The latest episode of the ICQ Podcast features a discussion between Martin, M1MRB, and yours truly share our experiences with troubleshooting electronic equipment. Our discussion starts at 59:40 of the podcast. I think you’ll enjoy it.

Amateur radio is supposed to be all about public service, but it doesn’t always have to include radio. At this year’s Ann Arbor Creativity and Making Expo, I ran into Dale Grover of Maker Works, a non-profit makerspace here in Ann Arbor, MI. He mentioned that he’d recently gotten a grant to repair assistive devices for people with communication and access needs.

These devices are used in schools that generally don’t have a big budget for repair. It seemed like a good opportunity for ARROW members to use their electronic skills for a good cause, so I told him that I’d try to find some volunteers to help out.

I got a great response to my call for volunteers, and yesterday afternoon, four ARROW members met at Maker Works to fix assistive devices. Shown below is Paul, KW1L; Rick, K8BMA; and Ron, K8RCF. Yours truly is taking the picture.

Typically, devices have a big switch that the user presses to play a pre-recorded message. The problems are generally easy to diagnose, and the repairs are generally simple repairs. Rick, for example, replaced the plugs on several of the devices, and Paul and Ron replaced the speakers in several of the units.

One of the devices that I tackled came with a note that read, “Won’t play or record, even with a new battery.”

As we all know, the first step in troubleshooting is to verify the problem. So, I obtained a new battery and opened the battery compartment. As shown in the photo at right, it was clear that the problem was a defective battery clip. Somehow, someone managed to tear the negative contact off the clip. I replaced the battery clip and brought the device back to life!

Overall, we probably fixed close to ten devices, including the pushbutton switches. We probably could have fixed more, but it took us some time to learn how to disassemble and then reassemble the devices.

Even though the fixes are usually simple, they can also be a bit frustrating. For example, the device that I replaced the battery clip on wouldn’t go back together very easily. It looked to me as though the screws holding the device together just aren’t long enough. Other devices had similar design issues.

Our first repair session was a fun and interesting exercise, and we plan to go back in the future. There are many more devices to fix. I asked Dale, our contact at Maker Works, if we might schedule an evening session so that our members who are still working can attend. After all, why should us retired guys have all the fun?

Having said all that, I have to believe that there are public-service opportunities like this in your community that your clubs could help with. Keep your eyes open and get your clubs involved. If there’s an expense, for say equipment or replacement parts, you can always apply for a club grant from the ARRL or ARDC. I’d be happy to help you write the proposal, if you need help.

If you do find similar opportunities, please let me know, and I’ll spotlight them here on my blog. These kinds of projects provide a real public service even if they don’t involve radio.

I was supposed to run the South Plainfield ARES/RACES Net last night at 7:00 PM local time. We hold it on the third Tuesday of the month. I went down to the basement and turned on my VHF/UHF radio that sits on the bench and ........nothing!

By rights, I should have run upstairs for an HT, or out to the car and used my mobile rig, but I still have enough Service Manager (stubbornness) in me that when something like this happens - I have to trouble shoot it - right away.

I was getting 13.8 Volts out from the power supply, but nothing at the radio. I checked the in-line fuses and they were fine. I checked the voltage at the transceiver end of the power cable and that was not fine. What the heck?

I checked all the connections at the fuse holders, made sure all the Ohm reading were zero from power supply to cable end and then hooked everything back up, turned on the radio - again nothing.  Argh!

Something told me to take a closer look at the Molex connector again. I swung the bench light over for more brightness, and sure enough, it looked like the blade on the one side looked a little bent, possibly not making contact with it's mate. I straightened it out, and snapped the Molex back together, the radio came on!

So here's the big question - how did this happen? I mean the radio was just sitting there. I don't remember moving it around or playing around with the cable in any way. I must have dome something without realizing it, because things like this don't "just happen". Do they? Molex connector innards just don't warp on their own and break contact. This one has me baffled. but it's fixed now (at least for now) so I won't beat my head against the wall trying to figure it out.

On the flip side, the Hustler VHF/UHF antenna on the car is really performing nicely. I can hear repeaters from a much greater distance than I was able to using that piece-of-crud-cheapie-antenna-that-I-should-have-known-better-than-to-ever-consider-using.  I was able to talk to Marv K2VHW on the drive home yesterday via a repeater that was a good 20 or so miles away from where I was stuck in traffic. 

The moral of the stories? Take wins wherever you can find them.

72 de Larry W2LJ

QRP - When you care to send the very least!