[Elecraft] [Elecraft-K3] K3s throwing a "HIGH CURR" error after installing K144XV and Reference Phase Lock Option

[Clay Autery]

OK... so NONE of that worked...  So, I reinstalled everything and 
checked it 3 times...

Here is something....

What should the voltage be on Pin #1 of P95 (XV12DC) be with respect to 
chassis?

I am reading 13.75 VDC

Confirming what the picture APPEARS to be in the manual for the 
connection of the 1-wire, 3-pin connector to the 3-pin 12V power IN on 
the 2 meter module:

As you are looking at the open top of the K3s from the front, over the 
front panel....

Does the connector plug in such that the 1-wire is on "Pin #3" on the 2 
meter module (IAW, the pin closest to the PA shield/rear of the chassis?

I took the PCB out of the 2 meter module enclosure and inspected the 
pins and traces on the PCB....

Pin #1 trace appears to be a (+) line which is bypassed to ground with a 
n SMD device...  believe it was stenciled as a cap (input filtering of 
some sort)?  (Pin #1 to Pin #3 is approx. 0.2 Ohms)

Pin #2 solders to the ground plane on the bottom of the PCB. (0.1 Ohms 
or so between Pin #2 and enclosure; Open from Pin#2 to Pin #3)

Pin #3 appears to be the unfiltered (+) as it leads to a rather large 
trace on the bottom of the board leading from the connector to the 
interior of the board.

So the power wire from P95/Pin #1 goes eother to Pin #1 or Pin #3 on the 
2 meter module 12V IN.  The picture in the manual APPEARS to be Pin #3 
and it follows, as the connector has Pin #1 marked and Pin #1 is 
traditionally on the left side of a PC Board header.

I'm running out of ideas...

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/11/20 23:22, Clay Autery wrote:
>
> Update...
>
> 1) Strictly speaking, removing the RefLock option board and associated 
> SINGLE TMP cable did not "fix" anything... Still have the "HIGH CUR" 
> error.
> 2) Incidentally, IF you fire the K3s up on ANY other band (after disco 
> and reconnecting power to clear error) WITH the KXUSB cable connected 
> to the computer AND the K144XV "RS-232" port, and THEN switch from any 
> other band TO 2 meters, the status light flashes once as expected 
> (ready for firmware). BUT, the K144XV Utility will NOT connect to the 
> K144XV.  Then, of course, if you shut the K3s down while on 2M band 
> and remove the KXUSB cable from its port, then power back up....
>
> a) Powers up, status light flashes once or twice as expected.
> b) the K3s shows ANT3 briefly, and then starts trying to display the 
> power-on banner, but is interrupted repeatedly by the HIGH CUR 
> error.... which remains after the banner scroll completes.
> c) You have to power down, and disco/reconnect the power to reset.
>
> I pulled the left side of the case off ans inspected the IF IN and IF 
> out cables to verify that they are connected correctly AND still fully 
> plugged, and had NOT been pinched off.
>
> I think I will try again, with the ANT 3 cable disconnected to remove 
> the BNC cable assembly as a possible cause....  I'm reaching here now.
>
> _*Question:*_  Is there any chance that having the "grip" portion of 
> ANY of the TMP connectors making contact with the K144XV enclosure a 
> "problem"?  The ANT3 TNP board connector is set at a slightly OFF 
> angle, and the TMP outer (coax shiield) might be touching the 
> enclosure.  Just trying t figure out what is "wrong", and if it 
> anything I have control over...
>
> 73,
>
> ______________________
> Clay Autery, KY5G
> (318) 518-1389
> On 01/11/20 22:01, Clay Autery wrote:
>> Just what the title says....  I installed a new K144XV and Reference 
>> Oscillator Phase Lock Option tonight.
>>
>> When I hit the band switch to go up to the 2 meter band, it thru a 
>> HIGH CURR error.
>>
>> I followed the directions in both install manuals precisely (as 
>> appropriate for a K3s as enhanced), and double checked BOTH sets of 
>> steps after getting the error.
>> IF I disco the power, wait, reconnect, and then power up (provided I 
>> switch bands out of 2 meters), the error goes away. But if I switch 
>> back to 2 meters, it throws the error again.
>>
>> I am going to go in and remove the REFLock option and try to just get 
>> the K144XV to "work".
>> The status light flashes just as described in the manual for "normal 
>> operation".  (once or twice on power up, then OFF)
>> I've verified the supply voltage and current are "normal"  14.2 VDC 
>> at 1.47 amps (higher because the subRX was installed a couple days ago.
>>
>> Any ideas as to what is causing this "issue"? I'm missing all my 
>> weekend nets.  <wink>
>>
>> 73,
>>
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