Hi, my BenQ W1080ST is dying after ~3700 lamp hours (flickering and missing colors). Amazon lists the BenQ HT1085ST as the new version of the W1080ST. Anyone has or can recommend for/against the HT1085ST? Or are there other short throw models I should be looking at (which is also 3DTV Play compatible)?
Hi, my BenQ W1080ST is dying after ~3700 lamp hours (flickering and missing colors). Amazon lists the BenQ HT1085ST as the new version of the W1080ST. Anyone has or can recommend for/against the HT1085ST? Or are there other short throw models I should be looking at (which is also 3DTV Play compatible)?
I've looked recently myself, but it doesn't really look like anything has changed except for the plastic case. Even the software is the same.
Why not get a new bulb for your W1080ST?
Well, I'm afraid the problem might be from something other than the bulb, because some color hues and values are missing now... see pic: [url]https://drive.google.com/file/d/0B6Xql6Q_IBP-U0czSHFrX2RfUms/view?usp=sharing[/url]
The transition in gradients are supposed to be smooth.
Projector Central is a good site to find information about Projector features.
http://www.projectorcentral.com/BenQ-HT1085ST.htm
Your color issue might be due to the color wheel failing, I've no idea, never looked into color wheel issues before.
You should check YouTube for videos that show your problem and there might even be an easy fix.
There are a couple of videos showing bad color wheels in DLP TVs, same thing basically.
https://www.youtube.com/watch?v=WrwfSHXKNgc
https://www.youtube.com/watch?v=4cHUVxQQoKo
Thanks guys :) Horizontal keystone in HT1085ST can be very useful for me to clear up some space, I just hope it doesn't degrade the image quality too much. I really don't have the experience to try fixing my W1080ST and I'm afraid it's not just a bulb replacement issue. I think I'll buy the new model by January
Thanks guys :) Horizontal keystone in HT1085ST can be very useful for me to clear up some space, I just hope it doesn't degrade the image quality too much. I really don't have the experience to try fixing my W1080ST and I'm afraid it's not just a bulb replacement issue. I think I'll buy the new model by January
For what it's worth, you have probably made the right choice to go for a new projector compared to repairing an old one. I have been through several lamps and a colour wheel. I would not recommend replacement of a colour wheel unless you have at least some electronics experience.
In the future, I recommend installing a dust filter on the air inlet ports on the projector - if not already installed. Dust is the main cause of not only fast bearing decline, but also a washed out look, when dust builds up on the colour wheel.
I don't believe the HT1085ST is 3D vision compatible. Are you planning on hacking the inf?
I believe that with some of the newer 3D (not 3D Vision) projectors that support frame packing over HDMI 1.4, you might be able to get 3D Vision to work via 3D Play 1080p @ 120fps effective at 60Hz. I have seen people hint at this but no-one has explicitly confirmed it. If the HT1085ST doesn't support this feature, you may wish to get a projector that does.
Some old timers like me choose to stay at 720p/800p @ 120Hz simply for the 120fps in 2D, but depending on your taste, you might prefer 1080p @ 60Hz instead if you could potentially get frame packed 120FPs from the 60Hz.
For what it's worth, you have probably made the right choice to go for a new projector compared to repairing an old one. I have been through several lamps and a colour wheel. I would not recommend replacement of a colour wheel unless you have at least some electronics experience.
In the future, I recommend installing a dust filter on the air inlet ports on the projector - if not already installed. Dust is the main cause of not only fast bearing decline, but also a washed out look, when dust builds up on the colour wheel.
I don't believe the HT1085ST is 3D vision compatible. Are you planning on hacking the inf?
I believe that with some of the newer 3D (not 3D Vision) projectors that support frame packing over HDMI 1.4, you might be able to get 3D Vision to work via 3D Play 1080p @ 120fps effective at 60Hz. I have seen people hint at this but no-one has explicitly confirmed it. If the HT1085ST doesn't support this feature, you may wish to get a projector that does.
Some old timers like me choose to stay at 720p/800p @ 120Hz simply for the 120fps in 2D, but depending on your taste, you might prefer 1080p @ 60Hz instead if you could potentially get frame packed 120FPs from the 60Hz.
Windows 10 64-bit, Intel 7700K @ 5.1GHz, 16GB 3600MHz CL15 DDR4 RAM, 2x GTX 1080 SLI, Asus Maximus IX Hero, Sound Blaster ZxR, PCIe Quad SSD, Oculus Rift CV1, DLP Link PGD-150 glasses, ViewSonic PJD6531w 3D DLP Projector @ 1280x800 120Hz native / 2560x1600 120Hz DSR 3D Gaming.
That image doesn't really look like a color wheel problem to me, and it doesn't match the videos DMan-11 posted, where the color is actually flickering.
