LCD TV Troubleshooting
The defective LCD TV may have the following common symptoms:
Symptom:
No picture on screen but LCD TV still has sound.
Solutions:
The problem is cause by defective inverter. Replacing ivnerter will solve hte problem.
Symptom:
Screen flash on and off between 1/2 to a few seconds,
but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective
inverter.
Symptom:
Blue Screen but no picture
Solutions: The problem is cause by defective
Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board.
Thsi board is mounting on teh back of LCD TV Screen.
Symptom:
Power light stays on but no display and sound
Solutions:
The problem is cause by defective Main Board(AD Board) or Power supply board.
Symptom:
No Power or Power indicate light does not lits
Solutions: The problem could cause either
by defective Power supply board or defective Main Board(AD Board).
Symptom:
Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.
Symptoms by the pictures:
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LST01
No more guess works!
LST01 is a custom build tester for Laptop screen repair;
it can help you to isolate the problem between CCFL Backlight Lamp and Inverter in seconds.
Save Time! Save money!
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LST02
It has all LST01’s features, plus a built–in LCD Controller
that equips with our proprietary driver. It allows you to apply any
test pattern through VGA input and test all types of specification on the LCD
and LED Screen. In addition, a custom design Inverter allows you
to test any given number of CCFL back light lamp up to 4 at the time. |
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IT01
IT01 is design to test multiple backlight lamps inverter;
it is capable to test any type of inverter up to 6 lamps at the time!
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IT02
Stand alone Inverter tester!
The advantage of this custom build tester is that, you can apply any input voltage
through DC Jack to test inverter from Laptop to LCD TV inverter.
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