[Kenwood] Passband Relays in TS-430S

[Joe]

Heres the official fix from Kenwood,
http://www.qsl.net/wb4kdi/Kenwood/TS-430S/Service%20Bulletins/asb0902.html

But while this is good to know, it still isn't answering my question of 
scanning and all the relays clunking.

Joe WB9SBD

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On 1/28/2015 1:13 PM, Rob Stampfli via Kenwood wrote:
> I've never tried this fix on mine, but haven't had a problem either.
> OTOH, I've never heard of anyone claiming that their 430 was damaged
> by performing this procedure.
>
> The filters and relays in question are used for both receive and
> transmit, and they cover the following ranges:
>
>   1.5  -  2.5 Mhz        /* 160m */
>   2.5  -  4.0 Mhz        /*  80m */
>   4.0  -  6.5 Mhz        /*  60m */
>   6.5  - 10.5 Mhz        /*  40m */
> 10.5  - 16.0 Mhz        /*  20m */
> 16.0  - 23.0 Mhz        /*  15m */
> 23.0  - 30.0 Mhz        /*  10m */
>
> Pushing 100W through these relays usually is sufficient for keeping
> them clean.  Note that only the 4.0 - 6.5 Mhz filter has no ham band
> that the 430 is capable of transmitting on by default, so this "band"
> is the one that usually gets dirty first.  Open your rig up for 60m
> and transmit regularly on all the bands (even if only into a dummy
> load), and you'll probably never have a problem with your relays
> getting dirty.  But put your 430 on the shelf for 10 years, and
> you'll likely have to go through a relay cleaning procedure before
> you can use it reliably again.
>
> YMMV,
> Rob / KD8WK
>
> On Wed, Jan 28, 2015 at 09:57:34AM -0600, Joe wrote:
>> Now I do not know if this method suggested for the 430S would fix
>> your radio or not.  Maybe the Pro's here on the list can say?
>>
>> I know as simple, and scary sounding as that fix is. for this 430S
>> it was incredible!!!  10 Meters was intermittent Like Robert said
>> below here, sometimes it worked some times not.  And as an also
>> SWLer The 49 Meter bad absolutely did not exist! It was sooo bad
>> that not a single carrier  from those  megawatt broadcast stations
>> couldn't even be detected in SSB mode it was that deaf.
>>
>> But after running that fix, WOW 10 meters works great all the time
>> now, and 49 meters has signals that actually peg the meter
>> sometimes! What 90 db over S9?
>>
>> I'm just worried about scanning with this and the relays constantly
>> clunking around.
>> On 1/28/2015 8:44 AM, Robert Rode wrote:
>>> ..Joe, no addition to ur post, however you have brought up a
>>> condition exactly the same as my Kenwood TS-140-s,..it goes right
>>> out of business when I switch bands, and sometimes tapping on the
>>> cabinet will re-activate it,..also when going from transmit to
>>> receive,..others say only cure is to replace those relays....just
>>> saying,...Robert/W9ESX..
>>>
>>> On Wed, Jan 28, 2015 at 8:35 AM, Joe <nss at mwt.net
>>> <mailto:nss at mwt.net>> wrote:
>>>
>>>     OK, I did the 13.8 volt and resistor cleanup on these relays in mu
>>>     TS-430S and it made this a whole new radio.
>>>
>>>     Now they say it's lack of use that causes the corrosion.
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