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Shrinking screen. I have a 12 year old Toshiba 2877DB TV which works fine for awhile then starts having flickering black lines across the bottom of the screen. These become worse, after awhile a solid black line develops across the bottom and gets wider until the picture is shrunk into the top half of the screen. Sometimes after this point the screen will suddenly just blank out completely.

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Re: Shrinking screen.

Hi there, you do have a vertical section problem and at the power supply section problem. do some test, check for some cold solder at the power supply section, test some electrolytic capacitor at the vertical section. ty

Posted on Jan 01, 2008

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Mitswubishi VS-5077 TV - Display would work and flicker to black screen. We would wait awhile try again.....picture would work and then flicker and go to black screen. Now black screen w/ only volu

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If you are not able to attempt this the set is too old for a shop repair in my view as many parts for it are no longer available.

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you probably just need to resolder the vertical output IC. It will be mounted on a heat sinc. probably 7-10 pins. Part number may start with "LA" like LA7845 or similar, there are others though. You will probably see the rings around the solder joints on the bottom of the board. Good Luck

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