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Author Topic: DOLBY DSP 100 - OUTPUT RED Allan Barnes Expert Film Handler Posts: 108 From: GRAND BEND, ONTARIO, CANADA Registered: Mar 2009 posted 05-26-2019 07:26 PM                        HELP and ABUSE REQUESTED.... suddenly at showtime my main screen turned RED.. that is black/white/red. I assumed wrongly it was the NEC 1600C-A projector. COLOUR TESTS showed perfectly fine. RED/BLUE/GREEN TEST even the NEC LOGO WHITE TEST was fine. IN YOUR EDUCATED OPINION which "card" in my recently upgraded DOLBY DSP 100 has failed? AND has this happened to anyone else?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-26-2019 08:55 PM                     you dont by chance mea pink snow? if so it is a issue of security either a bad ethernet cable is there a error showing up on the dolby log or a gore board failure  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 05-27-2019 05:25 AM                     Try a DVI source. It still suspect it's the projector. I doubt there may be an issue with Green and Blue on the server; all colours are packed and encrypted via SDI. They are separated inside the projector. Red/Green/Blue patterns are generated on the light engine itself - bypassing many boards. The NEC logo is not though. That's why I'm suggesting trying a DVI input to see. I'm not a super NEC expert so others will have other comments for sure.  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 05-27-2019 06:53 AM                     Allan: As I understand it, you tried another DSP100 with the original DSS100 and the image is OK, which does point blame at the DSP100. I don't know how it can do that but apparently it does. However I don't know what "cards" are in there, and anyway the unit is obsolete - factory service and parts unavailable.  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 05-27-2019 07:10 AM                     It's not in 3D mode is it? HD/SDI ports not reversed?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-27-2019 11:00 AM                     A 2D/3D mismatch would get you a pink image one way and a green image the other. Make sure the DSP100 is set to 2D in Show Manager (Control Screen). It is possible it is the DSP100 and it could also be possible it is just one of the SDI outputs...in which case it is possible to work around that by putting the DSP100 into 3D mode and tell the NEC projector to just look at the good output and change the color space to work with the 4:2:2 input (MXFI, if you have that PCF).  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 05-27-2019 02:21 PM                     I have used that very trick to get me partially out of trouble, it was one side of the HD/SDI input had failed rather than the server output. Same difference though.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-27-2019 09:59 PM                     It can be a handy too to keep around. I've had a bad cable (not made by me) cause a theatre to lose image...that "trick" was far faster than repairing the cable.  |  IP: Logged Allan Barnes Expert Film Handler Posts: 108 From: GRAND BEND, ONTARIO, CANADA Registered: Mar 2009 posted 05-28-2019 02:50 AM                        THANKS ALL.... The problem isn't the NEC Projector / nor were the BNC cables reversed / nor a bad Cat5 cable... I had a backup server and just swapped the DSP100 (same software) and everything was fine. New keys and we're back in business. But I want to fix the issue...it's somewhere in the old DOLBY DSP100... but "card / board" is bad. Swapping & Testing now with NO pressure.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-28-2019 07:06 AM                     There is very little one can do in a DSP100 that won't kill it altogether. It is designed to commit suicide if it is tampered with (like most every other mediablock). You can change the fans and very little else in there (and they use security screws to hold it together).  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 05-28-2019 02:37 PM                     One should still swap the 'bad' server back at some time to see if the issue reoccurs. Sometimes a server swap solves an issue without the server being the issue. - Carsten  |  IP: Logged William Kucharski Expert Film Handler Posts: 244 From: Louisville, Colorado, United States of America Registered: Oct 2012 posted 05-28-2019 03:53 PM                     quote: Carsten Kurz One should still swap the 'bad' server back at some time to see if the issue reoccurs. Sometimes a server swap solves an issue without the server being the issue. Particularly in the case of a flaky or oxidized connection; just the act of moving cables around and plugging/unplugging connectors may solve the issue.  |  IP: Logged

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