Re: [Elecraft] How to access fuse block?

[Steve Forst via Elecraft]

I mentioned to Dan on another list that while I did install the fuses 
myself  a few years ago, I did get sighted help to confirm the  right 
voltage was showing in the window  before powering it up.


It's too nice and too expensive a piece of gear to risk turning it into 
a smoldering pile of whatever.


73, Steve KW3A
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Re: [Elecraft] How to access fuse block?

[hawley, charles j jr]

From: hawley, charles j jr
Sent: Saturday, March 16, 2019 11:50 AM
To: DAN REID; elecraft@mailman.qth.net
Subject: Re: How to access fuse block?

You will need someone to visually see the correct selected mains voltage and 
fuse ratings to complete this job.

The instructions say to face the line cord area and with the line cord on the 
left, feel for the slot on the right and pry it up with a small screwdriver to 
open up the fuse area. then prying from the same side, pry the fuse block 
straight  out completely. The 6 amp fuses are for 240 vac and the 12 amp fuses 
for the 120 vac. The fuses are inserted with the springy end toward the rear of 
the fuse holder when it is reinserted. The fuse holder will have to be rotated 
180 degrees vertically depending on the desired mains voltage selected. The 
correct mains voltage should appear on the right side of the fuse holder block 
and be visible in the cover window when it is pressed back closed. As you 
reinsert the fuse holder press the springy ends of the fuses into the block 
with your fingers so that the block can be started into the fuse holder cavity. 
The fuse holder is inserted all the way so that it is pressed in flush with the 
area it is inserted into. Then push close the cover clos
 ed.



Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on 
behalf of DAN REID 
Sent: Saturday, March 16, 2019 10:47 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] How to access fuse block?

Greetings,
Recently purchased kpa-500 and need to know how to access fuse block to insert 
fuse.  Configuration not userfriendly for the blind.  Any directions would be 
appreciated.  Thanks, Dan

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

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Re: [Elecraft] How to access fuse block?

[Don Wilhelm]

Dan,

In my opinion, that fuse block will be difficult for an amateur without 
at least some limited sight.
First you have to use a screwdriver to pry out the block.  Inserting the 
fuses might possibly be done using only tactile sensation, but inserting 
the fuse block the right way up so the proper voltage is shown in the 
window would be difficult without sight.


If you can get the assistance of someone who has normal sight, the 
procedure is shown on pages 5 and 6 of the KPA500.  It is not difficult.


I am not certain why the fuses are not installed before shipment, but I 
always assumed it was because different fuses are used for 120 volt and 
240 volt operation, and the operator is forced to make that 120 or 240 
volt decision before he can apply power and possibly damage the 
amplifier if the wrong one is selected.


73,
Don W3FPR

On 3/16/2019 11:47 AM, DAN REID wrote:

Greetings,
Recently purchased kpa-500 and need to know how to access fuse block to insert 
fuse.  Configuration not userfriendly for the blind.  Any directions would be 
appreciated.  Thanks, Dan

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[Elecraft] How to access fuse block?

[Andy Durbin]

"Recently purchased kpa-500 and need to know how to access fuse block to insert 
fuse. Configuration not user friendly for the blind.   Any directions would be 
appreciated."

There are instructions and photos in the Owner's Manual but I found it awkward 
to work on even with normal sight.  I'd suggest asking for sighted help but if 
that's not an option send me an email and I'll try to write up some 
instructions for you to follow.   I have helped a few local ops with vision 
impairment.

73,
Andy, k3wyc
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[Elecraft] How to access fuse block?

[DAN REID]

Greetings,
Recently purchased kpa-500 and need to know how to access fuse block to insert 
fuse.  Configuration not userfriendly for the blind.  Any directions would be 
appreciated.  Thanks, Dan

Sent from Mail for Windows 10

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