The remaining tin-plated connectors are not a problem because both the pins
and sockets are the same metal.
The problem with the replaced connectors is that the sockets were tin-plated
and the pins were gold-plated (maybe the other way around). Over time the
dissimilarity of these two metals develop some coating that gradually can
cause intermittent electrical connection. The fix is to replace these
locations with gold-plated connections.
Ed W0YK
_______________________________________________________________
Dave KD1NA wrote:
I have an old K3 ( Serial # 934 ) and was starting to be plagued by
interconnection problems inside of my K3 caused by the tin plated plugs.
After contacting Elecraft I received 2 connector kits. One for the 100 watt
power amp connections ( KPA3 ) and one for the front panel ( J30 and 35 ).
Since I installed these gold plated pluge my interconnection problems seem
to have gone away. I am still concerned about the remaining tin plated
plugs in my K3 but Elecraft indicated that there has been no known issues
with these remaining tin plated connectors.
My question is has anyone who owns an old K3 experienced any other tin
plated pin issues with internal K3 connectors other than the ones that
Elecraft addressed?
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