From: Ortona, Italy
Registered: Jan 2004
posted January 15, 2015 12:40 PM
There are specific mag-head demagnetizers, places like radio shack should still sell them. Yet there is an easy, inexpensive way to de-mag sound heads, namely to use the heads themselves; you just have to set the projector in record mode with no film, let it run with the sound on sound knob set to normal (100%) position and wait for about 15 secs. The bias current from the heads will demagnetize them. Of course this will not demag other metal parts coming in contact with the film such as the capstan. But before a projector needs demag, it needs long long hours of use.