Third time this month I've killed a video transmitter from bench testing without proper airflow. It's important that you don't leave the drone powered on the ground/bench for too long without proper cooling / airflow. Always try to take off as soon as you plug in the battery to avoid VTX overheat. Anyone have good solutions for bench cooling during setup?

Running O4 Pro setups mostly, but even my analog VTX units are getting cooked during Betaflight configuration sessions. How do you guys handle extended bench time safely?

Small desktop fan pointed at the drone works wonders. I use a USB fan from Amazon - runs off my computer's USB port while I'm in Betaflight. Haven't fried a VTX in over two years since I started doing this.

Remove the VTX antenna temporarily during bench setup if you're not actually transmitting. Make sure the VTX antenna is attached when you plug in the battery. Only connect it when you need to test video feed.

Been there, done that. Lost two O3 units the same way when I was starting out. Now I set a 30-second timer on my phone every time I power up on the bench - forces me to either take off or power down.