I have a 8/98 Sears Model # 626.54538, Chassis #PTV800-AHO1 good sound and picture works but colors are not exactly what they are supposed to be(ie...It is difficult to tell yellow and red apart). The television is better the darker the room is but it still isn't good. Gaming is next to impossible on anything where you have to see subtle color differences. Any suggestions would be awesome
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while i dont have a true answer, I can tell you its a magnavox tv sold by sears produced back in 93. Ours just started doing this last week. I couldnt find any help online so we replaced it with a new led flat panel. WOW what a difference, the LXI was great for the past 17 years but the new tvs are better. We put the LXI in the garage because we couldnt throw it away. That tv was like a family member, if i figure out how to fix it i will post the how to.
ok her is a good test for u, bring up the pip on screen and see if the picture is the same as the main picture ok.now if at is it sounds like to me that u have a bad pip board that is causeing your problem u can bypass the pip u just need to jump the video in to the video out and sync out and in and remove the pip most of time i have found that the small caps go back on the board and u lose snyc and that is y your picture goes black and white with blinking color in the background. now the stk392-150 is a better chip then what u had in it but convergence problem has nothing to do with color snyc. i hope this will hp u marty
the easiest way is to turn the color all the way down to zero. Then notice the overall color of the screen, if it doesnt appear as a good black and white picture you will have to adjust the screens. To do that you have to remove the speaker grill cover and the small access panel, then depending on the chassis you will see a small square with 6 dials on it 3 on top and 3 on the bottom it will have screen stamped on it. adjust those 3 untill your screen appears the best black and white picture as possible. Now if your chassis only has 3 dials on the sgaure control box those are focusdont adjust them. . then the 3 CRT boards will have the dials you need adjust those for the best black and white picture. when your satisfied that you have a good black and white picture. then turn your color back up and adjust the tint.Let me know if you need more assistance.
Can you describe the issue a little more? It may be a convergence issue which is quite common on big screens. But there are quite a few issues that can cause a bad picture.
If it's convergence, you'll be able to tell by going to a news channel and looking at the text. If the convergence is bad you'll see a ghosting like image of 2 or 3 letters for each one that should be there.