[TechAssist] Re: JVC TV av20920 vertical problem ,then can not turn on
- From: "Trac Dang" <t8872695@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 5 Sep 2001 17:08:41 -0700
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
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> >
> > Help make your TechAssist online repair tips
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>
> Help make your TechAssist online repair tips
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