Color wheel issue? - AVS Forum
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post #1 of 9 Old 03-20-2012, 10:00 AM - Thread Starter
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Hi guys,
I hope you can help me with this one.
I changed the bulb on a Planar 7060 but the picture is only black and white.
Even the menue is only dispayed in B+W. My best bet would be the color wheel. What puzzles me is that the glas is pysically fully intact. As this
color wheel has no white segment it must still be turning because white is created from the three primary colors.
So my guess is that there is not signal created by the hall sensor.
The magnet strip is at least 1mm away from the hall sensor, could this be
a potential problem?
.

Greets,
Klaus
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post #2 of 9 Old 03-20-2012, 11:00 AM
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You're certain the color wheel is intact? Because without it, you have a B&W image.

You do not need the color wheel for a white screen, that comes from the lamp.

If the sensor were not working, then the projector would sense a problem and shut down.

No, if you are seeing a perfect B&W image, with NO color of any kind, it has to be the color wheel.
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post #3 of 9 Old 03-20-2012, 01:46 PM - Thread Starter
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I have taken it out and it is physically totally intact.
If it was not turning at all the image would have a
strong tint of the color segment that was in front
of the light tunnel.
I found out that the wheel has an optical sensor
which broke quite frequently on Mitsubishi RPTVs.
I think I will first try to clean the sensor and see if it will work.
It's possible that I got to much dust flying arount
when building a Lamp assembly as the projector came without
one.
.
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post #4 of 9 Old 03-20-2012, 01:55 PM - Thread Starter
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Here is a littel board with the sensor on it.
If cleaning fails I hope I can purchase one and solder it in.
LL
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post #5 of 9 Old 03-20-2012, 02:20 PM
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And if it wasn't turning, the projector is supposed to shut down. Very unusual. Let's hope cleaning the sensor does it for you.
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post #6 of 9 Old 03-20-2012, 06:53 PM
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Quote:
Originally Posted by Sheridan1952 View Post

You're certain the color wheel is intact? Because without it, you have a B&W image.

You do not need the color wheel for a white screen, that comes from the lamp.

If the sensor were not working, then the projector would sense a problem and shut down.

No, if you are seeing a perfect B&W image, with NO color of any kind, it has to be the color wheel.

Not if he doesn't have a white segment. He would have red and black or blue and black etc.
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post #7 of 9 Old 03-20-2012, 06:54 PM
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To test you might try messing with the color settings with a white screen and see if the temperature changes.
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post #8 of 9 Old 03-21-2012, 04:52 AM
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I wasn't saying if the wheel was intact but not moving. I was saying if the glass was GONE, he would have NO color of any kind. But I wasn't clear in my statement.

Quote:
Originally Posted by Verge2 View Post

Not if he doesn't have a white segment. He would have red and black or blue and black etc.

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post #9 of 9 Old 03-21-2012, 09:29 AM - Thread Starter
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Thank you guys,
I got it working.
I cleaned the sensor and build a box around the lamp.
I am really thrilled because I bought the Planar on Ebay
for just 136 Euro without a Lamp assembly.
Building a custom Lamp assembly was easier than I expected
once I could find some nice guy at Osram who gave away the
working distance for the lamp.
This actually means that any projector can be custom fit to
the cheapest lamp and driver one can find.
Actually the driver for this lamp can be purchased at Optoma for
60 Dollar and the original OEM lamp for 65 Dollar at Amazon.

If any one wants more info I am willing to describe the process
of conversion.

Cheers,
Klaus
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