Pages

Wednesday, October 25, 2023

Another problem solved

 I was having a problem with my Bencher Mercury paddle.

The dit paddle was being real finicky. I originally thought it was a dirty contact, so I cleaned it and it would work for a while and then stop. Then I thought maybe I just had the spacing adjusted incorrectly, so I re-adjusted that. It would work for a while, and then stop.

I turned the paddle over and looked at the connections underneath and all seemed well. My frustration level was increasing as I like to use this paddle. I have both this and my Begali Simplex Mono adjusted so that they feel like as close as I can get them to feel like touch paddles. Both are on the bench and I will use either one, depending on my mood at the time. I purchased the Mercury from Len WB2HKK who was selling it from Bart WB2HEK's estate after Bart had become an SK. Bart and I were both members of the Old Bridge Radio Association back in the day, so I like to use it in his honor. But this dit paddle problem was vexing to say the least.

It turned out the problem was my fault. It turned out to be an intermittent at the stereo plug end.

I hate soldering these things! The soldering lugs are so tiny and there's never enough space to keep the connections from interfering with one another, once you put the cover back on. I usually end up stripping off too much wire insulation, leaving too much wire exposed, and then the wires inevitably end up touching one another causing problems.  I figured this out when I ended up taking the cover off, and expanding the space between the connections a bit with my fingers. As long as the cover remained off, the paddle worked fine. When I put the cover back on, it would squeeze the connections together just enough to cause problems. Way back when, when paddles and straight keys connected to rigs with 1/4" plugs this wasn't a problem. There was enough space where I could carefully wrap two of the connections with thin slivers of electrical tape, so even if the connections were squeezed together, there was no electrical contact made.

I knew that some of the old 19" Viewsonic monitors here at work had a 6 foot cable with these type of stereo plugs pre-molded on at both ends. The 19" Viewsonic monitors are being replaced with Lenovo 24" monitors and are being picked up by an e-waste collection agency for recycling. So I dug through the e-waste bin and came up with one of the cables. Thankfully, it was none the worse for wear and brought it home. I cut it in half and replaced the whole cable assembly on the paddle. Works perfectly now and I completed the mission - recycling, W2LJ style! As a bonus, I now I have an extra 3 foot cable on hand should the need ever arise. And yes, I guess you can rightfully call me a garbage picker, now!

72 de Larry W2LJ

QRP - When you care to send the very least1

2 comments:

  1. Anonymous6:24 AM

    Good morning Larry, I have had the same issue with the tiny connections on the stereo plugs. I have tried the tiny bits of tape but that really over time did not do the thing. What I found works the best is liquid electrical tape. I brush a bit of this on and let it dry and I am good to go. So in the future if you ever need some decent electrical insulation try the liquid tape.
    73
    Mike
    VE9KK

    ReplyDelete