[TechAssist] Re: JVC - VCR - HR-S4700U - P.S. Problems
- From: "David Lessard" <mrfixit@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 13 Jun 2003 14:52:33 -0400
Yes, metal box in the corner rear corner of the unit. I'll try unloading the
+5 and -28 volt lines to confirm which is loading down the power supply.
Thanks for the tip Jerry, I'll let you all know how I make out.
David Lessard
Alexandria Electronics
Ontario-Canada
mrfixit@xxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of J Silverman
Sent: Friday, June 13, 2003 12:34 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: JVC - VCR - HR-S4700U - P.S. Problems
JVC fired us just before that model came out and their manuals were too
expensive to buy so I just borrowed them when I needed one or crossed them
over to Zenith or, later, Philips. Does this model have the power supply in
a metal box at the left rear of the unit? Does anyone know the cross to
Zenith or Philips? I have all those manuals.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, June 12, 2003 10:04 PM
Subject: [TechAssist] Re: JVC - VCR - HR-S4700U - P.S. Problems
> David,
> I have a schematic for HRS3900, not sure if it is close.
> This shows CN1 on the AC head and main board.
> I'll see if I can email you just this part as the whole thing is too
large.
>
>
> Jeff Dougherty
> Intrepid Video TV/VCR
> 263 S Front St
> Steelton PA 17113
> fax...717-564-4952
> www.intrepid-video.com www.tech-repair.net
>
> ----- Original Message -----
> From: "David Lessard" <mrfixit@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, June 12, 2003 9:21 PM
> Subject: [TechAssist] Re: JVC - VCR - HR-S4700U - P.S. Problems
>
>
> Load, drum, capstan, all work. As I said in my previous post, this VCR
> functions (but with no display) when connector CN1 is disconnected from
> power supply board. What I need is information on this connector, where
does
> it go? It looks like over to RF modulator, but I'm not sure. What ever
this
> connector is feeding is the problem. Could someone with a schematic please
> confirm this. Thanks in advance.
>
> David Lessard
> > Subject: [TechAssist] JVC - VCR - HR-S4700U - P.S. Problems
> >
> >
> > > VCR came in dead, found information referring to C16 & C19, they both
> > > checked good and weren't replaced. I can get the VCR to come alive
> (load,
> > > play, ff, rr, etc.) but with no display when connector CN1 on the SMPS
> > board
> > > is disconnected. My question is, what circuit does CN1 supply? I
didn't
> > have
> > > the time to check if the CABLE in via the RF modulator was working.
The
> > > above results were via RCA A/V jack to a monitor. A partial scan of
the
> > > circuit supplied by CN1 would be very helpful. Thanks techs.
> > >
> > > David Lessard
> > > Alexandria Electronics
> > > Ontario-Canada
> > > mrfixit@xxxxxxxxxxx
>
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