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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Sony KV-32V16 : Loses VIDEO , repeats erratic
The screen goes to "black", then the video returns ,does not matter what
video source or VHF , the menu as well disappears. The audio is not affected It seems to become better after a hour , meaning the video stays on Will look for possible cold solder joints, any other suggestions Russ |
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Sony KV-32V16 : Loses VIDEO , repeats erratic
99% sure it is the picture tube.
Very Very Very common failure mode on Sony sets with AKB, especially certain vintage 32" tubes. Since you are also losing OSD the tube is being blanked out. You can confirm by VERY slightly turning up the G2 voltage to the tube when it is blanking out, if the blanking stops and solid video is restored, the tube failure is confirmed. If it were a more solid failure like the vertical circuit failing, it would have gone out completely by now and would not likely get better when the set is warm but worse. David Russ Wright *NO*SPAM* wrote in message ... The screen goes to "black", then the video returns ,does not matter what video source or VHF , the menu as well disappears. The audio is not affected It seems to become better after a hour , meaning the video stays on Will look for possible cold solder joints, any other suggestions Russ |
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Sony KV-32V16 : Loses VIDEO , repeats erratic
On Fri, 1 Aug 2003 19:47:27 -0400, "Russ Wright"
*NO*SPAM* wrote: The screen goes to "black", then the video returns ,does not matter what video source or VHF , the menu as well disappears. The audio is not affected It seems to become better after a hour , meaning the video stays on Will look for possible cold solder joints, any other suggestions If I remember right, it's the IK circuit shutting off the video due to a bad CRT. Tom Russ |
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