I have an MCD5000 RGU model F7979A that upon power up briefly displays green on each of the four radio status LED's on the front of the device. The power indicator lights red at the same time and never changes to green. I cannot communicate with the RGU via internal or external LAN. I suspect the de...

I think I may have isolated the problem to an erratic connection in a plug and socket assembly or, a socket mounted IC on the control board. I took the time to disassemble and clean those connections and the 120 started working correctly; giving a cleaner output on its own display than it had been. ...

I have an IFR Com 120a that initially wouldn't keep its generator locked much below 80 MHz nor above 995 MHz. Now it appears that the geneator won't lock below 200 MHz. I've had this problem before and all it took was cleaning connections and putting the unit back together. I've done that and still ...