This is an unsolicited testimonial for KHB Photografix, a firm that specializes in repair and sale of traditional darkroom equipment. Web : www.khbphotografix.com The power supply for my Saunders/LPL 4550 failed and while browsing eBay I stumbled on this web site. Much to my delight, they are located on the border of Toronto where I live. They not only repaired my power supply but during our discussions, they offered some other helpful tips as well. Their facilities are well organized, and because of the shrinking use of darkroom equipment, they are very busy supplying an international market. If you have a need, try them.