[Elecraft] K1 Band Display Problem

[EricJ]

K1, SN 1976 with 1.09E firmware, 4 band module and ATU. It's been 
working flawlessly since I built it around 2005 or so.

It works fine on receive and transmit on all bands except that when 
changing bands it displays 7, 10, 10, 21. Though indicating 10 mhz, it 
works fine on 14 mhz, but the display is obviously wrong. Probably a 
solder joint that decided not to work, but the LCD and added backlight 
obscure pins on the firmware socket. I've resoldered pins on the LCD and 
the firmware socket that I can reach. I've also removed the firmware 
chip and reseated it. Problem surfaced suddenly on a camping trip a 
couple weeks ago.

Am I at least in the right area? If so, the next thing I'd do is try to 
desolder the LCD and touch up solder joints on the firmware socket.

Eric
KE6US