Hi, I have the same problem that everyone else has, my tv is coming up on 11 yrs old. It blinks every 3 secs when i first turn it on, then as its is on longer it blinks once every 30 secs. After about 20 mins of being on it doesnt blink at all. Is this fix you all are doing going to do anything for me or should i just let it warm up before I watch every time?

i have a larger rear projection screen as does dawn. and when the screen is on, it takes a few minutes in, then starts blinking, or rather blanking out, and i noticed that the "TIMER" LED display on the front of the unit blinks the same time the screen blanks out. HELP!! I dont think thered be such a knob screw on a rear projection, need to know if anyone had experienced having a repair done with the same problem. Also i bought it for $60 knowing the problem existed, do i now own a boat anchor?

Having the same problem with my Sony TV. Do you have to do the same thing to fix a 53" rear projection TV?

I have the same problem except the tv is 53" Sony rear projection.

I can't find the black knobs...Are they on the picture tube or one of the other boards?

Thanks alot I found a TV on the side of the road and bought it home...googled the blinking problem and found this page and it worked perfectly, thank you I just got a great tv for free

tv blinking every other second.. wanted to smash it.. but didn't want to open tv.. too big 36" so I turned the brightness all the way down and the picture option to half way.. and it stopped blinking..

The adjustment you are looking for is on the flyback transformer. On my set the flyback is at the bottom to the right of center. There should be 2 adjustments on the flyback assembly -the one at the bottom is what you are looking for. Mine has a white material on it for knowing where it is set at the factory. The best way to adjust it is to turn on the TV, get a black screen, and adjust it clockwise a tiny bit until you see retrace lines (diagonal lines). Then back it off until you don't see the lines anymore. All you have done is increased the current to the CRT cathodes enough so that the detection circuit is satisfied and it doesn't do a video blank. Of course this is a cheap trick to squeeze a little more life out of a dying CRT.

I appear to be the only person having trouble finding the black knobs...are the on the picture tube or one of the circuit boards?

Hello all; Well, my Sony 32" TV just went dead on me after just 2 weeks of blinking in and out as you've all described on this message board. I guess it's pointless trying to turn the knob now at this stage. Does this definitely mean my picture tube is Shot or could it still possibly be another problem?