Zwants Supplies Engineering gives free estimates on industrial DLP product repair! We repair Discovery 4100 development kit, W4100 development kit, and LightCrafter 4500 module, etc, and please always feel free to contact us for more repair options. if it's fixable, we'll fix it! We give a three month warranty on all our repairs. We stock a multitude of parts for quick turnaround time. Most of our repairs are done in one week.