I picked up a new to me YouKits TJ2B last weekend. I liked these some years ago but it seems YouKits are no more and have been overtaken by other SDR radios from the likes of Xiegu and others. Renowned for poor speaker volume this one was beyond a joke as you needed headphones to hear anything coming out of it. In hindsight it was a gamble as I could not tell if the speaker was the issue or if the receive section was deaf.
After taking it apart and doing some research I found a section in the TJ2B build instructions on this being an issue caused by cold solder joints on the mini transformers T1, T2, and T3. Problem was that the build instructions were for an older model and the PCB was different. I reflowed them anyway and problem solved with an actual sound coming out of the speaker for a change. I then proceeded to stuff up the assembly 4 times and could not understand why I did not have access to all of the tuning options. Well after taking it apart again I finally noticed I had put a screw through the ribbon cable from the main tune control. With that repaired, normal service was restored and receive was fine. It currently puts out a 3W carrier and I have no confirmed contacts with it yet even with local hams assisting in testing. We can hear each other but signal is so low as to be unintelligible and barely even able to tell when the over has ended. More testing to come.
