[Elecraft] Strange results at first test.

Jack Brindle jackbrindle at earthlink.net
Mon Dec 27 20:36:48 EST 2004


As usual, Don's advice is excellent. I would add that you should check  
to see if there might be a short between pins on one (or more) of the  
switches or traces connecting to them. It is EASY to accidentally  
splash some solder across solder traces either at the switches, the  
microcontroller or connectors. Depending on your eyesight, a magnifying  
glass may be required for checking this.


On Dec 27, 2004, at 4:31 PM, W3FPR - Don Wilhelm wrote:

> When you power on, the firmware level is being displayed.
> That does not normally occur, but it does display like you indicate IF  
> you hold one or more buttons down while powering on.
>
> Based on that info, do check to see that all buttons move freely in  
> the front panel button holes.  If you can't locate one or more tight  
> buttons, remove the front panel from the board, take off the keycaps  
> and put it together without the keycaps - just to see if everything  
> then works.  If it does, then you just have to find out why the  
> keycaps bind on the cutouts - it is difficult to position the switches  
> wrong, so you could have a bad front panel.  I had a bad one once, it  
> was punched just a wee bit crooked (only about 2 mm off from a corner  
> to corner measurement), and it was very difficult to see visually -  
> and I even had a good one to compare with.


- Jack Brindle, W6FB
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