SOURCE: Astar Plasma
I had the same problem... Astar 30" LTV 3001 ....These TV's have a cooling problem that causes premature electrolytic capacitor failure. De-solder and Test all the 2200uF-25v, 3300uF-35v and 1000uF-10v caps in the power supply (center board, back of TV). Use a good LCR meter that will read 3300uF or better, Replace all bad caps with 105c rated caps. If you don't have an LCR meter, replace all the mentioned caps on the PS. If fuse on board is blown, also replace the F9222L regulator IC chip. Mounting a small cooling fan on rear of TV over the PS will help keep your new caps from failing again. This requires holes in the stand bracket and the rear of the TV, power can be supplied from a 14V source near the bottom of the PS board.
SOURCE: On my Sharp LCD TV a black empty box appears
You will need to find the close caption feature in the menu adjustments and turn it OFF. You should do it for all the individual channels that have it activated.
SOURCE: Astar LTV-32ASB will not power on.
The power board is defectived, just e-mail me the power supply picture and I will help you go throuth the problem. [email protected] or call 323-767-6030
SOURCE: Astar LTV-2701 27
Symptoms of a Defective or dying Power supplies on LCD TVs.
1. Light(s) on the front panel are behaving not normal example, blinking, amber color or not steady, fainting, etc.
2. TV not turning ON properly.
3. TV turns OFF by itself.
4. Needs to be unplug to many times to make it work.
5. Humming or high pitch noise heard through speakers or at the back of the TV.
I repair these power supplies. Write to [email protected] if you require further assistance.
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