[Elecraft] K2, distorted audio signal

[Wolfgang]

Hello,

It's time for another interim report.

After installing the two standoffs as described in the manual, I used 
the K2 for a few days, folding the tilt stand a little more firmly 
against the bottom cover. The distorted audio signal no longer occurred. 
After temporarily restoring the standoff screw connection to its 
previous state, I found that the effect could not be triggered by 
tapping the slightly loose standoffs.

It's all very confusing.

Therefore, it can be concluded that the problem with the distorted audio 
signal did not reoccur after tapping various other components and 
correctly fastening the standoffs a few times.

The exact cause of the issue remains unclear, but I suspect it may be 
due to a mechanical problem with a component, such as a relay, or a 
solder joint. The vibration caused by folding the tilt stand or tapping 
the slightly loose standoffs may have been indirectly transmitted to 
another location.

I will have to wait for the problem to occur again, and then I will 
continue trying to find the exact cause.

First of all, thank's for your contributions, including those about the 
circuit boards. I primarily use a K3, as well as a K1 and a K2. However, 
the K2 is still the device that impresses me the most in terms of 
concept and design. You can open the covers, look inside, measure 
components, and even repair or modify something yourself. Ingenious, but 
apparently no longer appropriate.

In the past, Peter Zenker (DL2FI, sk) here in DL (QRP Project) was a 
direct contact for Elecraft products who selflessly provided amateur 
radio operators with advice and support. But times are changing. The 
Elecraft mailing list is still a place where you can find expert advice.

Thank you very much for everything so far. If I find out anything, I 
will report it here.


73, Wolfgang
DL2KI

-- 

73 de DL2KI

http://www.dl2ki.de
DOK K08
(DL-QRP-AG #3247)
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