This is a CRT I sold a few months ago and it's came back with this weird issue. It's intermittent, but not a thermal fault, or tap sensitive - just completely random. The right side of the picture completely blanks out (picture is not shifted). The on screen display is unaffected though, so not a fault in the line section. Anyone seen anything like before in a CRT?
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you have regulator R at the horizontal section to move the Picture left and right, move the picture if it moved left and right only at the displayed screen. then you have crack, if the picture moved to the right black side. then the IC or cap. -
Thanks Diah, I'll check this when I get it back on the bench tomorrow.
When the TV is working normally (most of the time) the width and horizontal potentiometers operate correctly. The TV only goes into this fault mode occasionally and only for a few minutes.Comment
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Your fault is not in the horrz. deflection circuit, that part is working, if it was not, the green menu bar would also be shifted, it is likely with the video signal processing, try a different source and see if that corrects the problem.Comment
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R_J the test of regulator R at the horizontal section i mentioned just to know where will the display move.... this Sony are modern CRT with digital SW for HORZ. menu will pass away as they are step .png photo or sign will display on screen.
in short words its like CRT PC MonitorComment
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Hi, well today I turn it on and the fault is there instantly. I tried width control and horizontal center controls. Both controls do adjust the overall position and width of the entire screen, including the blank area. I left the TV in the fault state for around 15 minutes, then the TV lost line sync completely. The vertical sync is ok. Could my problem lie within the TDA8304, or the TDA3505 possibly?Comment
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