On Sat, 2007-08-25 at 08:27 -0400, Dave Phillips wrote: Dave, Here's a paraphrase of an email that I sent to Yamaha a couple of years ago ;-) You might find it enlightening ;-) I bought a new Yamaha EMX88S portable PA on August 7th, 2005. I used the PA on the night of August 20th, 2005 at a gig. I was very pleased with the unit. Since I didn't have enough room in my car I asked our other guitarist, Robert, if he would take it home with him and he could bring it to the next gig. Robert dutifully took the system home and placed it under his bed for safe keeping. All of this would be unremarkable except for the fact that I live seven blocks off of the beach in Long Beach, MS and Robert lives about a mile from Lake Pontchartrain in Slidell, LA. Needless to say, Katrina came along a week later and changed quite a few things around here. My family and I evacuated east and Robert and his family went west. Unfortunately, Robert, being ever the optimist, didn't evacuate his musical gear or move it to higher ground. The EMX88S spent about a day and a half under two or three feet of muddy, Lake Pontchartrain water. When Robert returned he pulled the muddy PA out from under his bed and, having no other real alternatives and little hope, hosed it down to remove the crud. He then let it sit in his house for a couple of months. There is still a small amount of dried mud inside the unit but nothing major. We plugged it in, hooked up a couple of speakers and tested it out.... Everything worked! Here it is, two years later, and I'm still using it and everything still works. Cheers, Jan -- Jan 'Evil Twin' Depner http://myweb.cableone.net/eviltwin69 "Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, chardonnay in one hand, chocolate in the other, body thoroughly used up, totally worn out, and screaming 'WOO HOO, what a ride'"

On Sat, Aug 25, 2007 at 08:27:30AM -0400, Dave Phillips wrote: Assuming the water that went in it wasn't really clean, the most important thing is to get the all the dirt out. I would disassemble it into as many pieces as is possible by unscrewing and unplugging things, clean all the parts with clean water (and nothing else), dry them, then let those that have absorbed water dry out for a long time in a warm and dry place. The latter is important for electric components that may have water inside (no matter how little): switches (including the power switch), potentiometers, etc. A particular case is the power transformer - if it's not an an impregnated type it will require a long time to dry. Printed circuit boards and connectors should be cleaned carefully, as any residue left may be conducting. When you reassemble, first rebuild the power supply, test it for isolation, then try and see what happens if you switch it on. Only if there's no smoke, funny smells, etc. after an hour, and voltages seem OK, retest isolation and if OK connect the rest. I went through this once for a power amp that had several liters of beer poured into it. It worked perfectly again afterwards. Good luck ! -- FA Follie! Follie! Delirio vano è questo !