V_VCC and 3V3_VCC
with a voltage-meter. Also there may be a problem about SW. Try to update TV with latest
SW. Additionally it is good to check SW printouts via hyper-terminal (or Teraterm). These
printouts may give a clue about the problem.

13.10. No Signal Problem

Problem: No signal in TV mode.
Check tuner supply voltage; 5V_TUN. Check tuner options are correctly set in Service
menu. Check AGC voltage at RF_AGC pin of tuner.
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