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Old 03-13-2026, 10:06 AM
TinCanAlley's Avatar
TinCanAlley TinCanAlley is offline
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Join Date: Sep 2008
Location: So Cal, CA
Posts: 1,020
Been awhile since I posted an update and possible question or two.

I managed to get my hands on a new IC for the chroma board and just got some 16pin sockets. I'm going to remove the individual pin sockets on the board and replace with a single unit and put the new IC in. I'm leaning toward all my tint issues being this board. The tint is done by the subcarrier by changing the phase of the burst which then goes to the chroma board. At first I thought the subcarrier, but now I get sudden burst of fully saturated color as if I turned up the color control to max. It can last anywhere from 1 second to almost a minute. Yesterday during a couple of hours of viewing, it did it 9 times and the tint wandered a bit, but nothing extremely noticeable. Since the burst with tint phase hits that board, and the color is done on that board, it is most likely on that board. The IC handles both of those, so if it's faulty, changing it is my next step in troubleshooting.

And of course I have a question. I've noticed recently that on images with red or orange, there is a ghosting of that color to the left of the image. For instance, a person was wearing red suspenders and to the left of the suspenders, there was a lighter transparent red on his shirt leading to the suspenders. I also noticed the same with someone wearing orange. No other color does this. Might by related to the issues I'm having with tint and color saturation. All searches I've come up with point to a capacitor, but I've replaced all the electrolytics. Guess one could be bad already.

If you want an pic, I can take one and post it.
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