This reminds me an episode in "Surely You're Joking, Mr. Feynman!" where he fixes a noisy radio just by trying to understand how can the problem happen and comes to conclusion that the most likely cause is that amp's vacuum tubes heat first and generate a lot of noise before the rest of the circuit is ready. He swaps tubes, problem is gone and the owner of the radio (which was very sceptical at first) goes around telling about this twelve years old boy "he fixes radios by thinking!".