[TechAssist] Re: JVC AV-27920 (D422) Zener

Ed, 

About a month ago, I was working on the same model.  I put (3) LA7832
chips in it.  Having no more, and seeing a tip in Winstips, I put it a
LA7833.  Worked fine.  Try it if you have one.


Ken Smith
Gulf Technical Services
3034 Gulf Breeze Parkway
Gulf Breeze, FL  32563
850-934-8324 (Voice) 850-932-0819 (Fax)


On Fri, 16 Apr 2004 12:52:46 -0400 "Ed Gaidies" <teltek3@xxxxxxxxxxxx>
writes:
> Bob;
> You are absolutely correct. All were bad. But alas...still flat 
> lined. I
> presume I have a bad new Vertical O/P IC. Although it calls for a 
> 7832 I
> replaced it with a 7830, which I think should be OK. But seems to me 
> I had a
> bad batch of LA7830, because I had a ?? on the bag. So I'll order 
> the LA7832
> and give it a fighting chance.
> Thanks.
> 
> -Ed-
> 
> -Ed-
> 
> 
> 
> Tel-Tek Electronics
> Ontario-Canada
> 
> teltek3@xxxxxxxxxxxx
> ----- Original Message ----- 
> From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, April 16, 2004 12:09 PM
> Subject: [TechAssist] Re: JVC AV-27920 (D422) Zener
> 
> 
> > See the following:
> >
> > JVC Vertical Failure
> >
> > You most likely have all or most of the following components 
> defective in
> > that unit (these are the usual bad components with vertical IC 
> failure in
> > these JVCs) so you better check or replace them all:
> >
> > IC421 (part# LA7832)
> > D422 (part# MTZJ75-T2) (75 volt zener)
> > D541 (part# RGP10J-5025-T3)
> > R541 (1.8 ohm, 2 watt)
> > C424 (100mfd/35v)
> > C425 (470mfd/35v)
> >
> > Bob Waterman, CET® #RI-28
> > Master Technician License #9109
> > Service Manager / Parts Manager
> > Gemini Computer, TV, & Security Alarms
> > (508)695-7302
> > (508)695-7769 FAX
> > geminitv@xxxxxxxxxxx
> > geminitv@xxxxxxx
> > www.geminicomputertvsecurityalarms.com
> >
> >
> > ----- Original Message ----- 
> > From: "Ed Gaidies" <teltek3@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, April 16, 2004 11:57 AM
> > Subject: [TechAssist] JVC AV-27920 (D422) Zener
> >
> >
> > > Anyone have a value for this zener from Pin 2 of vertical Output 
> IC?
> Diode
> > > is designated D422.
> > >
> > > Thanks.
> > >
> > > -Ed-
> > >
> > >
> > >
> > > Tel-Tek Electronics
> > > Ontario-Canada
> > >
> > > teltek3@xxxxxxxxxxxx
> > >
> > >
> >
> > 
>
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