I was doing some GOOGLE searches on LEDs to build a "poor-man's ZeeG-align" and I am now wondering if anyone has experimented using white light LEDs to replace the light source of enlargers? Heat could be greatly reduced, perhaps eliminating the need of a fan in a Omega Dichroic II head (for instance). For what I have read, there are also LEDs "bulbs" that would screw in on regular bulbs sockets, meaning a condenser incandescent light bulb could also be replaced by LEDs. Comments? Guillermo