Bought 3 MP3300 projectors for presentation projects
One of the projectors had the color disk broken. Being a technician myself, I opened the projector and took the color disk part out. The other two projectors seem to be fine. However, after I bought 3 new lamps from ebay, out of the 3, only one gives me images. After connecting a PC with a VGA cable, I don't get any images. Called Dell support, and after half hour trouble shooting, we didn't accomplished anything. We left it to use other VGA cables. I did that and still doesn't work. Now I am out with 3 projectors and 3 lamps and the worst part, I can not even find a local place to bring them for repairs. Can you help, I live in Fremont, California, Bay Area. I really appreciated any great advices. Thanks & best regards, Felix Trejo
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Re: Bought 3 MP3300 projectors for presentation projects
Felix, lesson one, never buy a bulb off ebay...
with the projector operating by itself do you get a menu displayed off the projector. If yes, it would appear that the ribbon cable from the front end electronic are not making a good connection. After replacing color wheel are the colors correct some times you need to set the index.
Let me know
Re: Bought 3 MP3300 projectors for presentation projects
OK first thing if you have broken the disk on a DLP projector, you can not repair with out specialist equipment to set it up, as for your other ones it sounds like your lamps are faulty, you must not use lamps over the rated hrs or you will damage the projector, if you want more help just ask me but unfortunatly in am in the UK so cant vist.
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It could be a broken connection in the computer lead for the red signal, or a fault on the projector that the red panel doesn't work any more.
To diagnose, bring up the projector's on screen display. If there's white in the menus then the problem is the cable. Replace it with a new one. If the menus are affected too then it's a projector problem. This requires the attention of a service engionner.
may have fried fly-eye (diffuser) lens and fried light filter on one or more of the lcd panels. both due to excessive dust and heat. unfortunately, you'll have to replace the entire optical engine. toshiba doesn't sell individual parts.
try reseating the vga cable. Try removing the cable, the green tint should disappear meaning that the color or lack of one of the primary colors blue/red/green were missing due to bad connection. or maybe you have a bad vga cable.
If you're trying to project video, then the unit needs professional service. If you're trying to project from a computer, you may have a loose display cable, broken pins in one or both ends of the display cable, or broken conductors (wires) within the display cable. The computer sends its image information as a template of RED image components, GREEN image components and BLUE image components with the projector overlays to create the complete image with blended color values. (The computer also sends HORIZONTAL and VERTICAL synchronization signals, but those don'e affect the color content of the projected image.) That's why I'm suspicious of the display cable, conductors or pins.
this is due to improper power supply or a loose connection inside. the symptoms are of power supply unit inside projector. check out the current and amperes inside the projector on board. sometime the current stable but the ampears are down.also check the switching transistors & filters inside.......
I'm going to guess that you have a wide screen Dell laptop with a 16:10 aspect ratio and a default resolution of 1280X800. The wide screen is great BUT most presentation grade projectors do not have a native (pixel for pixel) 16:10 mode. Instead they still prefer a display input with a 4:3 aspect ratio like your old square CRT or standard definition TV. Why do they prefer a 4:3 input? Mainly because Powerpoint prefers to display a slideshow in a 4:3 mode. Because of this Dell, in their infinite wisdom, created the 'presentation mode' utility in an attempt to automatically convert the VGA output of your laptop from 16:10 to 4:3 on the fly. In my experience this is an annoyance at best and at worst can seriously impact the size and quality of the projected image.
The best thing you can do when you connect to a projector is ignore the presentation mode alert and manually set your laptop's resolution to 1024X768 for an XGA rated projector or 800X600 for an SVGA rated projector. This will cause your desktop to look stretched on your laptop but will give you by far the best projection image.
It sounds as if your light tunnel has come loose and most of the time it has to be repaired by a technician, Like myself or someone in your area. I am new to this site and thought i would try out my skills here and see if i could help some people. Let me know if that helps. You can also ship it to me and i can take a look at it and evaluate it for you. I repair projectors for " Luckstrike here in Louisville, Kentucky. email me if you need more info or call 502-773-7969 and ask for Jay