[TechAssist] Re: Zenith SL2784BT 9-1235/9-1268 DEAD

Peter, Tri-State Module has that 9-1268 listed in their catalog for
$69.95 exchange 1-800-203-7484, Happy Holidays, Larry E
American TV & Electronics
Crystal River, Fl. 34428

Peter oliver wrote:

> This sweep board (9-1268-02) is a rebuilt board so it is not the first time 
> this happpened. I tested the CRT with another zenith chassis (a 1400 series) 
> it runs ok. I tried a larger fuse 3A for the old smoke test.. There is a 
> massive amount of curent being drawn across the horzontial driver transistor 
> and the drive transformer they start to smoke without shorting???. The HOT 
> remains cold so it is probbably chassis time. The customer did not want to 
> spend the money for a new/refurb chassis. so they may call for it or I may 
> get stuck with it It's a nice set pip, SVHS, 2 video inputs, outputs ...27" 
> so I may end up fixing it anyway. Its weird people have been giving me a 
> number of 27" + sets lately, good brands like Sony, MAgnovox, Panasonic..
> 
> 
> Peter Oliver
> Tucson Radio TV
> 
> 
> 
> 
> 
> 
> From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: Zenith SL2784BT 9-1235/9-1268 DEAD
> Date: Tue, 24 Dec 2002 10:58:06 -0500
> 
> 
> Hi Pete,
>            With fuse blown check HOT collector, if B+ there, power supply
> probably ok. There have been problems with the audio panel soldered to the
> main board. There is a small two wire cable from the SMPS that plugs in near
> the metal box audio panel, unplug it. With jumpers hookup another fuse and
> try set. Another point don't get to involved as these are the sets with the
> bad A68AGD picture tubes.
> Bob,
> 
> Bobs TV   Worcester, ma
> 
> woodman1@xxxxxxxx
> 
> Main  508-853-1482
> Fax    508-853-1480
> ----- Original Message -----
> From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, December 24, 2002 12:40 AM
> Subject: [TechAssist] Zenith SL2784BT 9-1235/9-1268 DEAD
> 
> 
>  >
>  > Zenith
>  > model SL2784BT
>  > Split flat chassis 9-1235 main 9-1268 sweep/smps
>  > Customer complaint lost picture had sound then dead.
>  > Took apart and checked found H.O.T blown and secondary b+ fuse blown
>  >
>  > So Checked for bad connections, sested some surrounding electrolitics and
>  > replaced parts turn on pops fuse. HOT ok
>  > MAybe it's too close to chistmas and too long of a day but this one is a
>  > little strange
>  >
>  > Replaced Q3208  1148-01  sub'd 2sd1880
>  >          FX3408    2A 250V pigtail
>  >
>  > There aren't any obvious shorts or any 'smoking guns' to speak of.
>  > I guess I could replace the board if it's avalible, I haven't checKed yet
>  > Its been a busy day everbody wants stuff before christmas.
>  >
>  >
>  >
>  >
>  > Peter Oliver
>  > Tucson Radio TV
>  >
>  >
>  >
>  >
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-- 
Larry Eastman
American TV & Electronics
Crystal River, Fl.
http://www.tvjunkyard.com

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