Hardware Failure - Caused by Dust?

[enjay]

But projector bulbs...... now there is a different matter. As soon as I can, they are all going (including IWB's) for a touch screen LCD's with a glass/perspex front. Just waiting for the right product to come along.

 

Personally, I think touch-screen LCDs are still too small and too expensive, especially now Casio do those bulbless projectors.