I replaced all the caps my TV turned on with sound and picture after about 15 seconds I loose picture/backlite but the sound stays on.I found the 10 ohm.resistor near the LED open so I replaced it and now the red led is fine.(This is not a 2 color led no green on power up)
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I am afraid it sounds as though either your backlight or power inverter has gone faulty, may be worth contacting alba to see if they will honour the warrenty (unlikely but worth a go) otherwise maybe try your home insurance to see if its covered, failing either of these options, if you feel confident doing so, disassemble the tv and look for any signs of visible damage (capacitors leaking or any components looking burned or scorche, and replace. Try looking for any panel markings which will allow you to search for a price to replace the whole unit. Unfortunately I cant give you and hard and fast cure, and it is very difficult to tell whether it is the inverter or the backlight has gone (having said that, if you are getting picture at the very beginning, it may suggest that the inverter is getting the power to the backlight ok, which may suggest its the backlight at fault.) Hope this helps.
Sounds like the backlight power supply is shutting down and not providing the backlight needed to view the picture..this is a very common problem with flat panels as the components used are running at high speed and elevated temperatures.
The tv have a long board call a LCD inverter board.This long LCD inverter board is dead.That why,the tv have picture only flashes like a min. than,died and have sound left only.The LCD long inverter board help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish long LCD inverter board for the replacement.
This problems,i fix alot models of tvs all diffrent models of tvs but have the same board alway dies.The LCD inverter board is dead.This board help the LCD to have a backlight to go through the Turner board to produce a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.The board is long in shape.It the easiest board to replaced in LCD tvs.
There are a few things that can cause this fault, but the most common is the High Voltage Capacitors that feed the backlights going bad. The invertor and power supply are on the same board (Vestel 17IPS01-2)
The caps are on the power supply board and are C355 & C356 (12pf 3kv) and C354 (4.7pf 3kv). If you replace these caps it will solve the problem in 99% of cases.
If replacing these three caps do not solve the problem then it may be easier to replace the power supply board... as fixing means replacing a tiny surface mount chip with loads of legs.
WARNING: The Power Supply/Invertor board can contain LETHAL VOLTAGES even when turned off and unplugged. if you are not sure, Pay someone to do it for you!
Open the back of the TV,and look at the can shaped items on the boards.If any of them have the tops,or bottoms bulged out,they need to be replaced.This should get it working again.I hope this helps.If you have any questions,please let me know.Thank You very much!