Ctc 195 series rear projection T.V. piture quality
While watching a movie on my tv the screen all of a sudden distorted into rainbow colors i turned it off and it wouldnt turn back on i replaced the fuse in the back regaining power, but my picture is bowed into the center what is wrong with it and how do i fix it?
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Re: ctc 195 series rear projection T.V. piture quality
Can you post a picture of what the video is doing? It shounds like a pincushion problem, but it may be convergence amp as well. A picture could clarify it for me so I would know which direction to assist you in.
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Your convergence chips and convergence resistors are going bad. When they fail the screen colors will look distorted/3d looking. Another symptom is one or more colors can't be converged using the convergence menu. You can purchase the parts over the internet. Just make sure you get Sanyo brand convergence chips and the correct flame proof resistors. You can also check the site www.TvRepairKits.com. They are working on a complete kit for this model.
Try unplugging your set, If you didnt save the changes this should reset it back to default settings. If that desnt work, you will need to go bak into the service manual and adjust the horizontal size. Just write down anything you change so you can revert back if you have too.
It's most likely a failure of the convergence amp and some other power supply problem in the convergence circuit by the sounds of it... Your unit takes an STK730-130 and some 750k 1/4w resistors for the yoke return. I would bet two or more of them are out of value, at least R19702 and R19703... There are also two diodes Cr19710 and Cr19709. P/N# 164590 which commonly open under a load and are recommended to replace anytime the convergence amp is replaced. Also check Q19700 (Bc457) which crosses nicely to an NTE123a...
Not real expensive in a reputable shop - just a pain this time of the year.. I would recommend getting it repaired, it's worth it..