Constantly buzzing - Bounty Hunter Digger Metal Detector

If it's in your car or truck have a mechanic check it out. If you mean your physical human head, get that checked out by a doctor pronto.

Sounds like a bad power supply filter cap...the buzz you're hearing is the 60 cycles hum that filter caps reduce or (hopefully) eliminate altogether. It may also be related to the tubes but finding the bad one will require some work. Any friends have this same amp? If so, try swapping one tube at a time and see if you get lucky. If this amp is new take it back ASAP as it is a manufacturing defect.

How much wattage is going through the timer and what is its rated load max? try unplugging whatever is plugged into it and see if it stops but if you exceeded the max load might be damage to the internals which can cause that buzz.

If it is a Buzz and not a Beep. the most likely problem is an obstructed fan or a loose bit of hardware vibrating. Check that the fans are clean and that no cables are in the blade area. Then if it still buzzes check all of the hardware is fitted properly.

The buzzing is probably the compressor. You may have a bad air line somewhere. Or, you may have a bad solenoid. These can be check with an ohmmeter.

Hello; If you have a plasma TV, is fairly common to hear buzz noises. They can be always there or intermittent. They can get louder as the screen gets brightest. If the buzz is noticeable when you are at normal volume setting, the buzz is excessive and a PCB probably needs replacing. These buzz noises are almost never a sign of failure or safety. LCD TV's can also buzz, but the same applies. John

Power source harmonics. Or its power supply regulation. Check also if input line is touching something.

Sounds like feedback. Check your speaker connections at the speaker and the main unit.

what is the model #

carver pm-1.5 power amp has constant buzz in speakers, try removing ground jumper on back