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great explanation, I understand how the boot sequence works now. It seems it would be safe to assume that because the system would initially fire up when the set hadn't been run for some time and color wheel was cool but failed to fire up after the set was shut down and then powered back on within a...

ovadoggvo, Thanks for the reply! Before buying another CW, is there a way to power the one I have to see if it spins? If so what pins to +/- @ 5vdc. As I said in the previous posts, I acutally found the wheel wasn't spinning at all (that was the red screen when I powered the lamp itself). When the u...

I've troubleshot my DLP not turning on to the color wheel not spinning. (all the details are in my other post)

How do I determine if the board or the color wheel is bad?

can anyone help me with this? :(

Another Latest Update: Pulled the bulb out and found the color wheel doesn't spin (this is why on my last post I noted the red screen, the CW was stopped on Red). Checked all connections and made sure the wheel spins free. Reassembled and the same results. I imagine there is a timing circuit of sort...

latest update- I was able to jumper the transistor on the ballast board as described in the other thread. I can get the bulb to fire up, the screen turns a dark shade of red and the "Lamp" LED continues to flash on the front of the unit. Color wheel problems? Wheel not spinning up or getti...

I just read further in the threads and was able to see how to check the ballast volatge.

Ballast voltage is 386vdc constant.

Model #: HLN617W Manuf Date: May 03 History: Purchased unit used this past January. The original owner replaced the lamp recently but I cannot confirm by what manufacture or brand name (no information on the lamp itself). It worked fine for approx 3 weeks and then the color wheel exploded and made n...