[TechAssist] Re: Sony KV40XBR800 4" vertical lines at bottom
- From: "J Silverman" <greentron@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 2 Jan 2004 11:18:13 -0500
Sounds more like a vertical problem to me. The vertical scan integrating
capacitor may not be getting completely discharged during the retrace period
due to high ESR. Look for a cap in the vertical circuit, like 100 ufd, 35
volt.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "Technotronic Dimensions" <Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, December 31, 2003 12:50 PM
Subject: [TechAssist] Re: Sony KV40XBR800 4" vertical lines at bottom
> Its loosing Horizontal Scan about 90% of the way down. Vertical Scan is
> still completing. So it could be a component degraded below tolerance -
> perhaps a Cap or resistor in the Horizontal. Maybe Heat or cold would
cause
> the problem to appear and reappear? Just a Guess.
>
>
> Steve Hearns
> Technotronic Dimensions, NY (USA)
> 1-877-817-9885 (Voice / Fax US Only)
> WWW.TECHNOTRONIC-DIMENSIONS.COM
>
>
> ----- Original Message -----
> From: <tvservice@xxxxxxxxxxxxx>
> To: "Tech-Assist" <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, December 31, 2003 12:27 PM
> Subject: [TechAssist] Sony KV40XBR800 4" vertical lines at bottom
>
>
> Hey group another Sony I'm not familiar with,
> Got fax from GE Protection Plus about this problem
> Customer say's picture is good and appears normal except about 4 inches up
> from bottom the raster has vertical dashed lines
> as here: ------------------
> l l
> l l
> l l
> l l
> l lllllllllllllllllllllllllllllll l
>
> What do you think? Jungle chip?, Micro?
> by the way I have no service manual
>
> Robert
> tvservice@xxxxxxxxxxxxx
> H & H Electronics Inc
> Dallas, TX
>
>
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