I have a 6 year old, barely used FT2900R Yaesu rig. It sat on a shelf for about 4 years, unused. I recently connected it to power again, and now the transmit audio cuts out terribly. It was checked by another station with a deviation meter, and I was informed it does have excessive deviation. I tried switching to narrow deviation and the problem was still present. Another symptom that showed up at the same time, is when I turn on the 13.8v power supply, with the 2900 off, the 2900 display flickers momentarily when the power supply is initially turned on. The 2900 performs normally in every other aspect. My first check was to see if the power supply is spiking when turned on, but nope. A perfectly stable 13.8 vdc at all times. The supply being used powers my Ftm400xdr beautifully, and no display flicker on the 400 at power up. A new replacement (ft2980) can be had for less than $150 on sale, but to toss aside this 2900 would seem a waste of an otherwise great radio. Any help would be appreciated.