Optoma HD70 DLP Video Projector Repair No Power / Bad Color Wheel

Another projector from my day job that was sent in after a second new projector lamp did not resolve their problem. Allegedly the first projector lamp did not seat easily so some wires were moved and screws turned. At some point, a wire contacted the metal casing and power ceased being delivered due to a bad fuse.

I also found many pieces of glass from a failed color wheel. The dust/cobwebs caused the color wheel to fail from excessive heat and age.

Fortunately the only real problem was the fuse. This was fortunate in that none of the power semiconductors had failed not any of the high wattage resistors. After replacing the 5 amp fuse, the unit powered up happily.

The color wheel was an easy replacement as well.

If you happen to need a lamp for an HD72 or any other model that uses the SP 80N01.001 click there and use code YT50 for 5% off your order.
https://www.purelandsupply.com/sp80n0...

This lamp assembly and repair applies to all of these models.
BL-FP200C ,BL-FS200B, EP738P, EP739, EP739H, EP739X, EP745, EzPro738P, EzPro739, EzPro739H, EzPro745, H27, HD32, HD70, HD7000, HD720X, SP.85S01GC01, Theme-S H27, and Theme-S HD720X

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00:00 words
02:04 Lamp assemby examination
05:56 Remove back panel fasteners
07:10 First notice of missing color wheel
07:38 Remove front bezel screws
08:18 Remove remaining scers for upper case
09:03 Take all the case pieces off to expose insides
11:03 Color wheel removal begins
13:10 Color wheel post mortem
15:50 Verify no power
16:11 Interior tear down begins
20:54 Power supply troubleshooting/Repair
29:50 Ballast examination
37:34 Initial power test after fuse replacement
45:05 Test color wheel install
44:49 Inital test with good color wheel,fuse and lamp
49:57 New color wheel installation
52:25 Final re-assembly
1:11:21 Final Testing