[TechAssist] Re: JVC DVD Recorder
- From: peggs <peggs@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
- Date: Thu, 16 Feb 2006 09:06:06 -0800
thanks Jerry,
this 'loading' symptom is more like a 'booting up' sequence.It happens at
plug in,with or without a disc in the unit.
When working properly,the unit is plugged up,it starts this sequence of
'loading'(lasts less than a minute),then goes into the 'auto'
function(date/tiime/autoprogramm).
When NOT working properly,the start-up 'loading' may never stop,if it DOES
stop a VCR tape can be played fine,if a DVD is loaded already,it will play
it also(originally had DVD video problems).
But when the DVD Tray is opened,it goes back to the 'loading'.......when I
say 'loading',the unit has a blue back lit Front Panel.... this Panel
blinks on and off and the display reads 'loading'
I'll Try to give more info a little later today...
Peggs
At 07:34 PM 2/15/06, J Silverman wrote:
>Sounds like a marginal laser. Is that model supposed to play CDs? There
>would be a seperate laser for the CDs. If it would play CDs that would rule
>out a number of possible problems. Too bad there isnt a laser power meter we
>could use in situations like this. Look for a couple of little pots near the
>laser. One might be marked DVD and the other marked CD. Mark the original
>position of the DVD pot and give it a little tweak one way or the other,
>preferably the direction that decreases the resistance if you can tell, and
>see if it makes any difference. I recall some posts about the laser bias
>current being set close to the minimum for operation to prolong the laser
>life, and that a small bias increase might bring a weakened laser back into
>operation for a while. (PS- that never worked for me)
>Another possibility might be a spindle motor that wont come up to speed, but
>if it really winds up during the initial reading attempts then that is not
>the problem.
>Jerry Silverman Greentron Inc
>Mail to: greentron@xxxxxxx
>4 Newland Ave Greenville SC
>29609 864 232 3889
>----- Original Message -----
>From: "peggs" <peggs@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>;
><techassist@xxxxxxxxxxxxx>
>Sent: Wednesday, February 15, 2006 2:53 PM
>Subject: [TechAssist] Re: JVC DVD Recorder
>
>
> > The resistors were good,but I resoldered that 'area'..... unit seems to be
> > 'loading' properly now.
> > By that I mean,it takes less than a minute for the 'loading',then it goes
> > into 'auto' which is time set and autoprogramming.
> > opening the DVD tray does not cause the 'loading' to re-appear.
> >
> > As far as the DVD Video problem,I found what seems to be a bad connection
> > On the module under the DVD Mechanism.
> > After removing the Shield and verifying that I could chill the 'micro' and
> > cause the Video to go haywire,I had a closer look(magnifier)
> > at the PCB and found a bad connection at Connector 1801........the small
> > Black connector opposite the 2 white connectors.
> > It was the ground Pin. Resoldered it,at it's working for now......need to
> > let it play.
> >
> > All is well now.......... time will tell........
> >
> > Peggs
> >
> > At 09:58 AM 2/15/06, peggs wrote:
> > >the caps didn't fix it........ i'm not sure what 'loading' means.......
> > >
> > >I have found that when the unit IS working,opening the DVD Tray,sends the
> > >unit into the 'loading'
> > >symptom again......... it consistently does that.
> > >
> > >Also the Video problems on DVD,seem to be caused by a Module(looks like a
> > >micro in it) under the
> > >DVD Mechanism.I can heat/chill this Module and get a dramatic change in
>the
> > >DVD Video....it still plays the DVD fine,but the Video goes haywire....
> > >
> > >Peggs
> > >
> > >At 11:58 AM 2/14/06, Ellis Electronics wrote:
> > > >I just finished repair on the same model jvc last week. Same symptoms.
>It
> > > >was the 1200mfd @10 volt capacitor in the power supply. Sorry I don't
>have
> > > >the reference number. Hope this helps.
> > > >Ellis Electronics
> > > >Tony Zurawski
> > > >317 W. McDonald Drive
> > > >Stevens Point,Wi 54481
> > > >ellistv@xxxxxxxxxxx
> > > >715-341-8330
> > > >----- Original Message -----
> > > >From: "peggs" <peggs@xxxxxxxxxxxxx>
> > > >To: <techassist@xxxxxxxxxxxxx>
> > > >Sent: Tuesday, February 14, 2006 3:40 PM
> > > >Subject: [TechAssist] JVC DVD Recorder
> > > >
> > > >
> > > > > model DR-MV1SU
> > > > > When plugged up,unit has a Flashing Blue Lit Front Panel with the
>Display
> > > > > show "Loading".
> > > > > Sometimes the Flashing will Stop,display will go to "Auto"(which is
> > > > > probably date/time set/autoprogramming).When that's done,unit will
>work.
> > > > > More often than not,it keeps Flashing the Blue Lit Panel and
> > > > > 'Loading'....... no Functions are operable.
> > > > >
> > > > > PCB/Connenctors are not marked with Voltage measurements,so I'm not
>sure
> > > > > if
> > > > > I have any missing.
> > > > > Can't find any voltage discrepancies when the unit DOES work,as
> > > opposed to
> > > > > when it's not.
> > > > >
> > > > > I've reseated Ribbon Cables and connectors which seems to have fixed
> > > > > another symptom I had(Green flashing lines over DVD video only) when
>the
> > > > > unit DID work.
> > > > >
> > > > > I have no Service Manual,and no idea what the 'Loading'
> > > Means......... any
> > > > > thoughts or SM ???
> > > > >
> > > > > Peggs
> > > > > Peggs' Electronics
> > > > > 1519 West 2nd Street
> > > > > Owensboro,KY 42301
> > > > > 270-926-4968
> > > > > fax 270-686-7399
> > > > > peggs@xxxxxxxxxxxxx
> > > > >
> > > > >
> > > >
> >
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