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It could be the temp sensor going bad. This sensor sits on top of the
metal housing which the bulb assembly slides into. The bulb assembly
will have a hole on top and this is where the sensor is above. There is a
small blue and white wire that plugs into it. If you pull the wire out
and put a paper clip or wire in the coupling you will basically bypass
the sensor connecting the blue and white wire. If your tv turns on then
that is your problem. Its cheap too. Here were my symptoms..1] Turn tv
on 2] Bulb would light up..(which eliminates the ballast) regular
picture would show up (which eliminates the bulb and color wheel) 3] 30
seconds later tv would shut down with 3 flashing lights. After bypass
the tv turned on as always and hasnt shut down yet. Always un plug tv
first. Get the replacement part to avoid overheating and possible fire
My T.V. wouldn't turn on. The standby light was flashing six times, then four, then seven...I called Sony and they told me to unplug it for a couple of minutes, then try it again...didn't work....BUT, I have found a solution:
Try unpluging your T.V. for 4 hours+, then turn it back on. Worked for me! It's called a "hard reset" by sony. I had my T.V. unplugged for the whole day though.
1 check remote control.
2 tv comes to stand by to protect itself
3 there might be problem in power supply section
4 & if it is ok check horizontal section.
5 call skilled tech to fix it.
6 it is not a major problem.
I don't know the age of your set but I've found some Panasonics with a loose connection on the heat sink (an aluminum plate standing vertically on the circuit board) of the regulator IC (chip). The IC gets its ground through the heatsink. If the ground is open the power supply puts out too much voltage and causes the set to go into shut down. I've found this problem several times.