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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Wed Apr 01, 2009 1:10 am Post subject: Dwin with a blank screen....what are my options? |
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At first the screen would show that no signal was present...at some point that went away. I now have nothing on the screen, no menus, nothing. Any ideas what I could try next?
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Wed Apr 01, 2009 3:04 am Post subject: |
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Start with adding more info so everyone has a better idea what you've tried, what works, what doesn't ?
Start with what model DWIN ?
Have you tried a known good signal to all available inputs on the projector ?
Does it display internal test patterns ? (or did it ever, if you're getting nothing now...)
Can you verify it is even responding to remote signals ? Is the remote on the right "address" or does it even need to be ? Does it have onboard controls ? Any response to them ? Can they be locked out in any fashion ?
Just saying its got a blank screen isn't much to go on...
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Wed Apr 01, 2009 3:40 am Post subject: |
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http://www.hometheaterhifi.com/volume_7_3/dwin-hd700-crt-projector-8-2000.html
Again, I haven't read it, but maybe it will help.
From the little reading I'm doing, you MUST have negative-negative synch, and it is VERY picky about which signal it will display, and you won't get ANY menu's without a signal to display(crazy setup if you ask me, but after all, it is the OTHER American designed projector...).
Also, I saw mention of the crappyness of the remote...
And it does use Toshiba tubes, apparently at very low levels so they take forever to show wear, DWIN supposedly rated them at 20,000 hours of useful life...
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Wed Apr 01, 2009 3:57 am Post subject: |
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If you get it to show anything, you can check the hours with this:
Dwin hours,
PJ on, on the remote press menu, 9, 0, enter, 9, 8
1 second each hit.
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Apr 01, 2009 4:48 am Post subject: |
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Go Paul go! 
_________________
Tech support for nothing
CRT.
HD done right!
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Wed Apr 01, 2009 5:49 am Post subject: |
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I owned one before...so it's not like I'm not aware of all of that stuff.
THe fact that the screen is now blank is not good...I think I hear a faint ticking sound coming from the power supply.
Negative to negative synch of course...that's what I'm setup for. Problem now is there is nothing on the screen...nothing. The remote works, the projector powers on, but no pic. I thought it might be pic mute, but it doesn't exist.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Apr 03, 2009 3:47 am Post subject: |
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I think the projector is not getting HV (no crackling)...and thus no pic. I also think the ticking sound in the power supply could be a blown cap or something...anyone have any suggestions?
Ben
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Fri Apr 03, 2009 12:16 pm Post subject: |
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Did you read any of those threads I linked to ?
Steve Brunosky(sp?) was describing a problem with his DWIN's ps and I'm sure he mentioned some specific parts that were changed...
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