IIRC there's also a big brass one that goes all the way through to the black bottom of the PSU - try giving that a tighten too. (That's what always caused it for me).
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Colin Piggot Sent: Sunday, February 15, 2009 2:03 PM To: [email protected] Subject: Re: Power supply making a buzzing noise Thomas wrote: > It's not too important, since I have a spare (albeit with the VHF > video thingy missing), but my Sam's power supply has started making an > increasingly loud buzzing noise when it is plugged in. Should I be > alert that it is not long for this world and/or worried for my own > safety? Should not pose a problem for safety as generally the buzzing is caused by the transformer plates rattling due to Eddy Currents and just the mounting nuts need a good tightening. What you can do is when it is switched off and unplugged - you'll want to make sure it is unplugged as the live and neutral wires are soldered right onto the transformer and are not insulated - is to unscrew the four screws that hold the power supply case together, then take the lid off. You'll see 4 nuts holding the transformer in place - try tightening them up and see if that stops the buzzing. Colin. ===== Quazar : Hardware, Software, Spares and Repairs for the SAM Coupe 1995-2009 - Celebrating 15 Years of developing for the SAM Coupe Website: http://www.samcoupe.com/
