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Issue with Espon 8700UB projector?

672 Views 6 Replies 4 Participants Last post by _audiobliss_, Aug 6, 2019

_audiobliss_

Discussion Starter · Aug 5, 2019

I've never posted here before, so my apologies if this is the wrong forum or if I have structured my post incorrectly!

tl;dr - How long should I expect the fan on my Epson 8700UB to stay on after I turn off the projector? Also, bulb replacement recommendations?

I used a Runco CL420 for a number of years previously, and when I shut it off the fan would always stay on to cool the bulb for several minutes. When I upgraded to my Epson 8700UB, I was very surprised to notice the fan only stayed on maybe a max of 30 seconds, possibly not even that long. But it performed fine, so I was happy. Then one day the bulb exploded. The bulb is rated for 4000 hours, and it had much less than that on it. Since I apparently did not note the hours anywhere, I'll just say it was less than 2,000, but I really think it was a good bit less than that as well.

The shorter fan duration and the bulb failing earlier than expected has me concerned there may be a problem with my specific projector, but also it was a used projector with a (probably) quite old bulb in it, even if the hours were low. So I can definitely accept this being a fluke and not an issue with the projector. I just don't want to spend the money ona new bulb only to have it blow soon as well.

ALSO, what about bulb replacement options? New from Epson a ELPLP49/V13H010L49 bulb is $331. I'd much rather spend lessthan that. Googling I see what are assuredly non-OEM replacements for ~$60, as well as replacements that claim to be OEM with an Osram bulb for ~$130-160 and carry 90-180 day warranties.

Thank you for any feedback you can provide!!

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noob00224

· #2 · Aug 5, 2019 (Edited)

_audiobliss_ said:
I've never posted here before, so my apologies if this is the wrong forum or if I have structured my post incorrectly!

tl;dr - How long should I expect the fan on my Epson 8700UB to stay on after I turn off the projector? Also, bulb replacement recommendations?

I used a Runco CL420 for a number of years previously, and when I shut it off the fan would always stay on to cool the bulb for several minutes. When I upgraded to my Epson 8700UB, I was very surprised to notice the fan only stayed on maybe a max of 30 seconds, possibly not even that long. But it performed fine, so I was happy. Then one day the bulb exploded. The bulb is rated for 4000 hours, and it had much less than that on it. Since I apparently did not note the hours anywhere, I'll just say it was less than 2,000, but I really think it was a good bit less than that as well.

The shorter fan duration and the bulb failing earlier than expected has me concerned there may be a problem with my specific projector, but also it was a used projector with a (probably) quite old bulb in it, even if the hours were low. So I can definitely accept this being a fluke and not an issue with the projector. I just don't want to spend the money ona new bulb only to have it blow soon as well.

ALSO, what about bulb replacement options? New from Epson a ELPLP49/V13H010L49 bulb is $331. I'd much rather spend lessthan that. Googling I see what are assuredly non-OEM replacements for ~$60, as well as replacements that claim to be OEM with an Osram bulb for ~$130-160 and carry 90-180 day warranties.

Thank you for any feedback you can provide!!

The manual does not state the cooling off period, but 30 seconds sounds ok.
Some bulbs malfunction before their due date, it happens.

Bulbs not sold by Epson are a risky proposition. Some might not work, burn up quickly, or damage the projector. The ones that are ok generally have a lower lifespan and or lower brightness, by as much as 25%.

LE:if you live over 1500m/5000ft High altitude mode can be activated.

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_audiobliss_

Discussion Starter · #3 · Aug 6, 2019

noob00224 said:
The manual does not state the cooling off period, but 30 seconds sounds ok.
Some bulbs malfunction before their due date, it happens.

Bulbs not sold by Epson are a risky proposition. Some might not work, burn up quickly, or damage the projector. The ones that are ok generally have a lower lifespan and or lower brightness, by as much as 25%.

LE:if you live over 1500m/5000ft High altitude mode can be activated.

Thanks for the input! After some more feedback and calling Epson support, I'm inclined to think the cool down period is not an issue.

I'm not at high altitude, but I don't think I even knew that mode existed!

I'm looking at a few Osram and Ushio bulbs I'm trying to decide between, hopefully either of those will be fine.

Thanks again for the help!!

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rekbones

· #4 · Aug 6, 2019

If you bought the projector used who knows if the lamp hours were accurate as anyone could have reset the lamp timer without replacing the lamp. Putting non OEM lamps in LCD projectors is always a big gamble because if the UV filters are not up to snuff you can burn the polerizers very easily. If your lamp housing is in good shape maybe just replacing the bare lamp with a known OEM lamp would be a lot cheaper and safer.

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mhutchins

· #5 · Aug 6, 2019

If you can tolerate the added noise, I would run the projector in high altitude mode. I run mine that way but I also have it in a sealed box with extra ventilation on a separate thermal switch. The thermal switch increases the cool-off period to several minutes. These two things combined have improved my bulb life, but then again, my sample size is just 2 bulbs...

. By the way, my projector is sealed inside the box such that the ventilation fan air flow is forced through the projector to supplement the normal cooling flow through the projector.

Mike

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_audiobliss_

Discussion Starter · #6 · Aug 6, 2019

rekbones said:
If you bought the projector used who knows if the lamp hours were accurate as anyone could have reset the lamp timer without replacing the lamp.

Good point. I know the previous owner, so it wouldn't have been done maliciously and I feel hours were probably accurate. But they definitely could have been reset mistakenly or even unknowingly.

rekbones said:
Putting non OEM lamps in LCD projectors is always a big gamble because if the UV filters are not up to snuff you can burn the polerizers very easily.

Do you think an Ushio from Projector Quest or an Osram P-VIP from PureLand Supply would be problematic or potentially cause damages? (I was going to post URL's to the assemblies I'm considering, but I don't have a high enough post count yet.)

rekbones said:
If your lamp housing is in good shape maybe just replacing the bare lamp with a known OEM lamp would be a lot cheaper and safer.

Unfortunately I no longer have that housing. I wish I had held onto it, but while I was cleaning the blown bulb I tossed the housing.

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_audiobliss_

Discussion Starter · #7 · Aug 6, 2019

mhutchins said:
If you can tolerate the added noise, I would run the projector in high altitude mode. I run mine that way but I also have it in a sealed box with extra ventilation on a separate thermal switch. The thermal switch increases the cool-off period to several minutes. These two things combined have improved my bulb life, but then again, my sample size is just 2 bulbs.... By the way, my projector is sealed inside the box such that the ventilation fan air flow is forced through the projector to supplement the normal cooling flow through the projector.

Mike

That sounds like a great setup you have going! And thanks for the tip on the high altitude setting. I may have to play with that when I get it going again.

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