Question about JVC AV-32260 32" TV
As best as I can describe, it appears that the lines of the video picture that should be displayed in the top ~ 1" of the screen are being interlaced/overlapped into the display 3-4" just below. The spread is getting worse over time. Is it ever worth paying to get a repair diagnosis?
The problem is bad capacitors in the vertical deflection circuit. and bad solder conections on the vertical IC. your picture is a clasic example of the this condition. thank you for posting it. the capacitors to check are C1424,C1425,C1427,C1428, and C1433 the IC is marked IC1421. the most likely capacitor that is bad is C1427 this is a 1uF 50v. these caps suround the vertical IC the is a LA7841.
Posted on Mar 22, 2008
Note to technotop: There is more danger of 110V "killing" you than 30KV that you can't possibly hang on to long enough to kill you ! Besides.what would we be doing working on a TV while running if we are using an ESR meter ?? This comment is for
Posted on Mar 23, 2008
The diagnosis is frame foldover at the top of the picture with possibly the showing of some teletext information. It is difficult to be sure of the geometry from the picture, but are the sides bowed? This could indicate not only a height problem but also a width problem too. If this is the case then probably one of the main power supplies is running at too high a voltage. Most of these problems are caused by faulty electrolytic capacitors.
Repair of televisions should only be attempted by professionals as there are internal voltages that can kill. A good technician with an esr capacitance meter should quickly find the faulty components and provide a fix..
Please rate my assistance I hope it is helpful.
Posted on Mar 22, 2008
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Posted on Jan 02, 2017
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