Question about Sony FD Trinitron WEGA KV-32FQ70 32" TV

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Vertical hold is always giving problem. it just switches off. then sometimes comes ON. I removed the revolving base & put it on flat table & it works. Dono where is the problem can you guide me where to get its schematics? Thanks.

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From what you say about the set working when it's flat on the table, I would say you just have bad solder connections on the board. When the set is flat on the table, the board isn't being flexed as much and the connections are working.

A schematic isn't much help in a case like this. A good light, sharp eyes and probably a magnifying glass is what you need. Tap gently on the board while the set is on and see where the trouble area is. (Obviously you will use something non-metallic...I use a bamboo chopstick.)

When you find the area most sensitive to tapping, examine all the solder connections and resolder any that look questionable. Be especially wary of anything mounted on a heatsink. Sony sets have had many models where connections on power transistors caused many problems.

Good luck, and thanks for using Fixya!

Posted on Oct 08, 2010

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