Official Mitsubishi hc4000 ONLY Thread - Page 96 - AVS Forum | Home Theater Discussions And Reviews
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post #2851 of 2867 Old 03-06-2014, 03:16 PM
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Quote:
Originally Posted by fleaman View Post

Strange that the Canadian price is $423 Canadian, but only $221 US dollars from the USA site.

confused.gif

Yes I noticed that too. Odd. I appreciate the link though.

I found this place... they have a section outlining the importance of ensuring lamps are legit, not copies, etc. but for some reason I still wonder:

http://www.projectorlampsource.ca/mitsubishi_hc4000_projector_bulb.html

Mitsubishi HC4000/Elite Screens 120" SableFrame CineWhite/Darbee Darblet/WDTV LIVE HUB/WD MYBOOK LIVE NAS
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post #2852 of 2867 Old 03-06-2014, 04:51 PM
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Quote:
Originally Posted by funstuff View Post

Yes I noticed that too. Odd. I appreciate the link though.

I found this place... they have a section outlining the importance of ensuring lamps are legit, not copies, etc. but for some reason I still wonder:

http://www.projectorlampsource.ca/mitsubishi_hc4000_projector_bulb.html
Not sure why the Canadian price is so much higher, since I've always ordered from the US site. I've always received an OEM lamp from Projector Lamp Experts. BTW I wouldn't trust the place you just found http://www.avsforum.com/t/1472311/projector-lamp-source-claims-original-bulbs-ships-generic-bulbs/0_50

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post #2853 of 2867 Old 03-07-2014, 09:51 AM
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I don't have any specific advice but you guys are making me wonder.

After moving to a new house with a different arrangement (bigger screen, longer throw), my 1000 hour bulb wasn't as bright as I wanted it (well under 11 ftl). I switched from eco to normal mode, re-calibrated, and resorted to using a brighter mode for gaming or daytime viewing where I don't care quite as much about color accuracy.

I found a place that had all the BS about true OEM bulbs but at significant savings over other places. I bought a bulb thinking I would get maybe another 500 hours out of my bulb before I would want to switch. In all appearances it was identical to the old, at least that is what I remember at the time. Had osram stamped on it somewhere.

When I finally switched, I found the new bulb to be no brighter than the old. I also found calibrating to be more difficult, it seemed to run out of red sooner than the old one even, which effectively means even less brightness for accurate greyscale.

I've just been living with it thinking it was just bulb to bulb variation or my different set up making the new bulb not as bright as I would have expected, but now I think I just got scammed. The bulb works, but I don't feel like I got what I wanted and now I feel like I need to worry about premature failure too.

Live and learn I guess.
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post #2854 of 2867 Old 03-09-2014, 05:52 PM
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Try to clean the color wheel, maybe you get a little boost in brightness.
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post #2855 of 2867 Old 05-04-2014, 02:43 PM
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Hi Guys ,

My PJ is shutting down automatically after couple of minutes. Not used for a month and the buld is around 400 Hoyrs ( low lamp) .Any idea ? Thanks for you response.

Here is the video on how it behaves

https://www.youtube.com/watch?v=OHZleNht3_s
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post #2856 of 2867 Old 05-04-2014, 06:45 PM - Thread Starter
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IS it out of warranty?

Go inside the service menu and watch the temperature gauges.

Automatic shoutdown could be a bunch of things:
Bad Lamp
Overheating
Faulty Power Supply
Faulty internal voltage regulation due to a bad part within the on-board electronics (bad resistor, etc...)

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post #2857 of 2867 Old 06-07-2014, 07:02 AM
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I have a HC4000 and have been away for a while, I have zero issues. Not that I want to create issues but is there a newer better firmware I should be using? I think mine is about 2 years old, or would be a new hardware platform?

Love the projector BTW.
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post #2858 of 2867 Old 08-20-2014, 10:03 PM
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Hey guys, I have had the HC4000 for about 4 years now. It has been a lovely experience, and I am always impressed with the picture quality coming out of this thing.
However, I recently moved to a new place. On power up, the projector started making a rattling noise. I thought it was probably something in the fans. I disassembled the unit and pulled out a very thin piece of plastic maybe 1.5cm wide and 4cm long, very thin. Sure enough, it had been stuck in a fan. I couldn't tell where this plastic had come from.
I then reassembled the unit and plugged it back in. The power light flashed green and red, alternating between the two colors. The fans did not turn at all. There was no image shown at all, not even a black screen. I have taken the HC4000 apart and put it back together a couple times to make sure that everything was put back together securely. No luck. I also have left the unit unplugged for days before trying again. No luck.
I read over 25 pages of this thread and haven't seen anyone with the same problem. I feel it is something stupid easy to fix, just a way to reset the computer or something. Any thoughts guys?
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post #2859 of 2867 Old 09-06-2014, 02:31 PM
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Hey Jesh, I had the exact same problem as you after replacing the bulb and trying to fix the buzzing sound.....I found your post looking to try and fix the problem, after a ton of trouble shooting I found that a small metal clip that covers a "button" signaling the lamp cover (the port to change the bulb) is closed had come dislodged. when i flipped it upside down it (the metal clip-which is about 1 cm long and only several millimeters side) fell into my new bulb and I found it because it made a rattling sound. anyways I replaced the metal clip and then it worked fine after, i still didnt fix buzzing sound, I think i have a color wheel problem.

