[TechAssist] Re: Mitsubishi TV CS-2578C - Vertical Problem
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 13 Dec 2003 13:25:31 -0500
Did you check for bad solder on the transistors? also did you check the caps
in the vertical circuit? You don't say what you checked. Also make sure your
B+ is clean to the transistors.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, December 13, 2003 1:06 PM
Subject: [TechAssist] Mitsubishi TV CS-2578C - Vertical Problem
> Yup, I know it's old.but the customer wants it fixed. So far replaced
> shorted Q591 - HOT (ECG2302), C410 (10uf/100v) - value changed <4uf, and
> F902 (1.2A fuse). When fired up notice arcing near top of flyback to
> ground (flyback bracket), fixed the arcing (I may replace the flyback),
> anyway now there is vertical line with missing picture on top of the
> screen and a partial image on the bottom half of screen. Vertical
> deflection consists of an upper and a lower deflection transistor, not a
> vertical IC. I'm not familiar with this chassis at all. What causes this
> problem? Capacitors and/or leaky transistors? You older Mitsubishi techs
> must have seen this before. Any advice as usual is greatly appreciated.
> God Bless America (North and South)
>
> David Lessard
>
> Alexandria Electronics
> 50 Harrison Street
> Alexandria, Ontario
> K0C-1A0
>
> mr_fixit@xxxxxxxxxxxx
>
>
>
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