[Elecraft] KPA500 fan won't shut off

[Jack Brindle]

The KPA runs a check on the memory contents when it starts up. If something has changed that should not, then it will ask for a fresh firmware load. Since Jerry is not seeing this, then I don’t believe there is a firmware issue. 

I _am_ concerned about the issue, which is why I suggest calling tech support when they open tomorrow. This has the feel of a stuck relay on the power supply board, but I am sure my friends in Watsonville will have a better idea as to what might be happening.

73!
Jack, W6FB
Elecraft Engineering

> On Jul 14, 2019, at 11:34 AM, Bill Johnson <k9yeq at live.com> wrote:
> 
> Try reloading your saved firmware. Could be an internal error which can happen.  Reloading firmware, preferably one you have saved will correct the error.
> 
> 72 & 73,
> Bill
> K9YEQ
> FT’er for K2, KX1, KX3, KXPA100,  KAT500, W2, etc. 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of jerry
> Sent: Sunday, July 14, 2019 1:23 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] KPA500 fan won't shut off
> 
> After yesterdays contest, I noticed this morning that the KPA500 fan was still running at a high speed even though the amp had been turned off all night by using the front "on" button.  The only way the fan stops running is if I turn the amp on with the front switch or if I shut the amp off by using the rear on/off switch. Menu setting for Fan is set to normal. Any ideas?
> 
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