Tom,
Usually, you have to take apart the fuse holder, sometimes a difficult job
depending on how they are designed, and clean both the fuse ends and the
contact pieces in the holder. I imagine denatured alcohol, such as we used
to use to clean tape heads, would work, and sometimes just a good brisk
rubbing with a cloth will do it. When nothing else was available, I've even
been known to use a shirt sleeve. You'll probably get more expert opinions
on this from others on the list but I've been burned by it in the past with
the TS-440 so thought I'd throw it out there. I don't know if the 590 has
in-line fuses or not. The K3 does not have them. Good luck. Lou WA3MIX
----- Original Message -----
From: "tom behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, June 25, 2011 8:01 AM
Subject: Re: Low Output Power
> Lou:
>
> What's the best and safest way to deal with that issue?
>
> 73 from Tom Behler: KB8TYJ
>
> ----- Original Message -----
> From: "Lou Kolb" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, June 25, 2011 6:36 AM
> Subject: Re: Low Output Power
>
>
> Also, beware of in-line fuse holders. They can carbonize and cause all
> kinds of issues with voltage drop. Lou -- WA3MIX
> ----- Original Message -----
> From: "tom behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, June 24, 2011 9:31 PM
> Subject: Re: Low Output Power
>
>
>> These are great suggestions, Mike.
>>
>> Thanks so much.
>>
>> Will give them a try.
>>
>> What would you suggest cleaning the lead terminals and power supply lugs
>> with?
>>
>> 73 from Tom Behler: KB8TYJ
>>
>> ----- Original Message -----
>> From: "Mike Duke, K5XU" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Friday, June 24, 2011 9:26 PM
>> Subject: Low Output Power
>>
>>
>> I recently had a similar problem with one of my TS570's.
>>
>> The problem turned out to be an apparently dirty connection between
>> the power cable and my Astron 35, which caused a voltage drop at the
>> radio end of the cable.
>>
>> Cleaning both the power supply terminal bolts, and the ring lugs on
>> the power cable solved the problem.
>>
>> The output went from 70 watts to 98 as measured by the TW1.
>>
>> Someone with a multi meter can confirm the voltage as it appears on
>> the terminal bolts. The voltage can also be checked on the radio end
>> of the cable, where it is normal to see a slight drop, but not the 3/4
>> of a volt drop that I was seeing before cleaning and tightening all
>> the connections.
>>
>> Of course, shortly after going through all those gyrations, that newly
>> cleaned power supply was the one that took the lightning hit about 2
>> months ago.
>>
>>
>> Mike Duke, K5XU
>> American Council of Blind Radio Amateurs
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