Question about Mitsubishi CS-40507 40" TV
#1. tv is 10 yrs old and has been trouble free until just this week. as i view programs the picture brightness would get dark and after awhile it would return to normal. tried adjusting but problem soon returns. right now it is intermittent. more of a problem when viewing a dvd as the picture will be dark throughout the lenght of the movie. initially when i first turn on the tv there is no problem. after awhile the problem will develop (as the set gets warmed up). also appears to have color bleed off (streaking) more visible with reds and orange colors.
The dark picture is a bad capacitor for the screen or drive voltage for the picture tube driver transistors. The other problem of streaking is one of the same. Thats the indication that a capacitors defective . It could in a rare cas ebe a defective or gassy crt as well but 99% of the time when a crt is said to be gassy its nothing more then poor drive to the crt. Good luck
Posted on Jun 13, 2006
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Posted on Jan 02, 2017
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