[TechAssist] Re: JVC TV av20920 vertical problem ,then can not turn on
- From: "Trac Dang" <t8872695@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 6 Sep 2001 11:39:51 -0700
My friend.
I found problem . The cap c427(2200Uf) broken one leg between board and cap.
use esr cap meter. found open.thank again. TV is fixed.
Dang TVCR
----- Original Message -----
From: GJCHAMBERS <gjchambers@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, September 05, 2001 4:16 PM
Subject: [TechAssist] Re: JVC TV av20920 vertical problem ,then can not turn
on
>
> do you have the 24 volts to the vert output ic?
> ----- Original Message -----
> From: "Trac Dang" <t8872695@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, September 05, 2001 9:08 PM
> Subject: [TechAssist] Re: JVC TV av20920 vertical problem ,then can not
turn
> on
>
>
> >
> > Hello.
> > The problem is It is hard to turn on. The tv must be reset. but it is
> > sometimes turn on sometimes not. when it is turn on it willshut down in
> 30
> > seconds.I already changed vertical ic.same thing, no fix .one line at
the
> > center.I will change ic 703 . 5v regulator
> > (5pin) . it also hard to find this ic 78LR05.Thank you for the tip.
> > Dang tvcr
> > ----- Original Message -----
> > From: GJCHAMBERS <gjchambers@xxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, September 05, 2001 1:33 PM
> > Subject: [TechAssist] Re: JVC TV av20920 vertical problem ,then can not
> turn
> > on
> >
> >
> > >
> > > make sure you have the 24 volts to ic,
> > > the microprocessor monitors the vert for pulses and if not present
will
> > shut
> > > off the tv in error mode. then the led blinks the error code. power
must
> > be
> > > removed before error code will reset.once you get vertical problem
> fixed,
> > > set will stay on.
> > > occasionally when the vert ic shorts, it will also damage the micro as
> > well.
> > > if this happens, you will get ok picture but set will still error and
> turn
> > > off.
> > > gary
> > > ----- Original Message -----
> > > From: "Fernand Goguen" <fgoguen@xxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Wednesday, September 05, 2001 2:35 PM
> > > Subject: [TechAssist] Re: JVC TV av20920 vertical problem ,then can
not
> > turn
> > > on
> > >
> > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "tomlee" <t8872695@xxxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Tuesday, September 04, 2001 10:05 PM
> > > > Subject: [TechAssist] JVC TV av20920 vertical problem ,then can not
> turn
> > > on
> > > >
> > > >
> > > > > Seems to me that I read a previous post on JVC TV,s and the
problem
> > was
> > > a
> > > > bad yoke. I had one last year. Customer didn,t want to have it
> repaired.
> > > > Have you checked the yoke? Fernand Goguen Goguen TV Service.
> > > > > Hello techs.
> > > > > Have JVC in shop. model AV 20920. only a line at the center
> > horizontaly.
> > > I
> > > > > already changed vertical ic .no fix. Turn on unit It run about 1
> > minute
> > > > then
> > > > > relay click off.
> > > > > with led blink.Suddenly now I can not turn on any more by remote
or
> > > power
> > > > > button.
> > > > > Notice there is alot pest inside the tv . May be these pest short
> the
> > > > > epprom. Ic705
> > > > > .Any idea is appriciated. Dang TVCR
> > > > >
> > > > > Help make your TechAssist online repair tips
> > > > > database better! Submit your fixes here:
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> > > >
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> > >
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> > > with unsubscribe in the subject line.
> >
> > Help make your TechAssist online repair tips
> > database better! Submit your fixes here:
> > http://www.circuitwork.com/techassist/tip/#tips
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> > with unsubscribe in the subject line.
>
> Help make your TechAssist online repair tips
> database better! Submit your fixes here:
> http://www.circuitwork.com/techassist/tip/#tips
> To unsubscribe write to:
> techassist-request@xxxxxxxxxxxxx
> with unsubscribe in the subject line.
Help make your TechAssist online repair tips
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