Just picked up a 142GTL, receives great, but have problem with transmit. When you first turn it on and tx, the meter swings with the modulation for about 2-3 seconds then apparently, it dies. The meter drops to zero, and if I unkey it and do it again, the same thing happens (for about 2 or 3 more tries, then nothing until I turn the rig off and wait about 10 minutes). When talking to someone a couple miles away, they get the same thing (I come in loud, then fade to nothing), however, I can still hear myself on a radio in the same room (so I know I still have tx audio). My first thoughts are either the final or driver, but hopefully I can get some second, third, fourth, opinions on what to check -