[TechAssist] Re: Sanyo Mod # AVM-1903U Chasssis # G4S-1903U0
- From: "Barry Appleby" <burintv@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 13 Nov 2001 17:26:51 -0330
Hi Buck . Does that set use a STR30135 voltage reg and if so is it steady at
135v when you have the problem ? Is there a R007 [5.6ohm] connected to pin 3
of the voltage reg ? I looked through all my Sanyo prints but I don't have
a print on it and haven't got one with a LA7673 or something close . The
first thing that I thought after reading your post was a bad ground
somewhere . Did you change the HOT when you checked and changed most of the
components in the horz circuit ? Does it get better or worse if you tap or
flex the board ? Barry .
>From: "sterling pasher" <spasher@xxxxxxxxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Sanyo Mod # AVM-1903U Chasssis # G4S-1903U0
>Date: Mon, 12 Nov 2001 11:34:08 -0330
>
>
> I have a problem with a Sanyo that I have not seen before. The
>horz.lines of the raster (with no antenna) wil very on the sides. Some
>times
>they will be anywhere from one half inch up to one and one half inchs short
>on the sides. For example one line will quit about one in from full width,
>the next one may be one half inch short and an other may be twice as far
>out. This happens all the time with out video. When I put RF or AV video
>some times it will be alright but eventully it will show up and be worse
>then when only raster.
> Several things I have done 1.changed the yoke and the flyback 2.
>change rth signal processor (LA7673). 3. Checked or changed most of the
>components in the horz. and power sup ccts.
> Can't see anything on the scope , so I have myself a little problem. I
>dont know where to look.
> If anybody has run into this or any thing of this nature would sure
>appreciate any help
>
> Buck Pasher
> Buck's T.V. Service
> Gander NF Canada
>
>spasher@xxxxxxxxxxxxxxxxx
>
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