[Elecraft] KDSP2 stopped working, LED always on

[Don Wilhelm]

Brian,

U1 Pins 15-19 and 27 are not used, so whatever voltage they may be at is 
not likely to be causing any problem.

Yes, the DSPx module does draw a bit of current, so it will normally 
produce some heat.  Just how much is difficult to say via email. While 
it may be warm, it should not be uncomfortable to touch for 30 seconds 
or more.

Do you mean U3 on the main DSP2 board?  That is the clock module, and it 
is soldered in.  The only socketed device on the KDSP2 is U1.  I doubt 
that U3 would cause a problem other than bad timekeeping.

73,
Don W3FPR

On 3/21/2014 6:35 PM, Brian - N5BCN wrote:
> Hi Don,
>
> I performed a voltage test on U1 with the K2 on, DSPx module removed, coin
> cell batt installed.
>
> All pins tested ok except pins 15-19 and 27 were at 5V, the spec sheet says
> that they should be at 0 V.  It is not obvious to me if this represents a
> problem per the schematic of U1.
>
> Also, the DSPx module gets pretty warm when plugged in and the K2 is powered
> up.
>
> BTW, U3 on my DSPx module is soldered directly to the board, there is no
> socket.
>
> Thanks and 73,
> Brian N5BCN
>
>
>
>
>
> --
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