I am not sure what is is happening with this unit. My K2 [#4690] is
at the stage where I am adding the KI02.. Up to this point I have only
had one "gremlin".. While going thru the filters last week, the radio
locked up on 40M ..all other bands were OK, but on 40 the freq was
locked. I posted here and was advised that I shoud do a hard reset,
which I did and which made every thing right again
On Thursday, I finished the Ki02 and went thru the tests.. Would not
communicate with the K2..after about 6 hrs of checking every joint etc.
I discover that the L3 [100 uh rfc] was open.. I replaced ti and ..wow
every thing worked..The K2 and the laptop talked like old friends..
Today I was ready to do the permanent install of the KI02 in the K2. I
thought I should just recheck every thing, before I put it back
together.. That wa s at 2PM today. Again they wouldn't talk to each
other After cking soldering ..wiring .. and voltages for 3 hrs.. I
found that the Voltage on PIN 1 of J2.wasnt there [ 5V].. Traced back to
MCU on control board and found there was NO 5Von U6 [MCU PIN 25]..So I
did a nother hard reset and all is well again.
Do I have a flaky MCU?.. A m I doing something flaky? Could this
continue to be a problem?
I need some input.. Let me kow what you think. I dont think it is too
good to be reseting the MCU all the time..
Doc K8RR.
.
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