[Elecraft] [K1] RF Board Resistance Checks

[Don Wilhelm]

Bob,

I don't think you have any problem if the resistance read is high and 
climbs in value (even to infinity).
The ">" symbol means "greater than" so anything greater than the 
indicated value is good and passes the test.

The resistance climbing is due to electrolytic capacitors charging up to 
the voltage used by your DMM.
If you have resistance readings lower than the value indicated, then 
that is a problem that needs to be found.

73,
Don W3FPR

On 7/26/2012 3:28 PM, Bob Molloy wrote:
> Hi,
>
>   
>
> I'm up to page 29 in the manual and doing the first resistance checks on the
> RF board. I have problems with these 4 test points:
>
>   
>
> P1 pin 16
>
> P1 pin 17
>
> U4 pin 6
>
> U4 pin 7
>
>   
>
> My DMM sometimes shows resistance on these points, then it climbs until it
> indicates an open. Sometimes it just shows infinity. I've checked for solder
> bridges, unsoldered pins, etc. Actually took pictures of the top and bottom
> of the board so I could look at them full-screen on the PC. (The pictures
> are here: http://www.kd2uj.com/Telegraphy2/default.html)
>
>