[TechAssist] Re: Mitsubishi Tv CS2723C chas WM1-A-C23R, thin lines down left side of screen [update #2]
- From: "Edward Gaidies" <teltek2@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 17 Sep 2002 12:45:06 -0400
Gary;
Is that a 60 cycle bar that runs from the bottom to the top, or does it
start somewhere mid-screen?
-Ed-
Tel-Tek Electronics
Midland, Ontario
Canada.
teltek2@xxxxxxxxxxxx
----- Original Message -----
From: "Gary McCartney" <number63@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, September 17, 2002 10:46 AM
Subject: [TechAssist] Mitsubishi Tv CS2723C chas WM1-A-C23R, thin lines down
left side of screen [update #2]
>
> Well, I really felt that I had a chance to get this problem fixed with a
> new STRS5141G regulator. I installed a new one, and it's the exact same.
> The washed out band which crawls up the screen is what is bothering me
> the most, because it wasn't there when I first got the set running. Does
> anyone have any ideas on this?
>
>
> Thanks.
>
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> 7134 Fife Rd, RR 7
> Guelph Ontario Canada N1H 6J4
> Fax: (519)821-1530
> email: number63 (at) inetsonic.com
>
>
>
>
>
> My first updated message:
>
> I have now replaced every electrolytic cap on the deflection board
> except for the one by the standby transformer and the one by the relay.
> Also replaced every elctro. cap on the CRT board. Still have the lines
> at the left side of screen.
>
> Today, as I was replacing some caps, I noticed another problem. On
> brighter scenes, there is a 6" high band across the screen which slowly
> rises up to the top of the screen. When this band is seen, there is no
> chroma inside of it, and the video is washed out inside of it. Also
> inside the band, there seems to be a bit of ripple from the horizontal.
> This wasn't apparent for the first while I was working on the unit, but
> I don't have any idea if I did something to make this problem or not, or
> if was there all along and I just didn't notice it. I back-tracked by
> re-installing all the original caps from the point where I knew I never
> saw the problem. I am somewhat suspecting the regulator IC, STRS5141G
> but I don't have one in stock. While I was at it I replaced the vertical
> output IC LA7838. Nothing has helped. Made sure I installed all my caps
> with the correct polarity.
>
>
> Thanks for any help.
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> 7134 Fife Rd, RR 7
> Guelph Ontario Canada N1H 6J4
> Fax: (519)821-1530
> email: number63 (at) inetsonic.com
>
>
>
>
>
>
>
> My original message:
>
> This is a 27" Mitsubishi TV model CS2723C, chassis WM1-A-C23R. On the
> very left side of the screen, there are about 8 faint lines that run up
> and down the whole height of the screen. These lines are about 1/4" wide
> and spaced apart by about the same amount or a bit more. They only show
> up under certain screen brightness and colors. I have changed about a
> dozen caps in the power supply and around the flyback, etc. Some of
> these caps smelled fishy.
> Does anyone have a tip with a specific part that has solved this
> problem? I've spend too much time on it.
>
> Thanks for any help.
> --
>
>
>
> Gary McCartney
>
> McCartney Electronics
> 7134 Fife Rd, RR 7
> Guelph Ontario Canada N1H 6J4
> Fax: (519)821-1530
> email: number63 (at) inetsonic.com
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