Question about Optoma HD80 Projector
My HD80 has about 700 hours, original bulb assembly, was working fine until I got curious and "activated" the auto off function while going through the menu. Now it will power up, lamp does not go to full brightness, and then shuts down. Any suggestions other than bulb replacement? Ironically, I ordered a replacement bulb assembly last night, thinking it would be good to have available 5 years from now when the lamp would be at around 1500 hours (the projector is 5 years old).
Ensure a video source is connected to the projector (VGA, DVD, etc)
Unplug the projector to make sure it has completely shut down (not just went into sleep mode)
Plug in power and power on the projector (make sure video source is on first)
The projector should turn on and switch to the video source (manually select if not)
Once you can see the video source, push menu and turn off auto-off.
Auto-off should only work when the projector detect a video source is no longer present on the selected input. So if you are turning on the projector with no video source connected, it will usually turn off shortly after being turned on.
Posted on Dec 02, 2014
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Posted on Jan 02, 2017
its definitly a cooling issue.the temp sensor is working because it shuts the unit down.when a lamp goes it goes just like a light bulb.you can open up the unit and locate the fan take it out and go to a radio shack a match it up to a universal fan.
Posted on Aug 28, 2007
I wouldn't think that this is a lamp issue , as the lamp will make the picture fade away in brightness and wouldn't look white washed.
Check if the brightness is set to 50% and the contrast on 50% as well.
This could be a colourwheel that is in need of replacement.
Posted on May 13, 2008
SOURCE: HD 70 DLP Projector problem
Hi, My name is Doug Stanko.
I had the same issue and fixed the problem.
All you have to do is take a few screws out..... and blow out the inside VERY well with pressurized air. I have a compressor... and I set the regulator to 50 psi. But the KEY IS TO have the covers off so you can get between the circuit cards and blow them out. They were incredibly dusty. Even after I blew through the side vents.
I agree with all of you that say it is overheating. You are right. There was so much dust on the fan blades them selves... I'm suprised they were still spinning at all.
And like most of you... first I bought the $300 dollar bulb... put it in and 10 minutes later it was doing the same thing flashing through the colors. So trust me.
There are 4 screws on the back. Take these out.
There are 2 small nuts on the back around the VGA input. Take these out.
There are about 5 screws on the underside (think one was on the bulb changeout portion). These have long copper colored bars that go all the way from top to bottom.
All these have to be removed. Then you can take it apart. AND I PROMISE YOU WILL SEE TONS OF DUST ALL OVER.
Make sure you blow out the parts between the circiut boards AND the fan unit.
Put it back together... and remember to make sure that little latch on the bulb change cover makes the click sound ( it is a switch that must close or the unit will not power back up )..... and it will work great again.
No need for a huge fan next to it. Although I will admit that is an excellent idea.
I did this 3 weeks ago and have been watching it with no issues.
If you do not feel comfortable taking the screws out yourself..... I would take it to your local TV repair store and just ask them to take the covers off and blow out all the dust... and give it back to you. No troubleshooting... no repairs... no replacements... just blow it out.
I was an electronic technician in the US Navy for 10 years... Now I work at a nuclear power plant in Illinois. BUT I PROMISE with a good phillips head screw driver and a small crescent wrench you can do this yourself.
Good luck and you are welcome. I know how frustrating this issue is. But this is the fix.
Posted on May 13, 2009
I solved a similar problem by putting a small battery operated fan blowing directly into the IN vent (on the right side of unit). This completely takes care of the issue.
Now, I wish I knew what the real problem was so I could fix it...
Posted on Dec 22, 2009
The problem is not over-heating. The Optoma HD72 has a known problem that Optoma won't advertise. The lamp driver is faulty. They simply have to replace the lamp driver. I purchased a spare lamp with my original purchase. I had the exact same experience as you at around 1200 hours on the lamp in ECO mode. I used the spare lamp. Same thing happened at about 1200 hours. I had a friend at Optoma. he confided to me the problem. I sent it in and they replaced the lamp driver at no charge. I got another 800 hours out of the first lamp and am now using my second lamp and have about 600 hours on it. The pic quality is so good with this projector (used Digital Video Essentials to calibrate) that I'll just order a bare lamp or two and use the existing lamp housings when I need a new bulb.
Posted on Jun 19, 2010
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