So today I was attempting to re-organize behind my entertainment center because, ironically, I thought the jungle of wires and peripherals back there was looking like a bit of a fire hazard. I had straightened everything out and was plugging the peripherals back in. When I connected the Hauppauge cable card tuner (which uses 5V@2A) I accidentally connected my cable company's switch-digital AC adapter, which runs over twice the voltage. The tuner almost immediately started smoking and crackling and I immediately pulled the plug. It was powered this way for maybe 2-3 seconds. As I sat there breathing in the smell of burned electronics I assumed it was toast. After letting it sit for about 5 minutes I plugged it in, and it is functioning completely fine.
My question is, am I stupid to continue to use this? It appears to be working fine, but obviously this has to be powered on at all times in order to function correctly, and I would hate to have the house burn down because it overheated trying to record a TV show. At the same time, it's going to sting shelling out over $115 for something that may work perfectly fine. I tested it for about an hour running both tuners at the same time, and it was warm to the touch, but I'm assuming no warmer than it's ever been in the past. What do you guys think?