Part 1 Test Failure

[Gottlieb, Jonathan]

I am currently building my second K2,  #5113 (first is #4853).  I have
run into a problem with the Alignment and Test, Part 1.  When I first
turned the K2 on, I got INFO 201, but it did not switch to the default
frequency display for 40 Meters.  I turned it off and turned it back on
again, now all I get in the display is ELE and nothing else.   I don't
see this kind of problem listed in Troubleshooting.  Any suggestions?
 
Jonathan Gottlieb
WA3WDK







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[Don Wilhelm-3]

Jonathan,

I have seen a similar problem when something was shorted on the control or
front panel board   which results in excessive current drawn from the 5 volt
supply line - the result is too low a voltage to the microprocessor. (but
not a direct short to ground).

You should have measured the resistance of the 5A line to ground when you
completed the Front Panel, so check it again with the 3 boards assembled.  A
suitable point to measure is the OUT (uppermost) lead of U5 on the control
board - you should find a resistance in the 15-40K ohms range.

73,
Don W3FPR

> -----Original Message-----
>
> I am currently building my second K2,  #5113 (first is #4853).  I have
> run into a problem with the Alignment and Test, Part 1.  When I first
> turned the K2 on, I got INFO 201, but it did not switch to the default
> frequency display for 40 Meters.  I turned it off and turned it back on
> again, now all I get in the display is ELE and nothing else.   I don't
> see this kind of problem listed in Troubleshooting.  Any suggestions?
>
> Jonathan Gottlieb
> WA3WDK
>

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