To debug this properly, instead of just guessing, you can do it methodically. Jumping directly to the color wheel as the problem simply because colors are wrong is not good diagnostic technique.
Based on your image, I also don't think this is a bad bulb. Bad bulbs tend to flicker or be extra dim. (BTW, replacing bulbs is super easy, anyone can do that, but it's $100 bulb, so it should be worth it, like 2000+ hours on a bulb.)
Your image looks like a bad cable to me.
Bring up the On screen menu. Does it have color problems? The on screen menu is internal to the projector and thus pulls pieces out of the display chain (computer and cable) that could be causing problems.
That image doesn't really look like a color wheel problem to me, and it doesn't match the videos DMan-11 posted, where the color is actually flickering.
To debug this properly, instead of just guessing, you can do it methodically. Jumping directly to the color wheel as the problem simply because colors are wrong is not good diagnostic technique.
Based on your image, I also don't think this is a bad bulb. Bad bulbs tend to flicker or be extra dim. (BTW, replacing bulbs is super easy, anyone can do that, but it's $100 bulb, so it should be worth it, like 2000+ hours on a bulb.)
Your image looks like a bad cable to me.
Bring up the On screen menu. Does it have color problems? The on screen menu is internal to the projector and thus pulls pieces out of the display chain (computer and cable) that could be causing problems.
Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607 Latest 3Dmigoto Release Bo3b's School for ShaderHackers
When he said flickering and missing colors, it made me think of the color wheel. I've really no idea.
It might be better if he took a picture of http://tft.vanity.dk/MonitorTest_pureHTML.html or http://www.lagom.nl/lcd-test/contrast.php to show the color gradients.
@RAGEdemon I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, I wouldn't try it now that my warranty is expired :)
If I bumped the refresh to 100, 110, 120 it defaulted to frame packed and my projector would only show a tall skinny image of two frames stacked.
@RAGEdemon I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, I wouldn't try it now that my warranty is expired :)
If I bumped the refresh to 100, 110, 120 it defaulted to frame packed and my projector would only show a tall skinny image of two frames stacked.
[quote="D-Man11"]When he said flickering and missing colors, it made me think of the color wheel. I've really no idea.
It might be better if he took a picture of http://tft.vanity.dk/MonitorTest_pureHTML.html or http://www.lagom.nl/lcd-test/contrast.php to show the color gradients.
@RAGEdemon I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, I wouldn't try it now that my warranty is expired :)
If I bumped the refresh to 100, 110, 120 it defaulted to frame packed and my projector would only show a tall skinny image of two frames stacked.[/quote]
Sorry, my bad. I missed that he said 'flickering'. I got to 3700 hours and said "new bulb."
I guess the real question is what kind of flickering? Brightness flickering could be bulb, color flickering could be the color wheel. Flickering would also not likely be cable.
@enthralled: what kind of flickering does it seem? How does it look with the projector menu up, and maybe even test pattern?
@RAGEdemon I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, I wouldn't try it now that my warranty is expired :)
If I bumped the refresh to 100, 110, 120 it defaulted to frame packed and my projector would only show a tall skinny image of two frames stacked.
Sorry, my bad. I missed that he said 'flickering'. I got to 3700 hours and said "new bulb."
I guess the real question is what kind of flickering? Brightness flickering could be bulb, color flickering could be the color wheel. Flickering would also not likely be cable.
@enthralled: what kind of flickering does it seem? How does it look with the projector menu up, and maybe even test pattern?
Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607 Latest 3Dmigoto Release Bo3b's School for ShaderHackers
[quote="D-Man11"].
I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, [/quote]
Wow! It is possible - play games via 3D-Vision/3DTVPlay in this resolution?! How I can do this? I have BenQ W1080ST...
D-Man11 said:.
I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX,
Wow! It is possible - play games via 3D-Vision/3DTVPlay in this resolution?! How I can do this? I have BenQ W1080ST...
4K3D on passive LG OLED 4K TV 65C6V, GTX 1080 Ti, Win 8.1 64 Pro, i7-7700, 3D-Vision 2 on Benq LW61-LED PJ. HTC Vive. Panasonic Z-10000 3D Camcorder
@bo3b
3700 lamp hours puts him at the end of bulb life and I'm sure it wasn't used exclusively in smart eco mode for 3D Gaming.
But it certainly couldn't hurt to take it apart, like RAGEdemon said, dust can cause failure by itself.
Here's a video where they cleaned it and then it started flickering. So he then cleaned the pick-up sensor, which fixed it. So enthralled's projector might just have dust interfering with the sensor circuitry and just needs a cleaning?
https://www.youtube.com/watch?v=sIzSaYaM6bg
I've fixed a LCD panel in a 5.1 surround receiver, monitor, modem and TV by replacing bad capacitors.
