[TechAssist] Re: GE VCR VG2021 - ZD6 Shorting
- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 26 Mar 2004 17:23:34 -0000
Yeah, that one shorted too when I pulled the SMPS and attempted to
troubleshoot it on the bench, its board location is ZD5. Could that
zener have caused my problem?
David Lessard
Alexandria Electronics
Ontario, Canada
mr_fixit@xxxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Tel-Tek
Sent: Thursday, March 25, 2004 10:17 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: GE VCR VG2021 - ZD6 Shorting
Dave;
Check 18 volt zener. D14 I think.
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
----- Original Message -----
From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, March 25, 2004 4:55 PM
Subject: [TechAssist] Re: GE VCR VG2021 - ZD6 Shorting
> David,
> Normally those zener diodes are in the feedback loop and
normally
> when they short..Theres a problem on secondary, as its job is to
monitor
> secondary and report back to primary.. to regulate. Don't have a
print on
> that model, but if its one of those plug in supply's there are usually
a
lot
> of bad caps in the secondary 1000- 330 caps that fail also a NP cap..
> Maybe this will help..
> Bob,
>
> Bobs TV Worcester, ma
>
> woodman1@xxxxxxxx
>
> Main 508-853-1482
> Fax 508-853-1480
> ----- Original Message -----
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, March 26, 2004 10:44 AM
> Subject: [TechAssist] GE VCR VG2021 - ZD6 Shorting
>
>
> > This VCR was in for service a few weeks ago, SMPS was dead, replaced
the
> > following:
> >
> > Q1 - C4418
> > Q2 - ECG382
> > D02 - IN4148
> > C09 - 22uf/16v
> >
> > Then the display was blinking when powered up, found ZD6 leaky,
replaced
> > it with 33V/1W zener (I think this is supposed to be a 43V zener?),
> > anyway, ZD6 blows within a minute of VCR being powered up. What
could be
> > causing this? What circuit(s) does this supply?
> >
> > Thanks in advance,
> >
> > David Lessard
> > Alexandria Electronics
> > Alexandria, Ontario, Canada
> > mr_fixit@xxxxxxxxxxxx
> >
> >
>
>
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