Question about Sony FD Trinitron WEGA KV-24FS120 24" TV

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Picture and sound problem at 21" sony waga color tv

In my tv set, after running some time, total screen became out of picture but some colors are visible, and after that the tv black out i.e no sound and picture present. At that time the power indicating LED shows red,orange, light green etc. color and after sometime color change off but the power light blip four times after every four seconds. My English is not so good if you need more explanation, please ask me.

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Re: picture and sound problem at 21" sony waga color tv

This is due to problem in deflection area and power supply section malfunction. Make one general service by technical person immediately to avoid major transformer failure problem. Since this is initial stage, the cost of repair is probably less.

Posted on Aug 28, 2007

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Re: picture and sound problem at 21" sony waga color tv


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Check all the solder terminals at its video output card;[CRT base card]. Check the soldering of the CRT base socket. A dry solder joint or an open color output transistor can cause this fault; provided the picture is there. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
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It needs repaired. I can think of many different possibilities causing the problem: 1. Shorted video luminance driver transistor. Should be under $200 total repair if you take set in. 2. Shorted green kine bias transistor. $200 3. Failed jungle ic. $250 4. Shorted green gun in the picture tube. More than you paid for tv set... Rca picture tubes commonly run 25% more than the tv set did new!!!!!!!

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