Question about Westinghouse LTV-32w4 32.02 in. LCD HDTV
I am a TV repairman and I have repaired TV's almost everyday for the last 30 years. And I know from experience that if an electrolytic is warm on the top of them that they are starting to go bad. My suggestion is this: Take the one's that are warm out and if you have a capacitor checker, check them to see if they are weak in capacitance. If you don't have a checker the best way is to replace them. It will be worth the effort to find out. I very often, take capacitors out of a spare board (not the same) and use them. I am assuming you are referring to the power supply as the main board. The capacitors that are in line with the voltage to the inverter is 24 volts and they sustain the voltage and keep it up under a load to light up the backlight. You could look and see that some boards put the voltage by the pins on the connectors and this may help if it does in this case. However, the inverter has switching circuits to produce the high voltage to the transformers on the inverter to light up the backlight and if they don't turn on then no backlight. Inverters are highly intergrated so replacement is best. Also there are fuses on the inverter labeled F1, F2 etc. Check them for continunity. It the fuses are open then you for sure have a bad inverter board.
Posted on May 26, 2011
If the capacitors are running hotter than usual then its certain that they are damaged. It will actually more economical and time saving to spend 40$ to replace the board. I suggest that you go ahead and replace the board
Click here to order the board
Posted on May 25, 2011
OK thanks for the all information and voltage checking you done.Because of that it makes easy for me to determine the exact problem.
If the inverter board has at least 24vdc or 25vdc and no output reading.The problem could be the inverter board.please replaced it.
The pins 1 through 4 (VCC) is normal because the inverter is not function if the inverter is good and function properly the VCC is down to 24vdc its normal.
The other pins is not normal because the inverter board have no output (defective).
The capacitors you mention is warm because of bad inverter again so if you replaced the bad inverter the capacitors are turns in normal.
I'm very sure that inverter board is defective (100% sure).
Thank you and good luck.I hope this information will be helpful.
Please don't forget to rate my answer.
Posted on May 25, 2011
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Posted on Jan 02, 2017
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