A long time ago I opened my Epson EH-TW5900 and after seeing the screw count and mainboard on the inside I immediately put everything back together :D But after seeing your video and how the optical assembly was mounted I decided to give it another go. Long story short: Thanks for the video, it did really help! It took almost 3 hours but was totally worth it. After 10k hours and running on its 3rd lamp the picture is as good as new. No colored hotspots, small/big dots, dust.... just a really good picture again. The worst part was cleaning the lenses and polarization filters. Eeek... and just one screw was left after finishing! :D
Hey Daniel. I bought an eh-th6000 second hand 2 month ago. Now there is one vertical stripe, maybe 10 pixels wide, which stays blueish greenish. So on this stripe, it doesn't work anymore. I think the guy never clean the Beamer. They where using in a celler for gaming for years. You said you teared down yours for cleaning? I just wonder, if I could fix and clean mine myself. Or would you say it is not worth trying? Cheers, Tim
@@badabumbum1 Hi Tim, ich hoffe mal, nicht komplett daneben zu liegen - glaube aber, dir auch auf deutsch antworten zu können....? ^^ Für mich hat sich das Auseinandernehmen/Reinigen wirklich gelohnt. Aber die Flecken/Verfärbungen waren definitiv durch Ablagerungen/Dreck auf den Glaselementen und Filtern verursacht. Ich kann mich auch an keinen Bereich erinnern, der wirklich "gerade von oben nach unten" fleckig gewesen wäre, das war alles eher rundlich. Am schlimmsten war bei mir die Ecke unten links im projizierten Bild, nach dem Anschalten und während der Aufheizphase war da alles sehr stark verfärbt, wurde aber nach 10-15 Minuten Laufzeit etwas besser.
@@DanielCikic servus, ja ne, dann haben wir verschiedene Probleme. Ich habe einen echten Pixelfehler. Also ein ganz klarer Streifen von Pixeln bildet die Farben nicht mehr richtig nach.
More interesting than I thought of in the beginning. A lot of complicated optics inside. Now I understand why these beamers where so expensive. Nice Video!
Thanks so much for this tear down as I own one and smoked in the same room(don't do anyone), got tar etc. over lens ,filters etc. and went from white to tan-orange colour instead, put back together wrong and I see where I went wrong now. THANKS HEAPS Mate.
I once repaired an old CRT TV and it had a golden case (that was fashion then). When I started cleaning, I found out that the TV was actually silver.... the "golden" color was only from smoking. ;-)
I own an Epson TW6100 and the frist two years I loved this projector. Then the the HDMI inputs died, but my GPU died, too, the same moment I connected my pc to the wall (never found out what went wrong). Epson took it in and replaced the hole mainboard (still in warranty) but since I had a few lags and problems. I used the projector mostly in ECO mode, because its still very bright, but quite. After about 1500h the lamp starts to flicker very slightly. I read this might happen to ECO-mode only lamps and you could burn the lamp "in" in a few hours in normal mode, which indeed helped. Right before I hit the 2000h (about 3 years after buying) the lamp starts to flicker again, but this time much stronger and a red shimmer starts to form on the top of the picture (my projector is panel mounted, top-to-bottom). This time it wont go away. Just a few hours later a very sharp, blue bar faing black to one the edge was visible (only) on a black screen (during normal scenes its invisible). I just want to let you know, just if someone stumble across this video considering to buy an epson...btw the shutter for dark scencs is very loud. I used an old Sony 720p projector before, its shutter was completely silent and build like a camera shutter. I turned the shutter off after the first 10min of using it. Thanks a lot for this teardown, I really hope I have still a few hours left, before I will "take it apaaaart".
My projector started flickering at 40Hz or 50Hz powergrid frequency after about 3000hours very anoying. One would think rhe lamp fequency would be set to over 200Hz so this wouldn't be a problem ever or that the psu had a cleaner power output. But the major problem is they are not sealed at all well against dust. I have a eb-1985wu because of rhe brightness and i gor dust inside the lens and on the lcd panels within 2 years in a clean home..
The reddish green filter on the white light input is a hot mirror to reflect the IR light away from the light engine to prevent excessive heating of the LCD panels.
