Hi everyone, is there a Yaesu rig user in the house?
I just got this beat up FT-2900R for cheap. It had a bunch of problems that I managed to fix, but one remains without a solution in sight.
For now, almost everything works normally, except for the fact it’s showing considerably less voltage than the supply. During the start-up, it shows the voltage exactly as supplied only for a brief moment (long enough for me to read it) before droping around 3-4 volts. As the result, my transmit power gets cut-off due to the low voltage.
I even tried changing all the thru-hole caps, to no avail.
Not sure if this matters, but I’m powering it with a Meanwell style SMPS.
Anyone familiar with this issue?


Have you verified it isn’t a power supply problem? If you have a battery handy, that’d be an easy way to check. I’d also measure the voltage at the radio’s power port.
I’m not very familiar with yaesu rigs, so I don’t have any ideas on the radio side.
Good luck