I had this exact same problem - it was intermittent at first happening once every few weeks and it would just start working after 2 or 3 tries but then it started getting worse - happening every couple weeks - then days - then hours ... until i got to the point that it just would not work. i figured out that on this model the four blinking lights meant that it was an overheating problem. so here is what I did.
I took the back off the TV which gave me access to the Lamp cooling fan - it was caked with dust ... so I cleaned it up really well, spun it around a few times and made sure it was moving easily... i put the back on again and it started up no problem. I think the TV checks to make sure the lamp cooling fan turns on correctly when you turn on the TV and if it doesn't it shuts itself down to protect the TV from the excessive heat. so just make sure your fan is unobstructed and spinning freely and it should eliminate the problem.
Like several of you, I had the same problem (4 blinking red lights on the standby indicator). I too had lots of dust in and around my TV. I vacuumed around the lamp area, cooling fan area and panel area between lamp and fan. I did not remove back cover or fan from TV. I turned on the power button and had a picture for 2 seconds. I unpluged TV for 5 minutes and rotated the fan from outside of TV with a small chop stick. I rotated the fan about 1 full turn. Pluged in TV and turned the power on. Yes..Yes...Yes.. My TV turned on and seems to be working fine.
Thank you FIXRUPPR and jmaransky for the information on how to correct the problem.
Like Jason2112, I had the same problem (4 blinking red lights on the standby indicator). There was LOTS of dust behind my TV. I took my vacuum cleaner hand-held attachment and cleaned all the dust from the back of the TV and the cabinet where it was stored. Then, I took the hose and held it against two fans in the back of the unit to **** as much dust out as possible. I did not remove the fan or any component. Turned the TV on and it worked great!
Thanks very much FIXRUPPR - you saved me some serious cash!
I love the internet! Here I am having the EXACT same problem. 4 Red Blinking lights... I cleaned out my cooling fan (Lower Left) but to no avail. I did what FIXRUPPR said. (Lubricating the spindle and housing for the fan, and it worked like a champ. Outstanding. It's 1:43 A.M. and I'm ecstatic.
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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given.
It is rear projection TV that use 3 picture tubes of red-green-blue to show color picture on tv front screen. Do you see standby red light blinking when TV shuts off after showing blue image for a while? If red standby light is blinking, please count it how many times it blinks, there would be 3 seconds pause between blinks so count pause to pause and post it here to find out possible solution. Thanks.
How many times is the red light flashing? The number of times the red led blinks means---
Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.
One blink - not used for the self-diagnosis
Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.
Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.
Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.
Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.
Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).
Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.
No blinks(Unit is dead) - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).
Please do rate this solution as FixYa and revert for further assistance.
Hi, this is a very common failure, you need to replace 2 IC chips on your power supply board, marked on the top of the IC`s is this number: MCZ3001D you can purchase them here if you are very proficient at soldering & un-soldering, and the board has to come out of the tv to do this, you might want to call a tv man for this one, but it will fix your set, happy holidays, BMW Rider
* Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some newer models of Sony TV sets, this code means that T8005 is defective on the D board. That would be the fly back transformer and the horizontal output transistor.