Just had the exact same problem. A Technician from an authorized Samsung service center checked mine and said the convergence unit was gone and it does not allow the TV to turn on. He demo-ed by turning the convergence off and the TV turned on but the picture is very poor and out of focus. He also told me a need a blue tube and other parts for a total cost of ~ $800. No impressed as this TV is only 4 yrs old and is now worthless.
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Please describe the problem more accurately. Flashing red usually means 'stand-by' state, flashing blue/green - starting up. When (during that) do you have a sound? Are there any 'high voltage' sounds like soft screeching from the screen? Is it LCD or LED?
First turn on,do the power LED light stable?Few sec.Power LED and LED OPC flashes?This very common on Sharp tv,tries power off/on at 4 or 5 each time it flashes,well power up have backlight on and it work.After this doesn't work than ur Tuner Signal board it dead.
This is very common in sharp tvs.U turn it on.U get power on light stable right?U hear a click,one or twice,sometime tv is good right?Sometime POWER light and OPC light flashes?Push the power button on/off couples times will work, picture will come on.If keep trying off/on couples time after POWER and OPC flashes,don't ever stop and never get backlight and picture.Ur Video backlight board is dead must replaced.
turn tv on picture comes up 2to3 seconds later tv blacks out then stand by red light flashes 4 times in a row repeatedly..can not turn on or off when stand by light starts flashing but before tv blacks out you can turn tv on and off repeatedly and picture and sound work.You have to unplug power cord for 30 seconds after stand by light comes on to get tv to turn on.