I've got a Mitsubishi CS3535R TV. I know they have lots of capacitor problems, and this is likely one. It let out all of it's smoke about a year ago and after multiple component replacements in the power supply and a new vertical chip we got it running. I expected to buy a new HDTV this year of a certain size as prices dropped, but just when they got to where I'm comfortable making the purchase, the wife thinks one size larger would be just right, which pushes it out of my price range, so I'm back to fixing this one again.
The problem is that on white to black transitions (say a white square on the left of the screen) I see strong ringing to the right of that transition such that the black has gray bars parallel to the white just to the right of the transition. There would be perhaps 30-40 bars total across the screen if the transition were right at the left edge, but they decay out at about 10 bars.
During the last problem, smoke escaped from a high voltage cap on the neck yoke. After the other repairs, but before that cap was tracked down, the set had a similar problem, except that the ringing was from the horizontal sync pulse at the left edge and you could see it on entirely black screens. I don't see anything at the left side of the screen on black screens now.
I replaced the bad high voltage cap temporarily with one of questionable reliability (very old) and of course, after the
200 pound set was working, I was too lazy to order a new cap, pull it down, open it up again and replace that cap. Does this sound like that cap is my problem? If not, I know I'm looking at near the video signal pathway, and I know I'm going to get the ESR meter a good workout, but should I also look at filter caps for the power to various chips, or is this likely to be in the signal path?I really hate the weight of this set, but it looks like it has to come down at least for a while to fix this.
Thanks for any comments.