[Kenwood] TS-820 bandswitch coupler replacement?

[Clif Holland]

Replacing the TS530/830 coupling is easy, takes about 15 min.

Clif Holland, KA5IPF
AVVid
Authorized Kenwood and Icom Service Center
816 W Shady Grove Rd
Irving, TX 75060

www.avvid.com

1-800-214-5779
972-870-0630 (Local)
----- Original Message ----- 
From: "AA6DX" <aa6dx at arrl.net>
To: "Tom McDermott" <tom.mcdermott4 at verizon.net>; <kenwood at mailman.qth.net>
Sent: Monday, June 07, 2004 7:34 PM
Subject: Re: [Kenwood] TS-820 bandswitch coupler replacement?


> TS-830 =  same problem .. If you order one replacement, order 2 ... then
> tape it, whatever inside the rig so as to quickly find the next time
around,
> which, if the rig is kept around long enough,  will come ... trust me!  I
> tried the ty-wrap routine, no good ... but something that will work, is
the
> epoxy  JB Weld .. just be careful not to get the goo in the shaft's hole,
or
> ....oooooops!
> 73 --- Mark, AA6DX
>
> ----- Original Message ----- 
> From: "Tom McDermott" <tom.mcdermott4 at verizon.net>
> To: <kenwood at mailman.qth.net>
> Sent: Monday, June 07, 2004 5:00 PM
> Subject: RE: [Kenwood] TS-820 bandswitch coupler replacement?
>
>
> Managed to get a tywrap around the coupler, and got it good and tight. Not
> enough tension to grip the shaft, unfortunately, and a real bear to get
back
> out. The set screws are larger than 0.050" but smaller than 0.0625" so
they
> must be metric. Unfortunately the nylon coupler is split at both set
screws,
> so there's nothing for them to bear against.
>
> It's not obvious how to get the old coupler out. The service manual does
not
> list the part number, nor show any drawings of how the shaft is aligned,
> indexed, or removed. I assume the front panel has to come off, then the
> secondary shaft bearing has to be removed and the shaft slid out through
the
> front. Even if the shaft is completely pulled out, it still does not look
> like there would be enough room to get old coupler off.
>
> Since it's not shown in the service manual, is this part even considered
> servicable?
>
> -- Tom
>
>
>
>
>
> -----Original Message-----
> From: Clif Holland [mailto:clif at avvid.com]
> Sent: Monday, June 07, 2004 7:20 AM
> To: Tom McDermott
> Subject: Re: [Kenwood] TS-820 bandswitch coupler replacement?
>
>
> It's not easy.
>
> Clif Holland, KA5IPF
> AVVid
> Authorized Kenwood and Icom Service Center
> 816 W Shady Grove Rd
> Irving, TX 75060
>
> www.avvid.com
>
> 1-800-214-5779
> 972-870-0630 (Local)
> ----- Original Message ----- 
> From: "Tom McDermott" <tom.mcdermott4 at verizon.net>
> To: <kenwood at mailman.qth.net>
> Sent: Sunday, June 06, 2004 12:21 PM
> Subject: [Kenwood] TS-820 bandswitch coupler replacement?
>
>
>
> The white plastic bandswitch coupler in my TS-820S has broken at one end
> (cracked so that is cannot grip one of the shafts tightly). It is inside
the
> finals cage, and connects the end of the bandswitch rod to the final tank
> switch. This renders the radio inoperative.
>
> It appears that the coupler was the first part used in the radio assembly,
> and the entire readio is then constructed around that coupler! With the
> finals removed and cage open, it's possible to touch it with a small
> screwdriver, but barely. It's probably a lost cause to replace it, so
repair
> efforts might aim towards a compression-band to compress the coupler end.
I
> tried a small stainless-steel hose clamp, but the screw protrusion on the
> clamp is too tall, and does not fit in the space around the coupler.
>
> Has anyone sucessfully repaired one of these? The service manual doesn't
> give any help here.
>
> -- Tom, N5EG
>
>
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