[Elecraft] [K2] K2 frozen on startup

[P H]

Recently I'vetried to add K6XX Cw Indicator and W3FPR Fixed Audio Output to my K2 (# above 4000).

 Something went wrong when I was soldering wiresto Control Board and Front Panel Board and the result is following:

- radio freezes at startup,

- when R5 (RIT) pot is fully CW display stops with "ELE",

- with R5 pot fullyCCW display reaches  "ELECRAFT"  and I may or may not hear receiver noise(depending on the position of pots R1 (Keyer Speed) and R2 (Pwr Out).

I've checked thevoltage on Vpots line. It was 0.55V.

Vpots line goes topin 7 of the MCU (PIC18C452 microcontroller, U6 on Control Board) whichseems to be an analog input.

Thus my next stephas been removing  MCU from the socket. As a result Vpots line went up to5V.

My conclusion is that MCU must be broken.

Am I right?

If positive: Whatelse shall I check before I order a new microcontroller from Elecraft (I'moverseas and don't want to order parts one by one).

Regards

Piotr, SP2BPD