Help with EMu Proteus 2000 Display

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Help with EMu Proteus 2000 Display

Postby valverec » Wed Oct 27, 2010 5:57 pm

I just bought 2 EMu Proteus 2000's on eBay from the same person, and it's like the contrast is turned all the way up on the display, so that the text rectangles for each letter are all the way dark. I can barely read it at any angle. I've tried adjusting the screen view angle, but that doesn't do much. It just helps me barely be able read the screen from a very narrow angle. It's just really strange that both are doing the exact same thing. I don't see a contrast adjustment on here.

If I were able to adjust contrast, that would probably fix the problem. Am I missing something? I also did a factory reset and that did nothing. I opened the top, and I don't see any internal pot to adjust the contrast. Has anyone seen a problem like this before?
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Re: Help with EMu Proteus 2000 Display

Postby valverec » Thu Oct 28, 2010 4:37 pm

Does anyone know where I might go to find info on this problem? Is there a good site for EMu tech help?
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Re: Help with EMu Proteus 2000 Display

Postby rhino » Thu Oct 28, 2010 6:08 pm

My first guess is this:
Most LCD displays have a built-in negative-voltage generator to bias the pixels. Since it's likely that both displays came from the same manufacture - maybe from the same batch - that if something failed in one, it could well fail in the other. Replacement displays should be easy to find.
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Re: Help with EMu Proteus 2000 Display

Postby valverec » Fri Nov 12, 2010 6:33 pm

Thanks for the info. It looks like it'll probably cost almost as much to get a new screen as it is to just buy another Proteus 2000. Bummer.
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Re: Help with EMu Proteus 2000 Display

Postby rhino » Fri Nov 12, 2010 7:47 pm

"A thing may seem impossible...until it's done."
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Re: Help with EMu Proteus 2000 Display

Postby pricklyrobot » Sat Nov 13, 2010 1:52 am

valverec wrote:Thanks for the info. It looks like it'll probably cost almost as much to get a new screen as it is to just buy another Proteus 2000. Bummer.
Yeah, http://www.eprelectronics.com (good source for Proteus/Command Station parts in general) has replacement LCD's, but they're $78.
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