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noos@xp37+
Joined: 17 Jun 2008
Posts: 464
Location: Berlin/Munich
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| Posted: Wed Jan 15, 2014 8:15 am Post subject: Houston, we have an Ultra problem - no picture |
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I did some tests with lifting the projector nose up and down. For that reason (I am working alone) I had to drop one of four parts of ceiling mount from the Ultra (including the Ultra) two inches on a rack. Did that a few times before without problems.
Now the Ultra boots like normal with all the sound including scan lock - but no picture on any tube. No menus and no input! I expect/hope that it is just a board that sits lose now. Tested HDm and FGM so far without success. Help!
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Wed Jan 15, 2014 10:26 am Post subject: |
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Hi,
Try to reseat all the boards. Especially the HDM. Which LEDs are on on the CLM and the LVPS?
Regards,
barclay66
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noos@xp37+
Joined: 17 Jun 2008
Posts: 464
Location: Berlin/Munich
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| Posted: Wed Jan 15, 2014 10:49 am Post subject: |
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Hey guys, thanks for the speed.
Indeed there is no high votlage crackle.
And no led I can see. At LVPS all leds off. Can not see the back of the projector.
The LVPS front side received the hit....
Reseated HDM/FGM - as these are the only ones I can reach.
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noos@xp37+
Joined: 17 Jun 2008
Posts: 464
Location: Berlin/Munich
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| Posted: Wed Jan 15, 2014 11:10 am Post subject: |
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Ok guys, as you know I am not an expert in electronics as you are. But with your theories I was able to extrpolate a solution. A solution that incoporates my strong sides, but most importantly my motivation and my ultra short patiencs.
I did hit the Ultra´s LVPS, HVPS, HDM and FGM segments - powersuplies harder than the the boards for sure.
Then I switched on the Ultra, and did hear the hv cracking again - short after that the the 1080p72 showed up on the carpet.
Try this with your digital!
I hope it stays this way, because I guess as long as I do not hit the Ultra again I will be safe.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Jan 15, 2014 2:31 pm Post subject: |
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There might be a lost screw somewhere in the chassis causing a short. Most likely against the back plane. I had a screw lodged into the 24 volt line for the belly fans on my first set. I discovered why it wouldn't work 5 years and 5 more marquees later when i began striping it down to the chassis. Must have got there when I moved it from the sellers house where we had it showing an image and the 5 hour drive home to my cellar.
Athanasios
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noos@xp37+
Joined: 17 Jun 2008
Posts: 464
Location: Berlin/Munich
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| Posted: Wed Jan 15, 2014 11:31 pm Post subject: |
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I have an TAN 8500 Ultra - on one of my fist test a screw fell into it. I never bothered, but I guess I should remove it before I start to use the TAN....
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