My TX-500 died recently. I had done the latest firmware update and then successfully used the radio for a while. I put the radio away for a month and then, a week or so ago, got it ready for a trip. When I hooked it to a resonant antenna and keyed down/whistled into the mic/pressed the Tone button, the SWR showed "9.9" and there was no power out. It was the same on all bands.. When connected to a dummy load, it showed an SWR of "9.9" and no power out. When not connected to an antenna at all and put into transmit (AM/FM) it eould show a "1.0" SWR, with no power output. The radio is now at the Nevada service station. I'm wondering if there might be a problem with the latest firmware.
