Question about Mitsubishi WS-55807 TV
I have the TV since 2000 or 2001. It just happened yesterday that the TV's sound will become loud for a few seconds and then come down. The volume can not be controlled anymore. Out of 100 minutes of TV watching, the volume will come up and down for about 10 minutes of total time. Beside this problem, the TV will occasionally display some white lines cross the TV. The lines will stay for about 3 to 5 seconds. This only happened for about 1% of time.
This model is equipped with a keyboard lock feature. To unlock the keyboard press and hold the "menu" button on the front panel for 10 seconds. If this doesn't help you have to make some checks in set. First IC7D04 (temperature related) may cause lines in pic. Check 9v DC on terminal PCB at Connector JA pins 57&58 if missing then change IC9C25 part#270p677030 on signal PCB.
Posted on Sep 26, 2007
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