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Topic: Optoma HD29HE, HD28B orange glowing light on dark background
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Joined: Apr 5, 2023
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Hello, I just bought an Optoma HD29HE projector and it displays an orange glowing light on dark background, see attach photo. Before sending it back, I bought a second one, and it has the exact same issue.
I searched the web and could find a couple of similar cases:
https://www.zupimages.net/up/22/02/8eho.jpeg (Optoma HD28e)
https://media.apreslachat.com/ImageForum/14793/2 (Optoma HD28B)

It seems it's not an isolated case and this issue could plague several Optoma models.

Has anybody experienced this?

According to a post on a French forum, Optoma France's support claims this is a "hot spot" and is normal. I find it hard to believe, and I can't personally live with this issue.

What do you think?

Attachments:

glowing light on black

1600 × 991 pixels (183.06 KB)
  
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Joined: Mar 28, 2005
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Just for sanity, when you turn off the projector, the spot goes away completely, correct? Just want to ensure there are no other lights or sources which may be causing that light. Especially if you've seen it twice in the same location from two models.

I assume when you move the projector around the light moves as well with things? If the projector is creating that light, then the light should move with it as the projector moves.

I haven't seen this personally, but I can say that my BenQ w1070 (older version of HT2050A) does not have this problem that I've ever noticed.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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Thank you for your quick reply!

To answer your questions:
Quote:
when you turn off the projector, the spot goes away completely

Yes. And I tested in 2 locations, with all lights off.

Quote:
I assume when you move the projector around the light moves as well with things

Indeed, what you see on my screenshot remains the same when moving the projector around.

In the meantime I have found another case like mine:
https://www.reddit.com/r/projectors/comments/i525hq/new_optoma_146x_i_assume_this_is_what_it_means_to/
This time it's on the HD146X, and the thread is 3 years old... Makes me wonder if it's like this on all Optoma models that share similar specs, and if people are happy with this nonetheless

The issue is only noticeable on a black or very dark picture. I was watching Spider-Man (2002) and it was really distracting in dark scenes.

Projector distance from the wall is around 2.5m (8ft), and picture mode is "eco". Image mode is "reference" (the most colour neutral and faithful mode on this model).
[Edited by FredForest on Apr 5, 2023 at 8:27 AM]
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Just curious if you're using a screen, or a wall, for your projection?

Are you ceiling mounting the projector, or is it table mounted?

I'm wondering if this is actual light bleed, or if you're seeing the lens reflected off a wall. It's just not a super common complaint that I've run into. Optoma models have issues, but I would have expected this to REALLY come up as a major issue over the years of reading through the forums and it has not.

AVS has a lot of owners and it may be worth posting/asking in that forum as well.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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It's table mounted. Projected on a white wall, mat paint. I also tried in another flat on a chair, different mat white painted wall, exact same result.

It looks like light bleed to me.

Thanks for the tip, will post on AVS as well.
[Edited by FredForest on Apr 5, 2023 at 11:17 AM]
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