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Author Topic: Video Lamp defect Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-25-2009 06:59 AM                     We sell those projectors and don't have the lamp life issues with them. However...better than a black screen between clases...use blue screen. Why? Because if you run black too long, you'll kill the blue LCD panel...let the heat through. It also lets the person know that the projector is actually already on. I believe it is also possible to have the PLV-80 told to run at full fan speed all of the time for improved cooling. Depending on where it is mounted, this could be a noise issue...in a booth, run it at full speed, period and clean the filters WEEKLY. [Update]. Via RS232, it IS possible to tell the fan to run at full-speed all of the time. It is also possible to, via the service menus, to also tell the fan speed to run at full, though I would have to research that more. Another thing to try is to put the lamp mode into automatic...this should ratchet downt the lamp power when the image isn't calling for anything bright. Steve [ 02-25-2009, 08:50 AM: Message edited by: Steve Guttag ]  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 02-25-2009 02:34 PM                     Hi Marco, please take note of this in my last post: quote: ME Absolute minimum on time should be at least 1.5 hours. It is an issue of the repeated on/off cycles AND the short run time that's killing your lamps. Steve: I agree with you that blue screen would be the better option, but in the case of most rooms at UCI the screen is HUGE, center stage, and the professors would have problems working in the blast of blue light. As a matter of interest though, I will compare the output of a "white" image on both projectors in my facility to see if the classroom machine is lacking in blue or has other color balance issues. (And yes I'll set all the parameters to the same settings including intensity and color temp.) I lucked out in the remodel of that room, after a lot of badgering I got them to install a separate video projector for our video programs, as before then we had to use the classroom projector which usually had bad lamps or other issues. Now I have a machine that is over four years old and has barely 120 hours on it. So it always looks great!! (Sanyo multi-verse LCD, the model number escapes me at the moment.)  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-25-2009 05:36 PM                     Thanks Steve and Tony Tony I see. But I can't - at the moment - keep the projector and lamp on during the film projection. It would need both advertising system modifications and the installation of a mechanical dowser to keep the light off the screen. Steve As you pointed the fan speed is not an issue in a projection booth! But it cannot be set by the user menu. Can you point me how to enter the service menu? I'll check immediately for the RS232 software. Thanks!! Marco  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-25-2009 07:55 PM                     It'll take more digging on the Service menu side and that is a dangerous place to be as many truly Service things are in there and identified only by Group number and data. For the RS232... issue the following command: CF FANSPEED MAX<cr> [edited to change the RS232 command to an issued command rather than a "read" command.] Steve [ 02-26-2009, 09:17 AM: Message edited by: Steve Guttag ]  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-26-2009 03:56 AM                     Thanks you Steve. How can I connect to the PLV? I mean how can I send this command? Something like telnet?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-26-2009 09:27 AM                     So long as you have the supplied RS232 cables (mini-din to DB9) then most any device will work. The speed is 19,200 N,8,1. Telnet should work so long as you know how to send the carrage return command as well. I use a program that Ray Derrick of Panalogic wrote called "Serial Talk." I really like it since one can develop command sets to test various processors and such...it also has a decent visual aspect for looking at the send/receive commands. I'll ask Ray if I can post it here. Steve  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-26-2009 01:09 PM                     Hi Steve Yes, I have the RS232 - Control Port cable. Is this command permanent? I mean, does it change the fan speed all the time, even after a power cycle? I will test asap, thanks again for your great help. Marco  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-26-2009 01:28 PM                     To be honest...I'm not sure...whenever I've used the command it was with a controller so the command was issued each time it was turned on (not necessarily on the PLV-80)...however, if you need to put it back, I believe the command is CF FANSPEED NOR Steve  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-26-2009 01:30 PM                     Thanks I'll let you know Marco Update: I've succesfully connected to the PLV by Hyperterminal and sent the command you gave me. It's permanent, meaning that I can power cycle or remove power cord but on the next time the fan will be at maximum speed again. Just for information, with my USB RS232 adapter I had to set to "none" the "flux control" option. I fitted a brand new lamp. I'll let you know in 100/150 hours! Is there a way to have the complete RS232 list of commands for future reference? Thank you Steve. Marco [ 03-01-2009, 07:15 PM: Message edited by: Marco Giustini ]  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 04-20-2009 06:46 AM                     Hi Steve and everybody The lamp is now 75 hours old, no signs on it. Usually at least a white spot would have appeared after this time. Another projector I've modified with an almost new (20 hours) lamp already fitted, with already a white spot on it, has now at 105 hours the same white spot, nothing more. Seems that it works. What about the full list of RS232 commands? Is there a way to extend the time of cooling after the projector has turned off? Updates will follow. Thanks Marco  |  IP: Logged Tarvi Tihhanov Film Handler Posts: 1 From: Tartu, Tartumaa, Estonia Registered: Jul 2009 posted 07-09-2009 01:24 AM                     Hello everyone, I am new to the forums and the movie business, but i have the same problem here in Estonia. Sanyo plv-80 projectors burn lamps trough every 120-180 work hours. I have a USB to RS232 cable. Can anyone teach me HOW to turn up the fan speed via telnet or a program? I would really appreciate it. many thanks in advance  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 07-09-2009 06:56 AM                     Sanyo is now publishing the RS232 commands. On the US web site us.sanyo.com...navigate to the commercial/projectors page then select the projector in question, go to resources and there you will find the RS232 command sheets in PDF form. Note, they also have discontinued models but their resources may be limited. Here is the PLV-80s expanded command sheet: http://www.us.sanyo.com/dynamic/product/Downloads/RS232C_Expand-19411916.pdf Steve  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 07-09-2009 06:49 PM                     Thank you Steve. Too late I'm afraid, I do not work anymore for that company! However, the two projectors I modified before leaving were perfect at 100/120 hours of working. I read on Christie's web that that kind of lamp is designed to work at very high temperature... I don't know what to think. However, I found that we didn't use original spare lamp. Maybe this was the main cause Thanks Marco  |  IP: Logged

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