I got the Panasonic RX5100 and noticed a burnt electronics odor coming from the tuner board. The person I purchased it from had a small video they done of the bbx working. I had noticed when they switched it to AM there was a loud humming noise. So when I got the box I used Deoxit on the switches. I tested everything with the front off and both AM and FM are working without issues as does the tape deck. I do not see or smell anything new burning while it's powered up but still the odor is there. Just wondering if anyone else has ever smelled a burning odor without anything actually being burnt. One other thing the band switch seems to have the most odor 