[TechAssist] Re: Sony KVTS20 (SCC-A50G-A) Black Screen in 3" on Left side of PiX.
- From: Bill Grabowski <bgrabowski@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 07 Mar 2005 19:39:59 -0600
Check your 200volt B+ usually a 4.7M to 10M 250volts.
Bill Grabowski
Triangle Appliance
Kenosha, WI 53142
Bruce Tiedeman wrote:
> Black screen in 3" on left of picture. It looks like a bad cap, but have
> checked and changed many. The picture looks good except for this. It does
> not look like a horizontal problem. There is no distinct line where it is in
> from the side, the black kind of bleeds in . The regulation and horizontal
> pulse looks very clean.
> If I vary the screen VR control on CRT board it does affect the black area
> some .. I don't think this set uses the IK circuit like some. I don't have a
> print to check the video circuit. I am hoping some one that works on a lot
> of Sony's has seen this before. I ESR'd most caps, used heat on the caps
> and cold spray but do not see a change in the condition. The picture
> condition stays the same hot or cold.
> thanks
> Bruce.
>
> B&T Electronics
> 139 Margaret St
> Sarnia Ontario
> Canada
> N7T 2Y3
> 519 344 1850
>
>
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*****************************
Bill Grabowski
Triangle Appliance
Kenosha,Wi 53142
262-694-6500
262-694-6523 fax
bgrabowski@xxxxxxxxx
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