[UK-CONTEST] FT1000MP Clarifier Problem

[Bob Henderson]

Thanks to all for the helpful comments and particularly to Fred BWP for the
reference on www.mods.dk I have done the job this morning.  As Fred
suggested, it took about 30 minutes.  The Clarifier control once again works
reliably.  BTW the encoder is mechanical not optical though the problem does
seem to be caused by a non-conductive lubricant getting between the fixed
contacts and the rotor wheel.  At Fred's suggestion, I cleaned away the
residue using Vodka.

73

Bob, 5B4AGN, G3ZEM


----- Original Message ----- 
From: "Fred Handscombe" <fredch at homeshack.freeserve.co.uk>
To: "Dave Sharred" <dave at g3nkc.fsnet.co.uk>; "Chris Burbanks"
<g3sjj at btinternet.com>; "Bob Henderson" <bob at cytanet.com.cy>;
<UK-Contest at contesting.com>
Sent: Sunday, August 01, 2004 6:01 PM
Subject: Re: [UK-CONTEST] FT1000MP Clarifier Problem


> It is debris from the spindle lubricant blocking the opto wheel
>
> See www.mods.dk for description and remedy.  MP MK5 seems toi have a
> better quality RIT encoder.
>
> Takes about 30mins to dismantle, clean and put back together.
>
> 73 Fred
> G4BWP
>
> ----- Original Message ----- 
> From: "Dave Sharred" <dave at g3nkc.fsnet.co.uk>
> To: "Chris Burbanks" <g3sjj at btinternet.com>; "Bob Henderson"
> <bob at cytanet.com.cy>; <UK-Contest at contesting.com>
> Sent: Sunday, August 01, 2004 2:08 PM
> Subject: RE: [UK-CONTEST] FT1000MP Clarifier Problem
>
>
> > If its the opto coupler; and it is intermittent, I would wonder how big
> a
> > problem it is - it could be just dust between the optocoupler and its
> light
> > source (LED) ?
> >
> > A good clean might be all it needs
> >
> > -----Original Message-----
> > From: uk-contest-bounces at contesting.com
> > [mailto:uk-contest-bounces at contesting.com]On Behalf Of Chris Burbanks
> > Sent: 01 August 2004 08:07
> > To: Bob Henderson; UK-Contest at contesting.com
> > Subject: RE: [UK-CONTEST] FT1000MP Clarifier Problem
> >
> >
> > Bob, I think it is the Opto coupler thingy, had mine replaced 2 couple
> of
> > years ago after a similar problem. Chris G3SJJ
> >
> > -----Original Message-----
> > From: uk-contest-bounces at contesting.com
> > [mailto:uk-contest-bounces at contesting.com]On Behalf Of Bob Henderson
> > Sent: 30 July 2004 11:10
> > To: UK-Contest at contesting.com
> > Subject: [UK-CONTEST] FT1000MP Clarifier Problem
> >
> >
> > Good morning chaps
> >
> > The clarifier on my 8 year old FT1kMP has started to play up a little.
> It
> > causes frequency jumps or alternately no change in frequency when the
> > control is rotated at all quickly.  I know I have seen mention of this
> kind
> > of failure in the MP before but a trawl around the web, while revealing
> > reference to it, reveals no clue about how to approach fixing it.
> >
> > Is there anyone who has suffered this problem and effected a cure who
> can
> > advise me on what is necessary.  Return to Yaesu or a dealer for service
> is
> > not a great option out here.
> >
> > 73 Bob, 5B4AGN, G3ZEM
> >
> >
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