I'm seeing many people are having the same problem. I was wondering if the other problems just happened out of nowhere? My tv was perfectly fine, worked great. I dusted it off one day and now it won't turn on. I get the standard power on sound but it then goes in standbye mode and blinks in 2 beat phases. I read that it is power supply. I just thought it was wierd how it just all of a sudden did this. Anyhow, any information would be awesome. Thanks!
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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
I have this model of the sharp tv.Happen to me very often the Power and OPC LED light indicators blink continueosly.Not the power supply board,it the Tuner board that take in the comming broscast signal that have the problems.You still can used this tv.Push the power button sometime the tv it will work right away.Not,each time POWER and OPC lights continueosly blinks.Just push the power button again each time the POWER and the OPC continueosly blinks.Just have push power button again about 4 times each time Power and OPC blinks recycles,it will finally show the backlight and picture come on.My guest,if u do this by pushing power button to recycles about 10-12 times each time the POWER and OPC blinks it time to change the Tuner signal board.
I have one of these wonderful units. Most common failure is power supply. There are three capacitors that tend to fail early and often.
New PS board is around $200 and a guy on ebay has a repair service just for Philips LCD TV power supplies for $99 (you know it's a common problem when there are whole businesses being created to fix the problem).
Also on ebay you can buy a philips LCD TV 'power supply repair kit' for under $20 which has replacements for the cruddy parts that philips put in at the factory.
The number of blinks of the LED are actually a blink-code, which, while typically wrong, is supposed to help point out where the problem is. Most common flashes are 4 based on limited googling on the problem.
Before thinking of TV problem, you should play a DVD first and see how it goes. TV problem only happens when all sources were affected. If you have the same problem for all sources, open the cover, disconnect LVDS cable and re-connect it; then try to tap or shake gently the LVDS cable and see if the picture changes. If yes, replace LVDS cable. If not, then measure the power on supplies from main board to power supply board, see this 5 VDC is stable or not. If it works fine, the problem may come from T-con board or some case from defective panel.
The problem can be caused by either a Bad Main bd or a Bad Power Supply bd. Those two boards are the common failures. Other boards that can cause this are the T-Con bd and the Inverter bds.. To determine if your tv is in or out of warranty you need to look at your tv Purchase Receipt and see what the Purchase date is. Samsung gives you a One Year parts and labor warranty from the date of purchase on your set. You can also call 1-800-Samsung for more assistance.
in protective mode the tv does not turn on and light is blinking,
typically we must proceed by elimination as some faulty sections are
preventing the tv to switch on. unplug the output power connectors from
the power supply until the latter stop clicking. if it is still
clicking after every of the output rail have been disconnected, then
the power supply itself is faulty.
but anyway 3 circuit boards seems a lot to be replaced in a row.
It's possible your TV when into protection mode. This happens when a part is burned out inside your TV to prevent further damage.
Try unplugging your TV for 30mins. Then see if the problem still occurs.
If the problem is still there, you may have to take it to a repair shop to diagnose the problem.
Five blinks is a severe hardware failure supplys not working. Viper is down. You have atleast a bad power supply board could have taken out your sustain boards. If you are good with a meter you can measure voltages and see if just your power supply is dead. If you have never handled a multimeter you will need a tech and a power supply is not cheap..Power supply is about a 600 dollar board.
How old is the unit?
ever replaced the lamp?
Sounds like a major power supply failure
Hope you are under warranty
Samsung has lots of problems with this technology
Here is their phone for executive customer relations: 1-800-522-7341