It's very unusual for the fuse to blow in an EDP; I've never had it happen, (well over 1000 units). How old is it? Is it pre-1998 without the 5V supply conversion? Did you replace it with a 'Timed' or 'Slow-blow' fuse, these are usually marked T250mA? A fast-blow, marked 'F' can blow on start-up. Did both these fuses blow while you were using it or at start-up? Intermittent fuse failure is usually indicative of either a failing component, likely to be in the power-supply, or a dry solder joint that arcs and causes carbon build-up; again likely to be in the supply: transformer & voltage regulators. Send me more info and I'll try to help further, Regards, Andy. -----Original Message----- From: Mark Cook [mailto:firstname.lastname@example.org] Sent: 09 May 2003 13:52 To: Loopers-Delight@loopers-delight.com Subject: echoplex problem Hi, The fuse in my echoplex recently blew. After a couple of days the new fuse blew. Does anyone know what the problem might be? Thanks. Mark http://www.99namesofgod.com Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo.