Tom,
I suggest we get the resistance readings straight before applying power.
Were the resistance readings made with the boards separated? They should
have been.
First check Control Board U3 pin 8 (with the board removed). Is 1.009
mean 1.009k or 1.009M? If your DMM is autoranging, you
Don, 'could not get a reading' means my multimeter showed 0.L (or infinity),
I switched to a large 13.8 volt power supply-now screen reads 13.5v .04
amps...I did some re-soldering again today and now most of the digits on the
display light up completely except for the digit above the XIT on
Hello Don, on power up I am still getting Info 080 message and garbled
frequency display (and no relays are clicking), alot of the menu functions
show up correctly though, I checked the following as you indicated: RF Board
U1 is oriented correctly and no pins are bent, jumper is set for INT on
Tom,
Did you remove the Front Panel board and the Control Board before making
those resistance measurements. Those resistances are for the board
alone after its assembly. When plugged into the RF board, the
measurements can be different.
Does U1 still get hot?
73,
Don W3FPR
On 3/3/2013
Tom,
Please explain the could not get a reading - does that mean your DMM
reads zero ohms or infinity? Infinity is the same as you see when the
probes are connected to nothing.
73,
Don W3FPR
On 3/3/2013 7:32 PM, Tom Fuller wrote:
Hello Don, on power up I am still getting Info 080 message
Hello Don, yes I figured I had to have the boards separated so I did that
with the power off, yes U1 is still getting hot, I looked over the solder
connections and all appear to be good, a few days back I did get a scroll
though of all the bands with relays clicking with band switch buttons
Tom,
In those instances, the details of the debugging were likely taken
off-list. I cannot recall those exactly, but I believe they were resolved.
When doing off-list debugging, I leave it up to the indivudual to report
back to the list with the resolution. Some do and some do not. If
Tom,
RF Board U1 should not get hot. Make sure it is oriented correctly.
The notch goes toward the left side panel.
If you plugged it in backwards, cross your fingers that it is still OK.
Error 080 is an indication that the main microprocessor cannot
communicate with other microprocessors
Hello, I am assembling my Elecraft K2 Radio (serial # 7421) , I made it up to
page 43 of the manual, earlier today I was able to get the info 201 to show
on display as on page 43 and frequencies showed ok/bands changed on display
ok also but with info 080 message shown , the tuning dial did not
Hello,
I posted this a few days ago. I will cut and paste here again.
I'm in the middle of building a K2, S/N 6412.
While doing the Alignment and test Part 1, I had a couple of readings that
were not in specs.
1. Page 48, Setting the AGC Threshold, the manuals calls for adjusting R-1
for a
DW,
First, the 7808 will work, but the stock regulator is a low dropout
type, so if you replace it with a 7808, the power supply voltage that
will create proper operation will have to be a bit higher. That may
make no difference if you are operating from a home station power
supply, but if
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