[TechAssist] Re: JVC TV av20920 vertical problem ,then can not turn on

  • From: "GJCHAMBERS" <gjchambers@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 5 Sep 2001 20:16:35 -0300

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
> > > >
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> >
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>
> Help make your TechAssist online repair tips
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