to give you an idea of where to look. look closely at the bottom of the "lamp cover" and you will see a small "L shaped" piece of plastic that fits inside into a groove and when put in fully pushes a small black"button" you will see that if you push and hold the button yourself it will allow the projector to turn on. Hope you can find the metal clip.

i never use this forum, but if you have other questions you can email me. mowglidowgli at gmail
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post #2860 of 2867 Old 09-20-2014, 01:10 AM
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Quote:
Originally Posted by mowglidowgli View Post
Hey Jesh, I had the exact same problem as you after replacing the bulb and trying to fix the buzzing sound.....I found your post looking to try and fix the problem, after a ton of trouble shooting I found that a small metal clip that covers a "button" signaling the lamp cover (the port to change the bulb) is closed had come dislodged. when i flipped it upside down it (the metal clip-which is about 1 cm long and only several millimeters side) fell into my new bulb and I found it because it made a rattling sound. anyways I replaced the metal clip and then it worked fine after, i still didnt fix buzzing sound, I think i have a color wheel problem.

to give you an idea of where to look. look closely at the bottom of the "lamp cover" and you will see a small "L shaped" piece of plastic that fits inside into a groove and when put in fully pushes a small black"button" you will see that if you push and hold the button yourself it will allow the projector to turn on. Hope you can find the metal clip.

i never use this forum, but if you have other questions you can email me. mowglidowgli at gmail
You are awesome! That was the problem, there was no metal clip at all to depress the switch. Thank you so much!
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post #2861 of 2867 Old 12-18-2014, 10:59 PM
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Replacement bulb (assembly) - can't find one that works.

Hi!

I've had my HC4000 for about 4 years. At this point the picture is pretty dim, and I've been looking for a replacement lamp assembly. I've ordered from two different places: G-Lamps (via Amazon) and DLP Lamp Source (from their website dlplampsource.com). Both not working. They look good for about 10-12 minutes, then the "temperature" warning starts flashing and eventually the projector turns itself off. When I put the old lamp assembly back in, it works fine. Could altitude be a factor? I am in Colorado, at about 5500 feet above the sea level. Mitsubishi does not recommend using this projector above 5000 feet. However, I have had no issues with it in the past. I just can't find a replacement lamp that would work. Please advise!
Thanks!
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post #2862 of 2867 Old 01-03-2016, 02:26 PM
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Resurrecting an old thread. Who here has taken the top off the Mitsu HC4000 and could pass on that knowledge to me. I have taken all the screws off the bottom but there still seems to be something I am missing.
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post #2863 of 2867 Old 01-03-2016, 02:44 PM
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Originally Posted by shivaji View Post
Resurrecting an old thread. Who here has taken the top off the Mitsu HC4000 and could pass on that knowledge to me. I have taken all the screws off the bottom but there still seems to be something I am missing.
Hi Shivaji,

If I recall correctly you have to also remove the screw that holds the lamp cover and the lamp cover itself. You might also need to remove the screws that hold the IO cover at the back, however I'm not 100% sure about that.

After that you should be able to lift the top cover.
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post #2864 of 2867 Old 01-03-2016, 03:00 PM
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Quote:
Originally Posted by stxrc View Post
Hi Shivaji,

If I recall correctly you have to also remove the screw that holds the lamp cover and the lamp cover itself. You might also need to remove the screws that hold the IO cover at the back, however I'm not 100% sure about that.

After that you should be able to lift the top cover.
Thanks for the reply. I have also removed the 2 screws on either side of the rear inputs as well. Is that what you mean in referring to the IO cover? it still seems to be caught on something when I try to lift it up and off.
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post #2865 of 2867 Old 01-04-2016, 12:30 AM
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Quote:
Originally Posted by shivaji View Post
Thanks for the reply. I have also removed the 2 screws on either side of the rear inputs as well. Is that what you mean in referring to the IO cover? it still seems to be caught on something when I try to lift it up and off.
There are 6 screws (two are the vga port nuts) to come off the io panel on the back. You also have to remove the lamp cover screw and take the lamp cover off. Also be careful as there is a small ribbon cable that is attached from the switch panel to a quick release connector on the top of the projector.
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post #2866 of 2867 Old 06-08-2016, 04:59 PM
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Hello all.

I have a HC4000 projector at home and I'm currently having an issue with it. Yesterday I used it with no problems and the lamp life "bar" was still blue with 3k hours of use. I went and turn it ON today and it only turns on for about 10 seconds, enough time for the mitsu logo to show up but after that it turns off the lamp and power light starts blinking green to red and status light blinking green, both at the same time. Manual says to contact dealer but Ive had it for over 4yrs so no warranty. Is there any troubleshooting I could do?

Thanks
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post #2867 of 2867 Old 06-08-2016, 07:40 PM
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I should have stated that when lamp goes off, fans turn on on high mode during the blinking lights. They stay like that for a few seconds then they turn off and just the blinking lights continue.
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