Re: [Elecraft] K1: Inp Menu Item Pdn Only Allows Dits

2008-02-14 Thread Don Wilhelm
I can guess at 2 possibilities - one is that there was something sticky 
on the shell of that mono plug which adhered to the wiper in the paddle 
jack - it only takes a bit of something like the adhesive from 
electrical tape to do that. 

The second is that somewhere along the dash signal line, you have a bad 
solder connection that made contact when it was touched.  If you have 
trouble again, I suggest checking the schematic for everything connected 
to the dash signal (including connectors) and re-flow the solder.


73,
Don W3FPR

MGFoster wrote:

I turned on the K1  tested to see if the problem still existed - it
did.  Turned off the K1  unplugged,  exposed the bottom of the RF
board.  Powered up  inserted a bent component lead into the Dits 
Ground - OK.  The same on the Dash  Ground - OK!  Plugged the paddles
back in  it worked OK.

OK, so what happened there?

Thanks,

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Re: [Elecraft] K1: Inp Menu Item Pdn Only Allows Dits

2008-02-14 Thread crstrode

MGFoster Wrote:
I turned on the K1  tested to see if the problem still existed - it
did.  Turned off the K1  unplugged,  exposed the bottom of the RF
board.  Powered up  inserted a bent component lead into the Dits 
Ground - OK.  The same on the Dash  Ground - OK!  Plugged the paddles
back in  it worked OK.

OK, so what happened there?

//

This is very similar to my experience building K1 #2476 last month.  First
try with the paddle resulted in strange behavior - can't recall the exact
details, but very similar to your experience.  After I unplugged and
re-plugged a time or two all was well.

I also vaguely recall a similar phenomenon when K2# 3777 was built.

It almost seems like a micro-controller initial startup hiccup.


I'm guessing the notoriously spooky key jack may have had some debris, poor
mechanical alignment, stiff contacts, etc.

I was particularly careful when soldering the key jack to the board - just
enough heat to flow, but not melt the flimsy plastic housing.  I've
experienced more than one failure of these (both K1 and K2 key and headphone
) jacks so I always keep a spare on-hand.  Both rigs are woking A-OK (at the
moment) but I do try to limit the in-out cycles as much as possible to delay
the inevitable jack failure.

Carl
WA7CS




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Re: [Elecraft] K1: Inp Menu Item Pdn Only Allows Dits

2008-02-14 Thread Joseph M. Durnal
I'm in the process of building a K1, I'll be sure to check the key
jack carefully.  I guess it would be best to wire the straight key,
which is all I use for now, to a stereo plug anyway.

73 de Joseph Durnal NE3R

On Thu, Feb 14, 2008 at 11:22 AM, crstrode [EMAIL PROTECTED] wrote:

 MGFoster Wrote:
 I turned on the K1  tested to see if the problem still existed - it
 did.  Turned off the K1  unplugged,  exposed the bottom of the RF
 board.  Powered up  inserted a bent component lead into the Dits 
 Ground - OK.  The same on the Dash  Ground - OK!  Plugged the paddles
 back in  it worked OK.

 OK, so what happened there?

 //

 This is very similar to my experience building K1 #2476 last month.  First
 try with the paddle resulted in strange behavior - can't recall the exact
 details, but very similar to your experience.  After I unplugged and
 re-plugged a time or two all was well.

 I also vaguely recall a similar phenomenon when K2# 3777 was built.

 It almost seems like a micro-controller initial startup hiccup.


 I'm guessing the notoriously spooky key jack may have had some debris, poor
 mechanical alignment, stiff contacts, etc.

 I was particularly careful when soldering the key jack to the board - just
 enough heat to flow, but not melt the flimsy plastic housing.  I've
 experienced more than one failure of these (both K1 and K2 key and headphone
 ) jacks so I always keep a spare on-hand.  Both rigs are woking A-OK (at the
 moment) but I do try to limit the in-out cycles as much as possible to delay
 the inevitable jack failure.

 Carl
 WA7CS




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 http://www.nabble.com/K1%3A--Inp-Menu-Item-Pdn-Only-Allows-Dits-tp15468892p15481259.html
 Sent from the Elecraft mailing list archive at Nabble.com.


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Re: [Elecraft] K1: Inp Menu Item Pdn Only Allows Dits

2008-02-13 Thread MGFoster

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Brett Howard wrote:

What happens if you use the test points next to the connector?  Open

the box

up and just use a paper clip or test lead to short them to the ground

pad

there and let us know what happens then.



I turned on the K1  tested to see if the problem still existed - it
did.  Turned off the K1  unplugged,  exposed the bottom of the RF
board.  Powered up  inserted a bent component lead into the Dits 
Ground - OK.  The same on the Dash  Ground - OK!  Plugged the paddles
back in  it worked OK.

OK, so what happened there?

Thanks,
--
MGFoster:::mgf00 at earthlink decimal-point net
Oakland, CA (USA)

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