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 u
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
Brian,
Unless you unseated the DSPx module (the one on top), it is not likely
that you did anything overt to create that problem. Treat it as a new
problem that just happened to appear.
It could be a solder connection that was marginal, or it could be that
one of the pins of the KDSP2 U1 IC
Perhaps read voltages in manual and compare to
what you measure. Note the conditions under which
those voltages were measured.
73, Phil w7ox
On 3/21/14, 12:38 PM, Brian - N5BCN wrote:
The KDSP2 manual's troubleshooting sections says to "check U1 and D3" but
I'm not sure what I'm supposed to b
My KDSP2 has been working fine up until today when I cracked open the lid of
the K2 to perform a VFO dial calibration. At some point during the process,
I noticed that the KDSP2's LED was staying on. I figured I must have bumped
something, so I tried cycling the K2 on and off and re-seating the K
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