It's about my Pinnacle USB PCTVTunner - doesn't work anymore. I've opened it and i figured out that SMD SOT23 package was broken. It's says on it : A018. It's linked directly to +5V of USB.There's another SMD on PCB exactly like it, i've made some measurements(you find them in the MMC.jpg) :i guess it's a zener diode, i don't know for sure. If you have a suggestion, please tell me. Thanks!