Between YouTube and internet articles, it was pretty easy. But capacitors are cheap, so the out of pocket expense isn't that much if the repair doesn't take.
I bought a Hakko 808 de-soldering gun from Fry's Electronics after my first repair and it's AWESOME.
https://www.youtube.com/watch?v=mEgRHT1EqVA
Also, I buy my capacitors from DigiKey, they have a huge inventory of high quality capacitors.
Plus, their prices are great and they don't tack on extra for "handling".
http://www.digikey.com/
3700 lamp hours puts him at the end of bulb life and I'm sure it wasn't used exclusively in smart eco mode for 3D Gaming.
But it certainly couldn't hurt to take it apart, like RAGEdemon said, dust can cause failure by itself.
Here's a video where they cleaned it and then it started flickering. So he then cleaned the pick-up sensor, which fixed it. So enthralled's projector might just have dust interfering with the sensor circuitry and just needs a cleaning?
I've fixed a LCD panel in a 5.1 surround receiver, monitor, modem and TV by replacing bad capacitors.
Between YouTube and internet articles, it was pretty easy. But capacitors are cheap, so the out of pocket expense isn't that much if the repair doesn't take.
I bought a Hakko 808 de-soldering gun from Fry's Electronics after my first repair and it's AWESOME.
Also, I buy my capacitors from DigiKey, they have a huge inventory of high quality capacitors.
Plus, their prices are great and they don't tack on extra for "handling".
[quote="RS422"][quote="D-Man11"].
I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, [/quote]
Wow! It is possible - play games via 3D-Vision/3DTVPlay in this resolution?! How I can do this? I have BenQ W1080ST...[/quote]
It was unstable, so I wouldn't recommend it. But you need to create two Custom Resolution profiles, one for 96hz and one for 48hz. I discovered by accident that 3D would engage if I also had the 48hz profile, without it 96Hz would only do 2D. I also had to remove the hardcap of the pixel clock on my HDMI out, using the solution from ToastyX. People were using his clock unlocker on 2K CatLeap monitors, so I figured I'd give it a go using a GTX 480. GTX 9XX GPUs would not require a clock unlocker on the HDMI output since they have HDMI 2.0 support, so that's a non issue. The limitation is in the projectors software and hardware. Plus HDMI is crappy interface, IMO. If you try this, use a "short high quality" cable. HDMI.org used to have a good video that showed the pitfalls of higher speeds via HDMI, but they've removed it. HDMI 2.0 doesn't increase the capability of the cable to carry more electrons, it gains bandwidth by new video compression methods.
EDIT: they didn't remove the video, here it is, it will give you insight into HDMI and why it fails using long cables. http://www.hdmi.org/learningcenter/videos_higherspeed.aspx
D-Man11 said:.
I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX,
Wow! It is possible - play games via 3D-Vision/3DTVPlay in this resolution?! How I can do this? I have BenQ W1080ST...
It was unstable, so I wouldn't recommend it. But you need to create two Custom Resolution profiles, one for 96hz and one for 48hz. I discovered by accident that 3D would engage if I also had the 48hz profile, without it 96Hz would only do 2D. I also had to remove the hardcap of the pixel clock on my HDMI out, using the solution from ToastyX. People were using his clock unlocker on 2K CatLeap monitors, so I figured I'd give it a go using a GTX 480. GTX 9XX GPUs would not require a clock unlocker on the HDMI output since they have HDMI 2.0 support, so that's a non issue. The limitation is in the projectors software and hardware. Plus HDMI is crappy interface, IMO. If you try this, use a "short high quality" cable. HDMI.org used to have a good video that showed the pitfalls of higher speeds via HDMI, but they've removed it. HDMI 2.0 doesn't increase the capability of the cable to carry more electrons, it gains bandwidth by new video compression methods.
Why not get a new bulb for your W1080ST?
Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607
Latest 3Dmigoto Release
Bo3b's School for ShaderHackers
The transition in gradients are supposed to be smooth.
http://www.projectorcentral.com/BenQ-HT1085ST.htm
Your color issue might be due to the color wheel failing, I've no idea, never looked into color wheel issues before.
You should check YouTube for videos that show your problem and there might even be an easy fix.
In the future, I recommend installing a dust filter on the air inlet ports on the projector - if not already installed. Dust is the main cause of not only fast bearing decline, but also a washed out look, when dust builds up on the colour wheel.
I don't believe the HT1085ST is 3D vision compatible. Are you planning on hacking the inf?
I believe that with some of the newer 3D (not 3D Vision) projectors that support frame packing over HDMI 1.4, you might be able to get 3D Vision to work via 3D Play 1080p @ 120fps effective at 60Hz. I have seen people hint at this but no-one has explicitly confirmed it. If the HT1085ST doesn't support this feature, you may wish to get a projector that does.
