[TechAssist] Re: JVC AV-27920 (D422)
- From: mebonnell@xxxxxxxxx (Max Bonnell)
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 16 Apr 2004 20:06:36 -0500
Ed if you need a LA 7833 I have 5 of them and I could send you one. (no
charge)
Max Bonnell
Bonnell TV
Robinson, IL
Sender: techassist-bounce@xxxxxxxxxxxxx From:
teltek3@xxxxxxxxxxxx(Ed=A0Gaidies) Date: Fri, Apr 16, 2004, 4:48pm
(CDT+1) To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: JVC
AV-27920 (D422) Zener Reply=A0to: techassist@xxxxxxxxxxxxx
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=AE #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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