Re: Disassembly of the VR-500?

Oh, I've tried this several times, no luck. I have one low-resolution
pdf schematic, but it is to bad and I'm looking for the schematics and
PCB component plot.
Thanks, anyway.

-Eckhard

--- In [email protected], JIM GRIFFITHS <bigriff@...> wrote:
>
> google it    just search for ::  VR 500 service manual free
download I did and got one in pdf but lost it when HD crashed 
> Jim
> 
> 
> --- On Sat, 20/9/08, eckrot <eckrot@...> wrote:
> 
> From: eckrot <eckrot@...>
> Subject: [VR-500] Re: Disassembly of the VR-500?
> To: [email protected]
> Date: Saturday, 20 September, 2008, 1:40 PM
> 
> 
> 
> 
> 
> 
> Hello,
> 
> I did disassemble my VR-500 several times, for example I changed the
> WFM filter to 110kHz for WFM broadcast DX. So, if you are familiar
> with SMD soldering, it should be no problem in general to do it. You
> need to unsolder some shielding and the antenna connector, and also 
> to unscrew the knobs from the chassis (you need special tooling for
> that). The speaker is not connected by wires, there are kind of
> elastic metallic stripes pressing on solder pads on the last PCB - so
> you need to unmount all. 
> If you are not experienced in such things - don't try it!
> 
> Another question: does anybody own a a VR-500 service manual? I would
> like to try to improve the 0-30MHz input stage, I have some ideas how
> to do it but unfortunately I do not have a readable schematic. Could
> anybody help, please?
> 
> -Eckhard
> 
> --- In VR-500@yahoogroups. com, "david273129" <david.clench@ ...> wrote:
> >
> > --- In VR-500@yahoogroups. com, "jzagar53" <jzagar53@> wrote:
> > >
> > > How tough is it to disassemble the VR-500 to get down to the
speaker 
> > > level? I need to fix the speaker contacts that apparently become 
> > > intermittent due to oxidation causing audio to cut in and out. Is 
> > > desoldering required to get the sub-boards out?
> > >
> > Hi, I would not even think about trying to take the radio apart. As 
> > the other member said just a little switch cleaner on the plug and 
> > work it in and out. You may have to do it a few times but it
should do 
> > the trick.
> > 
> > Regards
> > 
> > Dave.
> >
> 
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