[Elecraft] KPA-500 AMP Question

[Ken Wagner K3IU]

Oops... sorry, Dave. I see now that you 
said that the interference is with the 
head of the screw which is correctly on 
the inside of the bottom cover. I have 
assembled 2 of the amps and have noticed 
this problem.
73,
Ken K3iU

On 3/27/2012 3:08 PM, Ken Wagner K3IU 
wrote:
> I think that you have put the screws 
> in the wrong way. See page 8 of the 
> Assembly Manual, particularly the bold 
> type sentences.
> 73, Ken K3iU
>
> On 3/27/2012 2:42 PM, Dave Anderson, 
> K4SV wrote:
>> Hi All,
>>
>> Still assembling my KPA-500  SN 436
>>
>> I am at the stage of installing the 
>> transformer and actually have 
>> installed the transformer. Upon close 
>> inspection it appears that the front 
>> left (as viewed from the front) foot 
>> held to the chassis bottom using pan 
>> head screws may cause damage to the 
>> transformers windings.  The head of 
>> the screw closest to the transformer, 
>> is directly under the transformer and 
>> when the transformer is torqued down 
>> it rides on the screw.  The thin 
>> clear plastic wrap is the only thing 
>> keeping the wire from contacting the 
>> screw head.  Yes the transformer is 
>> up against the bumpers equally and 
>> installed per the manual rev d.
>>
>> My plan was to take this amp on 
>> DXpeditions but it appears it would 
>> not last one trip before the winding 
>> breaks through and touches the screw.
>>
>> Would anyone know if there is some 
>> preventative measures to keep the 
>> transformer safe?  It would be a 
>> shame to find the transformer/amp 
>> damage only to have it explode as you 
>> plug it in upon arrival to some rare 
>> DX place.
>>
>> At the very least these two screws 
>> should be flat head screws and have 
>> countersunk holes.
>>
>> Suggestions?
>>
>> Thanks in advance,
>>   Dave Anderson, K4SV
>> Tryon, NC
>>   828 777-5088
>>   www.K4SV.com
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