I've been trying to fix this old tape recorder in the past couple of days. I have basic knowledge on electronics, still trying to learn. The tape recorder doesn't play any audio, everything else works fine (mechanically speaking). Tested most capacitors and resistors, all of them were fine...
I have a sharp ht cn400d home theatre, and that i lately noticed a high fuzzy noise(the noise that a radio makes when not connected to a antenna) comes from inside it(mainboard), and the same noise comes from the 5 audio output channels too. The home theatre does not play any music other than...