Hi All,
To wrap up and put in the mail list archive, my K2 issues have now been
solved. Don, W3FPR suggested looking at U6, U7 and U8. I changed U7 whilst
the radio was apart and resoldered U6 and U8 to resolve the issue. AE6QL
also pointed out that there may be an issue with the socket for U6,
Hi,
I have a K2/100 on my bench that is behaving strangely and I’d like some
advice. This has the SSB board and Z1 buffer amp and 2.04P firmware.
That radio hasn’t been used for some time and I am told it was stored in an
attic space so will have been subject to temperature swings. Initial
Steve,
That is truly erratic behavior. It sounds like either the EEPROM is
losing its data, or is having an addressing problem (the menu settings
are stored in EEPROM).
So in this particular case, I recommend you record the menu setting that
you care about and do a Master Reset (hold the
...@mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Wednesday, April 17, 2013 8:42 AM
To: STEPHEN BUNTING
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K2] Forgetful K2 filters
Steve,
That is truly erratic behavior. It sounds like either the EEPROM is losing
its data, or is having an addressing
Tom,
There is no battery - this is EEPROM, not battery backed RAM.
73,
Don W3FPR
On 4/17/2013 10:34 AM, Tommy wrote:
Just as an additional suggestion, since the unit has been in storage for a
period of time, maybe also change the battery that the EEPROM needs to
maintain its stored
Fred,
Only U6 is socketed, all the rest of the Control board ICs are to be
soldered.
If the builder followed instructions, the EEPROM U7 would be soldered
directly.
You are quite correct, sockets sometimes give trouble. Usually removing
U6 from the socket and re-inserting it will wipe the
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