Overhead Projector Maintenance Contracts
Does anyone out there have an ongoing maintenance contract with a service agent/supplier to maintain their overhead projectors?
We do all of the 'normal' maintenance on ours (clean filters, lenses, blow dust out etc...), but quite a few are starting to get the 'burn-in' pink edges around the screen and need to be professionally maintained or repaired. They are mostly out of warranty.
Nearly all of our projectors are the orange or silver Sanyo type.
Any details or suggestions welcomed.
Thanks - Andrew