[TechAssist] Re: Zenith SG2795BK giggerish characters appear across screen, intermittantly.
- From: "Bob@bobsTV" <woodman17@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 02 Jun 2005 12:40:17 -0400
Phil,
The ZCU is on a module that plugs through top of the 700 module, I have
the training manual.. tells basics what parts are where and how it works.
Everything else is on microfiche ... Let me know if you want me to mail it
to you....
Bob.
Bob's TV Worcester, ma
woodman17@xxxxxxxxxxx
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, June 02, 2005 11:19 AM
Subject: [TechAssist] Re: Zenith SG2795BK giggerish characters appear across
screen, intermittantly.
> It was also suggested to me that I may... :
>
> "have a bad Epprom or ZCU they are both to be replaced at same time"
> Do these ICs live on this 700 module as well? And their location/ numbers
would help.
> Thanks again in advance,trying to save this for these folks.
> Phil Bader
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
>
>
> Bob@bobsTV wrote:
>
> >Phil,
> > Many problems like you describe were caused by the IC sockets on the
> >700 board... Remove the plug in IC's and clean the pins with pencel
> >eraser..The set will operate with top cover off but with a very poor
> >picture. I still have a lot of chips for that set new/used if you need
> >any...
> >Bob.
> >
> >Bob's TV Worcester, ma
> >
> >woodman17@xxxxxxxxxxx
> >
> >
> >
> >----- Original Message -----
> >From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Thursday, June 02, 2005 10:01 AM
> >Subject: [TechAssist] Zenith SG2795BK giggerish characters appear across
> >screen, intermittantly.
> >
> >
> >
> >
> >>This is an older Zenith. It's the model with the very large module
> >>sitting on the bottom.(large shields at the top and bottom).can't
> >>remember it's module number. Known for bad solder. It had lots of
> >>cracked connections. I resoldered it (a job) and played it a long time
> >>OK. Customer called,said these characters are reappearing across the
> >>screen again. Nonsense words, gibberish letters,etc. Sometimes I could
> >>clear by pushing "enter", etc.and other buttons.
> >>I know the set uses these modules:
> >>Video 9-369-03
> >>SMPS 9-604-03
> >>sweep 9-605-01
> >>main 9-700-18
> >>IF/Audio 9-701
> >>Keyboard/micro 9-943
> >> I would like to know which of these is the likely culprit. and/or a
fix.
> >>Thanks,
> >>Phil Bader
> >>
> >>--
> >>
> >>Philip Bader
> >>Jan Phyl TV Inc. (estab. 1976)
> >>3420 Recker Hwy. Winter Haven, Fl. 33880
> >>Fax (863) 299-8821
> >>email: tjanphyl@xxxxxxxxxxxxxxx
> >>
>
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