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the problem is probably your main power board.. these can be replaced by yourself.. find the model no and then enquire about a replacement board ..I have had similar problem tv repairman wanted $500+ to fix board only cost $134..make sure to disconnect power supply ..undo all the screws around back of case including wall mount and base follow power lead entry into case do not touch any circuitry as some capacitors store power disconnect the little plugs that run from the boardundo the 4 screws and replace with purchased replacement board and re assemble..
Yes. If you are not performing the repairs yourself it is time to take it to the repair shop before the main board and power supply both need to be replaced. It might be too late and both of them may already need replacing. That is a costly repair and you might just want to purchase another tv, but let the repair service provider test the board and power supply and he'll let you know. That way you'll have peace of mind and know exactly what is going on.
LCD tvs have power supply board problems very common are parts call capacitors are alway have leakages it bulges up on it tops or puffing up on it tops.These capacitors parts are dying about to be dead.That why,ur tv is not getting power,power light flashes,delay power on to tv like 2 to 5 mins or more.U know basic electronic and can do soldering?Check the power supply board for those dying about to be dead capacitors,that bulges up it tops or puffing up on it tops.Replaced these dying to dead capacitors,will fix ur tv power supply board problems.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replament.
It would be a lot cheaper if you just replace the two caps that have gone bad. Just get a cheap solder pencil from the store and about an inch of solder and you are in business.
The Power Supply Board is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.
Sounds like you are have a bad main board and or power board. You need to contact the TV manufacturer and describe your problem. A lot of these parts have lifetime warranties depending on manufacturer. the service call is comped. If the power board is getting power, you should be able to see a small led light on the power board as well as a click when the unit powers up. If you dont see either of these, looks like your power board is out. hope this helps and good luck, J
I'm not sure about the specific problem solution,but I can point you in a good direction, look for 3 legged transistors mounted on heat sinks,they are usually called output IC's or driver ic's. There are 2 in particular that control x and y axis visuals and if they read 0,then they are shorted and need to be replaced. if they are near a metal coil,then ignore the above statement. also,try unplugging the LVDS cable,it's a cable with many tiny wires that goes from the small signal (scaler to other manufacturers) board to the display panel,if it lights,its either the logic board or SSB.
I will say that the part that you bought could have been removed from another LCD and it might not be working properly due to components that become defective when they overheat.
It looks like there are not service parts or they are difficult to find.
Most power supplies I've repaired have components that failed after about 1500 hours of use.
The only way to get the LCD working is to repair the power supply to the component level instead of swapping it.
In about 95% of the time the power board is defective.
Let me know if you need further assistance.
The power supply board or inverter board most likely has gone bad. Take advantage of the warranty. Let the tech do the hard stuff and he should have you going in no time. If he is factory service he may have the board/boards with him and it don't take long to change them right in the house.