I have been using a pair of Sennheiser headphones for quite some time now (HDR 118). They offer good sound and sit comfortably, however they do work based on RF signals (863 - 865 MHz) and have been catching a lot of interference as of late.
Instead of just getting a new pair of...
please, would some good person help me with analysis of this circuit (my guess it's a FM radio). My task is to revive it, however I don't quite know how.
What I'd do:
1. Connect the circuit to 9 V voltage source
2. Divide the circuit to 2 parts - AC and DC
3. Search for voltage...