Re: KPA500 Dead

Posted by ke9uw on Jun 05, 2020; 5:38pm
URL: http://elecraft.85.s1.nabble.com/k3-High-Current-Message-on-10-meters-tp7347172p7661696.html

There’re a couple things in series with the transformer primaries that look like thermistors. Wonder about them. They’re labeled T and SL 1, and SL 2.

Chuck Jack Hawley
KE9UW

Sent from my iPhone, cjack

> On Jun 5, 2020, at 12:08 PM, Nr4c <[hidden email]> wrote:
>
> Fuses!
>
> 400 Watts “for quite a long time”?  Bet the fans were happy.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
>> On Jun 5, 2020, at 12:07 PM, Tom Berry <[hidden email]> wrote:
>>
>> I was operating on FT8  20 meters for quite a long time with my KPA500 running about 400 watts and heard a few pops (like something arching).  Heard it a few more times then the amp went off.
>>
>> Now it will not power on.  No lights, nothing.  I checked the fuse and it is OK.
>>
>> Can you tell me where to start looking?
>>
>>
>> Thanks
>>
>> Tom AAA4VV
>>
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