CurtPalme.com Home Theater Forum

wbamb83392 · Joined: 16 Sep 2009 Posts: 8

The other night I was watching a movie on the M8500 and all of a sudden the picture went black. There were no warning lights on the control module, so I turned the projector off and then on again, and h.fail light illuminated. There's no picture at all and no high voltage crackle. I swapped out the horizontal board, and the problem remains. What would cause that light other than the H board? One thing I read in the archives was that a bad battery in the control module can cause certain problems, and the battery is completely dead though not shorted. Could that be it?

-Eric

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Remove the Control board and press down on all the chips, you'll have to remove the two daughter boards the DPB and SWB. Press down on the U7 chip on the DPB. But its best if you remove all chips one at a time and clean the pins and sockets. the daughter board sockets as well.

Athanasios

**Curt Palme** · Posted: Sat Jul 10, 2010 10:22 pm Post subject:

once in a blue moon there is some arcing on the H yoke connectors, I've had two smoke over the years. I'm guessing it's a CLM issue though, and the smoked white yoke connectors are really easy to spot if that's it.

Sparky015 · Posted: Mon Jul 12, 2010 11:32 pm Post subject:

If that batt is dead, how on earth are you watching that thing? Didn't you lose all of your settings?

stefuel · Posted: Tue Jul 13, 2010 1:44 am Post subject:

cmjohnson · Joined: 03 Apr 2006 Posts: 5180 Location: Buried under G90s

If you can find one that still works. ;D

CJ