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Thanks to everyone for their help and advice. Right now I think it's time to cut my losses and junk the set. -sigh-

I fault Samsung for their lack of integrity, re support & parts. Never again, though, promise.

Following up on my last update, I am no longer having any luck getting the tv to turn on. I suppose that whatever part was causing the previously sporadic failure, is now dead. One test that -seemed- to impact the set was placing a room fan at the back of the set. It's not that it ran for greater th...

Hi NEhelp, I think I figured out what condition was making the tv turn on -> disconnecting the power cord for an hour, or more! I was able to get the tv on by doing this, but if it started to refuse to turn on, and I just unplugged it for 5-10 minutes, it would stay in its failure mode. When I did g...

Thanks for your reply, Eddie.

Any suggestions on checking the DMD board?

I've taken off the metal cover - should I remove the heatsink on the DMD chip?

The DMD board is coming up at $180 on D-M - if I knew this would fix the tv, I would consider it, but really can't afford another failed fix!

I have a Samsung HLR4266WX/XAA which refuses to work. Months ago the color wheel broke and I could hear a grating noise accompanied by significant vibration, but I followed the three-flashing-lights error code and changed the bulb, then the ballast, and only then, finally, removed the color wheel an...