Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV
CHANGE IC202 WITH TL431 OR TRY PUSH INPUT AND VOLUME DOWN THEN PLUG THE POWER UNTIL THE GREEN LIGHT START ,,, WHEN IT START PUSH VOL DOWN AND CHANNEL DOWN AT THE SAME TIME AND PLAY WITH THE SETTING
Posted on Jul 16, 2013
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Posted on Jan 02, 2017
SOURCE: LC-37AF3X Sharp Aquos KCD TV
If the TV goes in standby, then it is in protection mode.
Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.
1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
If under warranty contact the manufacturer ringing the number on the user manual
If you want to repair at your own expenses, just locate any good qualified repairer.
If you want to DIY you find parts here,
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On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem
On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.
On Rear Projection : check lamp, lamp ballast, power board, and convergence.
On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.
Posted on May 05, 2009
SOURCE: my sharp aquos powe lite
IS the light on the tv blining or on the media receiver box? How many times does it blink in between each pause? Please provide this info so that we can continue the diagnosis
Posted on May 16, 2011
please try to count the exact number of blinking lights to diagnose where the fault came from..
Also try to open the cover and look for any bulged capacitors on power supply board..
Posted on Dec 19, 2011
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