TV is about 6 years old and have noticed lately that it takes a minute or two for the picture to "sharpen" after having been off awhile.
Tonight turned it on and picture went out and got blinking red power light (no picture or sound).
Opened back panel and removed the red connector at the very back of the board behind the STK's. After I plugged the TV back in, the picture and sound came back fine. Plugging the red connector back in (after power off/on) causes the blinking red light again.
Does this sound like a problem with either of the two boards connected to the red projector or the red projector itself?
Wondering on a cost estimate for parts and if it is even worth repairing.
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Re: Apparent problem with red projector?
Service manual here
I would not replace one stk but all....
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Discharged Flyback Transformer. Removed main pc board from bottom of TV and flipped over, no apparent damaged components or blown board traces were found. Noticed a lot of flux in various areas on the board that seemed unusual (maybe TV was worked on before as I bought a showroom demo at Circuit City). Used a plastic screwdriver to remove all flux between connections on ICs, Transformers, Flyback Transformer, and various other components. Cleaned all debris, dust and crud accumulation (TV is over 10 years old and there was alot around the Flyback Transformer) from both sides of board using a lightweight paint brush.
Used a magnifying glass to check all solder joints for possible cold solders and found none. Did the same for Power Supply Board. Checked various ICs and Power Transistors for opens or shorts (in machine) and they seemed fine. Reinstalled boards, said a few Hail Mary's and fired it up.
The protector Led no longer flashed under power and lo and behold I got picture and sound!
I cleaned the lens on the projectors (again 10 years of dust accumulation) did a magic focus adjustment and it works fine!
After reading other fixes, I fully expected it to die after 10 minutes so I left it on all day and against all odds it still works.
What was the fix......Dirt buildup on and around Flyback and other components,,,,,,Flux conducting electricity between contacts on Flyback and other components.....or oxidation on connectors between Power Supply and Main Board.....I don't know.... all I know is that for the moment I saved around $ 300 - 400 in repair bills by doing it myself.
I have a philips pf50 9630a/37 tv may come on or it may not unplug it and take a chance then comes the 6 steady red flashes followed by 3 rapid red flashes the screen had been completely replaced by philips a year and a half ago
TRake the fron grill off and the front board 6- screws on my 65inch there are three adjustment knobs one of them wil adjust the huge
one the whole screen,if not that,I have heard mold growing on and the inside of the blue bulb because it runs the coolest out of the three.
you need to take the screws out from around the screen in the back, on edges, go to the front and take the screws out from the bottom of the screen, should be 4 or 6 in the front, pick up on the screen and lift off, only about 8 pounds, now clean the little mirror in front of the projector, and clean the dust off the projector lence, that will solve it, iv had to do this on about 50 of thease tv's
Tried to turn it on? Sounds like you need to replace the lamp. However, I got an additional week out of my unit. Although poorly dimmed and the red Lamp light blinked constantly for that one week, at least it gave me enough warning to seek out a replacement. But so long as you're not mistaking the Power/Standby or Timer light for the Lamp light then I would have to agree with you.
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