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Re: the tv won't come on
Try to unplug the set overnight to see if the Microprocessorr got a glitch. Try it the next day. If that didnt work i would say then your gonna need a pro as I've said before these sets have no user servicable parts inside so its not like the good old days where you take out a bunch of tubes and check them. Todays sets are all solid state electronic componets so you really have to know your electronics before you should attempt to repair a set these days as you could get a really big shock even if its unplugged. Sorry Good Luck
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Does the led ever stop blinking? No ..well in that case generally this indicates a standby voltage problem...if all those voltages ok then the cuircit known as digital module is at fault. also make sure the lockout has not been activiated. i really dont think it could but to unlock hold menu button down for 10 seconds. After all that i believe it would be a bad digital module
If i remember correctly ten blinks means a high voltage error. The only thing you could try is unplugging the power cord then plug it back in and try turning on the tv. If it still won't turn on try unplugging the power cord for five hours or longer and try again. If it still won't turn on it would be best to find a local repair shop that works on sony tv's and have them repair it for you.
When it shuts down go to the set and press the menu and the Device/Input button both in together and hold for 6 seconds then count the two digit blink code from the power indicator. it will blink a two digit code which repeats several times.
...OK to begin troubleshooting this. Unplug the set and leave for 1 min then plug up and leave for 2 min push the power button and let light blink for 2 min.... now push and hold at the same time the MENU and DEVICE buton st the same time. this is the self diagnoses feature ... the lights should link then pause then blink again... this 2 digit code will help narrow it down. Also have you check the lamp yet?
I suspect the lamp area is VERY dirty as is the cabinet's filters and fans. This causes great stress on your tv and lamp. Take the time to clean all of them fully. Is the unit in a dirty area? or in a high temp area? DLP's dont like high temp or contaminated areas as they are NOT air sealed units.
Sony TV;s will give a service code, count the blinks, eg; 2-6, light will blink X amount of times, hesitate & blink again so many times. Count and report back but, I would recomend to unplug the TV's power cord, to reset the TV's system. Unplug for at least 3 minutes. I hope this was helpful.