HLM437W noise
Posted: Sat Jan 30, 2010 4:24 pm
I just purchased an HLM437W that the previous owner replaced the color wheel and bulb. After replacement he was left with a loud humming noise.
I have not opened up the unit yet, but the sound is a low frequency loud noise.
I am thinking a color wheel would be a higher pitch sound if out of balance, and am thinking it may be a fan issue.
The clue for the day is that when powering up before the picture is displayed the noise cycles a couple of times.
Do the fans or color wheel ramp up and down upon power up as part of the start process???
Just looking for ways to shortcut the troubleshooting process.
Thanks
Boutrous
I have not opened up the unit yet, but the sound is a low frequency loud noise.
I am thinking a color wheel would be a higher pitch sound if out of balance, and am thinking it may be a fan issue.
The clue for the day is that when powering up before the picture is displayed the noise cycles a couple of times.
Do the fans or color wheel ramp up and down upon power up as part of the start process???
Just looking for ways to shortcut the troubleshooting process.
Thanks
Boutrous