We kept getting some voltage spikes back into our amplifier. One of the things we put in place is a 10kOhm resistor (discharge load) connected to the output of the amplifier. However, the resistor keeps burning and setting on fire. The amp company offered a way on checking this... I'm really trying to understand what this guy is saying, I didn't even realise that resistors have a power limit. I can measure the voltage output (although it's a sinusoidal signal so not sure what to do here) and I have the resistor value. So I can calculate the power across the resistor. My question is where do I check the Wattage limit of my resistor? It's just a general resistor from the electronics lab. A suggestion was to use a CADDOCK power film resistor which are 15W, 20W, 25W or 30W non inductive resistors with cooling tab, would this stop the thing melting? Thanks for any advice with this any suggestions would really be appreciated.