Re: Disassembly of the VR-500?

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 [email protected], "david273129" <david.clench@...> wrote:
>
> --- In [email protected], "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.
>