Hello all, I am brand new to this forum, and joined with the intent of sharing or trading repair information with other fellow techs. I own a beautiful Browning Golden Eagle Mark III SSB, and it's been a headache for several days now. Here is what it is doing: I was sitting next to the radio listening to it, and it just keyed up by itself! I never touched the microphone, which is a non amplified G-stand d-104. I immediately turned the radio off and unplugged the mike, scratching my head wondering what happened. I tried the Electro-Voice Banana mike and the radio just hums or buzzes. The hum is coming from the area of the 7558 final tube. I tried plugging in the d-104 to the radio again, and it just keys itself up without touching the sidebar. I thought it was a mike issue, as i tore down the d-104 and inspected it for shorts, bare wires, ect and found absolutely nothing that would put the mic to blame for the issue. Both mikes that I have worked fine on this radio, so I know it isnt the problem. It's something internal in the transmitter and I am now completely lost. Does anybody have a clue what might be causing this, before I break the bank and send the radio to a reputable Browning repairman who charges close to 40 dollars an hour?