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Author Topic: Sony SRX R 515 yellow spot on the screen Jerzy Gwizdz Film Handler Posts: 25 From: Nowy Sacz Malopolska Poland Registered: Apr 2015 posted 02-09-2019 12:13 PM                        Hello. In the pictures, my problem. You have an idea how eliminate it ? The stain is invisible on the 3D lens The projector has worked 18,000 hours All the best  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 02-09-2019 01:50 PM                     If your machine is clean, then this is most likely a gamma or uniformity issue. Who is doing field service at your location? Ask them if they can do a gamma and uniformity calibration using the necessary equipment, like the PCAB-U and PCAB-G cameras. You can also buy those cameras yourself, but they're quite pricey.  |  IP: Logged Sascha F. Roll Expert Film Handler Posts: 140 From: Berlin, Berlin / Germany Registered: Sep 2015 posted 02-09-2019 03:41 PM                     Marcel is mostly right, but I'd like to add: In order to get the best possible result (especially in the darker parts, e.g. Grey2 etc) Cleaning of the Optical Block AND (very important) Adjustment of the Wavelengt filters (Black uniformity) is absolutely necessary prior to PCAB-G and -U. There are several bulletins on this issue, if Adjustment of wavelength filters has never been done the factory glue has to be removed. Btw, your pictures are definitely lacking quality but I have the impression that the tech who installed your projector used to much lens shift, I see some severe Vignetting in the bottom right corner. Even if you have a silver screen >2.0 gain this is definitely not normal.  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 02-09-2019 07:45 PM                     The vignetting/hot-spotting is definitively pretty terrible. It almost looks like some kind of flash was used to take the picture. Now, it could look worse on the photo than in real life.  |  IP: Logged Jerzy Gwizdz Film Handler Posts: 25 From: Nowy Sacz Malopolska Poland Registered: Apr 2015 posted 02-10-2019 11:28 AM                        Hey You're right the pictures are bad, in the near future I'll show you from the test Full Screen Gray-2, Full Screen Gray-8, Full Screen Gray-10 in better quality I hope that my technician will fix the problem. Greetings  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-10-2019 11:56 AM                     Make sure he plans and is able to perform ALL the steps Sascha mentions above. After 18.000hrs, a full clean and adjustment of the light-engine + PCAB-G and -U run is necessary to get it back to specs. - Carsten  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-10-2019 05:21 PM                     I'm curious to hear your experience on the quarter-wavelength filters on the engine. I was trained to do so but then never got to perform any so I do not know what kind of improvement you can achieve when doing that. Does the engine really need that adjustment after a number of hours? What is your experience on that?  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-10-2019 06:06 PM                     It's important to maintain black level and reduces color blotches. After a few years of operation, the effect of a re-adjustment is clearly visible. The hot-glue is applied after initial factory adjustment and is meant to secure it during transport to the installation location. Afterwards, it is no longer necessary to fix the adjustment levers that way. It won't fix a toasted T-Core, but it can make the difference between toast and non-toast. - Carsten  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-11-2019 03:39 PM                     Thanks. I wonder what changes on the chips that affects polarisation. People may like that or not but I like the idea that those adjustments can be made on the field on a Sony. Yes, it gets dusty but yes you can clean it.  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-11-2019 04:42 PM                     It's a mechanically adjustable element in front of the panels, so it suffers on/off, heat induced expansion and contraction. So, after some time of operation (and maybe earlier if you have many hours and/or all lamps active), it needs readjustment. I guess on consumer devices, they are designed fixed and non-adjustable for cost reasons, so, after a while, the consumer beamer is beyond repair or can no longer be readjusted through color calibration alone. - Carsten  |  IP: Logged Jerzy Gwizdz Film Handler Posts: 25 From: Nowy Sacz Malopolska Poland Registered: Apr 2015 posted 02-13-2019 12:39 PM                        Hey Promised photos in better quality My technician confirmed sascha's steps I hope he knows what is going on? greetings  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 02-14-2019 06:17 PM                     Well, like mentioned above by Sascha, Carsten and me... it looks like a traditional gamma/uniformity issue. So get your tech in and ask him to: - Clean all relevant parts of the machine - Black uniformity adjustments, if necessary - PCAB-G and PCAB-U runs Usually, that should fix the problems. If it doesn't, it's getting more expensive, because then your T-Core is probably toasted. Unfortunately, that is a somewhat common issue with the 515.  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-15-2019 09:23 AM                     First picture shows a big yellow spot in the middle. I thing you will need a new T-Core.  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-15-2019 10:25 AM                     Yes, quite possibly. http://www.film-tech.com/ubb/f16/t002301.html Jerzy - what software version is this 515 running, and do you know wether the cooling scheme has ever been adjusted? Is this a screen running many 3D shows, or with all 6 lamps on? - Carsten  |  IP: Logged Jerzy Gwizdz Film Handler Posts: 25 From: Nowy Sacz Malopolska Poland Registered: Apr 2015 posted 02-18-2019 08:42 AM                        Software version 2.51.1090 cooling has not changed yet 3D projections with 6 lamps about 30% of the total hours 2D projections with 4 lamps The service arrives in the evening Jerzy  |  IP: Logged

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