A few days ago, I was listening to some music (not loudly) on my B&K AVR-202i receiver when the music instantly stopped and was replaced with a loud buzzing emanating from the unit itself (not the speakers, which were silent). I quickly shut off the unit (main power) in hopes that it was some sort of fluke, only to find that when I switched on the main power again the buzzing began as soon as it settled into standby. I pushed the sleep button to bring the 202 into operational mode (the buzzing was still happening), and it seemed like another source inside the unit began to buzz in addition to the first.
I called B&K tech support to ask if they could provide some insight as to the cause, and they told me that their first guess would be a transformer failure (OH NO!). Since then, my poor receiver has been sitting lifeless in my component shelf and I'm very distraught over the whole thing. As a poor college student, I lack the funds to replace it with a comparable unit and I'd like to know exactly what is wrong before I send it in to B&K for repairs. If there is anyone out there with ideas as to the source of the problem, I would be very grateful if you could share your wisdom! If there is any other info that I can provide to help with possible responses, please let me know. Thanks!
Edit: I'd like to add that I'm using the receiver in an apartment (for the semester) which has very sketchy power and voltage fluctuations like crazy. I know that I should have had an uninterruptible power supply or something comparable, but it's too late for that now...