[TechAssist] Re: JVC AV-27920 (D422) Zener
- From: "Tel-Tek" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 18 Apr 2004 14:05:53 -0400
Thanks Peter. Good to know.
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, April 18, 2004 11:37 AM
Subject: [TechAssist] Re: JVC AV-27920 (D422) Zener
> Just a side note they will also replace the LA7831 even though the chip
> looks completly diffrent, the active pins in the center are the same and
the
> pin spacing is the same, had a magnovox a year ago that was a giveme hotel
> special, mounting clip held it and a 7832 worked just fine in place of the
> 7831. (was out of LA7831 and sanyo semiconductor listed it as
discountinued
> which ment that finding an authentic part was decresing in probabbility)
>
> Peter Oliver
> Tucson Radio TV
>
> From: "Tel-Tek" <teltek3@xxxxxxxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: JVC AV-27920 (D422) Zener
> Date: Sun, 18 Apr 2004 08:43:18 -0400
>
> Thanks Al;
> I agree...But I had 2 bad ones in my batch, so it threw me for a loop.
> I re-ordered 5 from Global..(LA7833) to take the place of LA7830/32/33.
>
> -Ed-
> Tel-Tek Electronics
> Ontario-Canada
> teltek3@xxxxxxxxxxxx
>
> ----- Original Message -----
> From: "Al Gutz" <alg@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, April 17, 2004 11:31 PM
> Subject: [TechAssist] Re: JVC AV-27920 (D422) Zener
>
>
> > Ed
> > I always use la7833 to replace the 7832, same specs but slightly
higher
> > current rating. One less IC to have to stock. Also always use la7838 to
> > replace 7837.
> >
> > Al G
> > Al's TV-Electronics
> > Pembroke Ont.
> > Canada
> >
> > Ed Gaidies wrote:
> > >
> > > Nope...have none. I believe a 7830 works...am I wrong?
> > >
> > > -Ed-
> > >
> > > Tel-Tek Electronics
> > > Ontario-Canada
> > >
> > > teltek3@xxxxxxxxxxxx
> > > ----- Original Message -----
> > > From: <gulftech@xxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, April 16, 2004 4:05 PM
> > > Subject: [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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