[Elecraft] JIM's KPA 500 transformer [was: KPA500 Transformer]

[Don Wilhelm]

Jim,

If your KPA500 is older, there was a change to the transformer mounting 
which added a couple washers to the assembly - both under and above the 
transformer.  Contact support at elecraft.com for details and availability 
of the kit.


>>
>> On 2020-10-20 8:11, jimn4kh wrote:
>>> I wasn't my intention to resurrect an old thread. I checked the 
>>> archives before posting my message yesterday. I found a little info 
>>> but not much. Perhaps I missed it. I delayed going to the list but 
>>> Elecraft tech support is apparently really backed up because I've 
>>> gotten zero response to my emails and voicemails beyond one email 
>>> with the hum mitigation tech note I mentioned before. I thought 
>>> perhaps the larger community had a specific solution. Judging from 
>>> the widely varied responses I've gotten obviously not. I've 
>>> tightened, loosened, and moved the transformer around multiple times 
>>> with no change. I'll go get a torque wrench and try that but I cant 
>>> imagine it resolving the problem given how loud it is. Ill take it 
>>> all apart first and try the procedure once and see if it helps. I 
>>> just don't like having to solve problems through experimentation on a 
>>> $2k+ amplifier.
>>> Jim N4KH