In the US, I have found arrow.com to be quite good.

#qcxmini #magicsmoke #parts

Yes ^^^^ I did not mean to say don't start with measuring the DC voltages. Definitely do! If you don't feel like doing any troubleshooting, just buy a few NE5532's at your favorite vendor and replace

#alignment

Check the troubleshooting video in my sig below, and also check Hans' own QCX troubleshooting video. If you're not getting any noise and no oscillator audio, then IC8/9/10 are suspect. It'll take some

#alignment

I too think that there is merit to jumping in the deep end- but only to a point. I've been soldering on things since I was about 10 years old- not consistently, not good at it-, but doing it. Somebody

Congrats! Sounds like you had as much fun as I did. It sure is satisfying when you fire it up and it works. Have fun with your new rig :)

Indeed, this is a problem with power supply, but the problem might not BE the power supply. The manual shows how you can use one of the buttons to produce CW, and this works nicely. It will allow you

#u3s

Ni!

#u3s

Many other U3S's are out there working just fine, and I'm sure yours isn't far off from it. You sound very frustrated, which usually impairs further troubleshooting. My suggestion: Walk away from it f

#u3s

Hey Dan, Congrats on the fix! Fantastic! Yes I had C11 that was too low as well, and so I'm glad my little trick there was able to help. These sure are neat little radios.

#qcxmini

It's been mentioned before, and I mentioned in in my article that I linked as well, but it's worth saying again: It's subjective. The right tool for the job is the right tool for the job, that's all t

I've been around this block several times, having used Windows and Linux for years and years. If anybody cares what I have to say about it, please read: https://miscdotgeek.com/why-windows-10-is-my-de

Congrats on getting it working! :)

I'm sure others will chime in, but sounds to me like you've found the culprit. I'd check R35 and its path to 5v, and also check that R34 is intact, and that there is continuity where it should be (and

This means that the processor can't talk to the si5351 chip, which is the little tiny one right next to the crystal (or TCXO). Time to get it under magnification and make sure there are no solder whis

#17m

Hi everyone, First I want to say thank you for all the help that was given to me by this group. I wanted to try to wrap what I learned into one concise article that might help others if they run into

#qcxmini

I agree with you on this one, Fred. The shotgun approach to this issue is probably the simplest way to solve it, save for the more difficult soldering.

I replaced *just* IC7 and had no issues with IQ balance. That would suggest that your IC7 was not working.

Typically you don't have to mess with the number of turns on a 40m. Even on my 20m, I just had to move the windings around a bit to get 5W. You can even do it while transmitting. Just use a plastic or

I actually used similar dupont connectors when troubleshooting my QCX Mini just because I got tired of juggling boards around. It was convenient, and I almost included it in my mini tips (see sig) but

Congrats on the fix! SMD soldering isn't too bad, is it. I find a SOIC8 WAY easier to repair that a DIP8 that's unsocketed. I use the flood method too which I documented on my YT channel. It works rea