The above picture is a failing MOSFET that has broken down, the annoying thing is that it was still electrically working correctly but only with the use of a thermal imager you can see how it is much warmer than the black outlines of the other devices operating correctly.
This fascinating image shows a fender blues junior behind with the valves glowing brightly at a warm 195 degrees C! now you know to let your amp cool down a bit before moving it!
Using a thermal camera we can find faults including bad storage capacitors, transformer winding issues, semiconductor issues, and lots more! we also like to take random pictures of workshop items......such as the soldering iron!