The Dying Blowfly that Sounds like an Electrical Short

If you EVER hear that noise coming out of some electrical equipment - be it ever so faint or worse, watch out - you could be about to have a fire or an explosion on your hands.

Unplug it all straight away, and have some kind of fire extinguisher equipment at hand, and IF you know what your doing - examine it for the fault.... or at the least drag it if you can, away from other flammable objects......

Proper fire extinguishers are good, and if there is no live connection, a garden hose will do.

Zzzzzzzt ---------- Zzzzzzzzzzzzt ------ Zzzzt...

Be very worried - then and there and do something about it.