so we had a storm roll through about two weeks ago and i had everything unplugged except apparently i forgot the coax was still connected to the back of the radio. nothing took a direct hit but there was a strike maybe 300 feet away and now the 7300 receives fine, display is normal, everything looks okay from the outside but when i key up i get zero watts out. not low power, literally nothing on the meter.

ive been poking around and the finals look okay visually, no obvious burn marks anywhere on the board. driver board maybe? im not super experienced with board level repair but i can solder and i have a decent DMM. wondering if anyone has been down this road with the icom stuff or knows what to check first before i just ship it off to icom and wait 3 months.

had almost the exact same thing happen to a friends 746 a few years back. turned out to be the TX/RX relay — it was stuck in receive mode basically, switching transistor on the relay driver was cooked. radio received perfectly, keyed up fine, ALC was even moving a little on voice peaks but zero RF out. worth checking that relay first since its an easy thing for a nearby strike to mess with through the antenna connection without frying the finals entirely.

on the 7300 i believe its relay K1 on the RF board but double check the service manual, icom has those available if you hunt around. you can usually hear the relay click when you go from RX to TX, if you dont hear it or it sounds weak that's probably your culprit. replacement relays are like a few bucks.

check the PA bias too while youre in there. sometimes a near strike will shift the bias voltage on the final transistors just enough that they wont conduct properly for TX even though they arent blown outright. not a dead short, just... wrong. i've seen guys replace finals that didnt actually need replacing because they never checked bias first.