Some old timers like me choose to stay at 720p/800p @ 120Hz simply for the 120fps in 2D, but depending on your taste, you might prefer 1080p @ 60Hz instead if you could potentially get frame packed 120FPs from the 60Hz.
Windows 10 64-bit, Intel 7700K @ 5.1GHz, 16GB 3600MHz CL15 DDR4 RAM, 2x GTX 1080 SLI, Asus Maximus IX Hero, Sound Blaster ZxR, PCIe Quad SSD, Oculus Rift CV1, DLP Link PGD-150 glasses, ViewSonic PJD6531w 3D DLP Projector @ 1280x800 120Hz native / 2560x1600 120Hz DSR 3D Gaming.
To debug this properly, instead of just guessing, you can do it methodically. Jumping directly to the color wheel as the problem simply because colors are wrong is not good diagnostic technique.
Based on your image, I also don't think this is a bad bulb. Bad bulbs tend to flicker or be extra dim. (BTW, replacing bulbs is super easy, anyone can do that, but it's $100 bulb, so it should be worth it, like 2000+ hours on a bulb.)
Your image looks like a bad cable to me.
Bring up the On screen menu. Does it have color problems? The on screen menu is internal to the projector and thus pulls pieces out of the display chain (computer and cable) that could be causing problems.
Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607
Latest 3Dmigoto Release
Bo3b's School for ShaderHackers
It might be better if he took a picture of http://tft.vanity.dk/MonitorTest_pureHTML.html or http://www.lagom.nl/lcd-test/contrast.php to show the color gradients.
@RAGEdemon I was able to get 96Hz frame sequential at 1920x1080P, it flickered too bad and caused instability on my projector. I used the HDMI pixel clock patch from ToastyX, I wouldn't try it now that my warranty is expired :)
If I bumped the refresh to 100, 110, 120 it defaulted to frame packed and my projector would only show a tall skinny image of two frames stacked.
Sorry, my bad. I missed that he said 'flickering'. I got to 3700 hours and said "new bulb."
I guess the real question is what kind of flickering? Brightness flickering could be bulb, color flickering could be the color wheel. Flickering would also not likely be cable.
@enthralled: what kind of flickering does it seem? How does it look with the projector menu up, and maybe even test pattern?
Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607
Latest 3Dmigoto Release
Bo3b's School for ShaderHackers
Wow! It is possible - play games via 3D-Vision/3DTVPlay in this resolution?! How I can do this? I have BenQ W1080ST...
4K3D on passive LG OLED 4K TV 65C6V, GTX 1080 Ti, Win 8.1 64 Pro, i7-7700, 3D-Vision 2 on Benq LW61-LED PJ. HTC Vive. Panasonic Z-10000 3D Camcorder
3700 lamp hours puts him at the end of bulb life and I'm sure it wasn't used exclusively in smart eco mode for 3D Gaming.
But it certainly couldn't hurt to take it apart, like RAGEdemon said, dust can cause failure by itself.
Here's a video where they cleaned it and then it started flickering. So he then cleaned the pick-up sensor, which fixed it. So enthralled's projector might just have dust interfering with the sensor circuitry and just needs a cleaning?
I've fixed a LCD panel in a 5.1 surround receiver, monitor, modem and TV by replacing bad capacitors.
Between YouTube and internet articles, it was pretty easy. But capacitors are cheap, so the out of pocket expense isn't that much if the repair doesn't take.
I bought a Hakko 808 de-soldering gun from Fry's Electronics after my first repair and it's AWESOME.
Also, I buy my capacitors from DigiKey, they have a huge inventory of high quality capacitors.
Plus, their prices are great and they don't tack on extra for "handling".
http://www.digikey.com/
It was unstable, so I wouldn't recommend it. But you need to create two Custom Resolution profiles, one for 96hz and one for 48hz. I discovered by accident that 3D would engage if I also had the 48hz profile, without it 96Hz would only do 2D. I also had to remove the hardcap of the pixel clock on my HDMI out, using the solution from ToastyX. People were using his clock unlocker on 2K CatLeap monitors, so I figured I'd give it a go using a GTX 480. GTX 9XX GPUs would not require a clock unlocker on the HDMI output since they have HDMI 2.0 support, so that's a non issue. The limitation is in the projectors software and hardware. Plus HDMI is crappy interface, IMO. If you try this, use a "short high quality" cable. HDMI.org used to have a good video that showed the pitfalls of higher speeds via HDMI, but they've removed it. HDMI 2.0 doesn't increase the capability of the cable to carry more electrons, it gains bandwidth by new video compression methods.
EDIT: they didn't remove the video, here it is, it will give you insight into HDMI and why it fails using long cables. http://www.hdmi.org/learningcenter/videos_higherspeed.aspx