[TechAssist] Re: Sony KVTS20 (SCC-A50G-A) Black Screen in 3" on Left side of PiX.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 08 Mar 2005 07:28:32 -0500
You did not provide the complete model number. Sounds like either a bad
10mfd/250 volt cap or a regulator IC issue, depending on the model.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
----- Original Message -----
From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, March 07, 2005 4:53 PM
Subject: [TechAssist] Sony KVTS20 (SCC-A50G-A) Black Screen in 3" on Left
side of PiX.
> 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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