17:00 The second filter looks magenta in colour as it's likely just a "reflect green / transmit red and blue" filter. It seems to only pass red when in the projector because it's relying on the first dichroic filter to reflect / block the blue light. ;) AFAIK, it's cheaper to make a filter which reflects only one narrow range of colour than transmits (ie. a "bandpass") I used to mess with replacing the arc lamp and colour wheel in DLP projectors with high-power RGB LEDs, and a small FPGA which essentially simulated the colour wheel motor and sequenced the LEDs correctly. I had to buy small dichroic filters for combining the RGB light from the three LEDs, or pinch the filters or prism block from LCD projectors. Although the RGB LEDs were relatively low power back then (around 24 Watts each) compared to the arc lamp, they often made up for it by not having the colour wheel filters blocking most of the light. The combining filters were needed for the LEDs to get decent efficiency with the small surface area of the DLP chip. If you simply place three RGB LEDs next to each other, it becomes extremely difficult to collect all of that light into the narrow path required. This is an optical parameter known as "etendue", and is one of the big challenges of such as system. The surface area of the high-power LEDs is designed to match the area of different types of DMD too, so it would be near-impossible to place the LEDs close enough to each other without using the combining filters. (The Luminous Phlatlight LEDs I was using had a large emitter area of roughly 8mm square.) Always interesting seeing a projector teardown. I'm sure this one could have been repaired, but what I found with a lot of LCD projectors is that the "Blue" LCD panels tended to fail quite often, probably due to UV damage from the arc lamp. 1080p projectors can still sell for a fair amount when working, but yeah, the arc lamps always cost too much. btw, the shutter on that projector will mainly be for the Dynamic Contrast enhancement. It's how the manufacturers can claim things like a 15,000 :1 contrast ratio, by closing the shutter more during the darker images / scenes. A good test for measuring the true contrast ratio is a simple black and white checkerboard pattern. There aren't many ways to trick that test. ;)
Thanks, I had the exact same problem however I had the original housing and I just replaced just the bulb with an OEM bulb and I too had the same beeping noise that you showed in the video. Luckily I had another original Epson Bulb + casing and when I put that one in, I had no beeps. The OEM bulb did operate visually ok, so no issues there but I couldn't get rid of the beeping noise and although it wasn't loud, like loud loud, it did annoy me knowing it was there in the background and I was conscious that because it wasn't the original and I had the beeping I didn't want the bulb to explode and cause more damage to the unit. The bulb housing that surrounds the OEM bulb doesn't contain the extra (what feels like porcelain round on the tail of the bulb vs. the original one) I wonder if this was the problem. I'm going to try and buy another original stand alone bulb only and fit that to the original housing to see if I can use that as a spare. I'm going to take a guess here in that because it wasn't the original bulb, the Epson device can detect somehow if its not an original and basically says we'll if you don't buy Epson this is the side affects of being a tight ar$e. :-)
Hewlett Packard's first LaserJet models in 1980 with 128 kilobytes of memory, was held together by hundreds of screws. HP seemed to love screws but probably also why it cost so much. Then the modern devices are nearly screwless, and fall apart just pressing some locking tabs.
Haha! I love how Germans call projectors "beamers"! My first IT job was for a German company and they kept asking me to setup a beamer in the conference room and I was like "I don't think I can make it fit" and they though I was the crazy one. That was a good time.
32:00 think of the cube consit not of 2 but of 4 prisms glued together ;) and filters are designed that light passes them in narrow angle therefore not that fancy when looking throu them directly nice video (y)
So total how many blowers or fans inside? 3 or 4? My lamp and temp are blicking red at the same time. what could be the problem? DO you still have the lamp? Thanks.
I've a 9100, which looks pretty similar. I like many users have an well known issue when using a non OEM Epson lamp. The Lamps work perfectly, but the projector does this very annoying high pitch siren beep often. It sounds like a generated twin tone kind of noise, an alarm. I think this is common across most Epson projectors. Are you aware of anything on he internals what would gernate this stupid noise, which could be disabled, discoconnted, or killed!!? This would help a LOT of people :)
(I’m three years late, but) I’m having to do a tear down of my projector (same model) for a repair, and I’ve mixed up the three polarizing lenses corresponding to the three RGB LCD lenses, attached to the ribbon cables. Are those three polarizers the same? If not, how can I differentiate between them?
As you say, it's three years ago since I made the video... I only know what's in the video. The parts are long gone. You could test the polarizers to see if they are the same. Do you have an LCD clock or similar? Look throught the polarizer to that clock. If you turn the polarizer, the clock LCD will appear brighter or darker, depending on the relative angle between the two. So you can see if they are same or different. Otherwise... trial and error ;-)
Wow, that's a pretty nice projector to bin... newer than my 8500UB in my home theater! But this isn't a home theater projector, the giveaway was the built in speakers, and the 40,000:1 dynamic contrast (the 8500UB is 200,000:1 dynamic contrast) I wonder what -is- was actually wrong with it...
Hi. Very good film. please halp me. I have problem with my EH-TW6100. auto iris error. Is this automatic iris in your film 12:55 sec? Hand up and subscryb.
I don't know if they call that an iris. I would call it a shutter because it's the only way to switch the projector light on and off within the time of a button push.
A long time ago I opened my Epson EH-TW5900 and after seeing the screw count and mainboard on the inside I immediately put everything back together :D
But after seeing your video and how the optical assembly was mounted I decided to give it another go. Long story short: Thanks for the video, it did really help!
It took almost 3 hours but was totally worth it. After 10k hours and running on its 3rd lamp the picture is as good as new. No colored hotspots, small/big dots, dust.... just a really good picture again. The worst part was cleaning the lenses and polarization filters. Eeek... and just one screw was left after finishing! :D
Hey Daniel. I bought an eh-th6000 second hand 2 month ago. Now there is one vertical stripe, maybe 10 pixels wide, which stays blueish greenish. So on this stripe, it doesn't work anymore.
I think the guy never clean the Beamer. They where using in a celler for gaming for years.
You said you teared down yours for cleaning?
I just wonder, if I could fix and clean mine myself.
Or would you say it is not worth trying?
Cheers, Tim
@@badabumbum1 Hi Tim,
ich hoffe mal, nicht komplett daneben zu liegen - glaube aber, dir auch auf deutsch antworten zu können....? ^^
Für mich hat sich das Auseinandernehmen/Reinigen wirklich gelohnt. Aber die Flecken/Verfärbungen waren definitiv durch Ablagerungen/Dreck auf den Glaselementen und Filtern verursacht. Ich kann mich auch an keinen Bereich erinnern, der wirklich "gerade von oben nach unten" fleckig gewesen wäre, das war alles eher rundlich.
Am schlimmsten war bei mir die Ecke unten links im projizierten Bild, nach dem Anschalten und während der Aufheizphase war da alles sehr stark verfärbt, wurde aber nach 10-15 Minuten Laufzeit etwas besser.
@@DanielCikic servus, ja ne, dann haben wir verschiedene Probleme. Ich habe einen echten Pixelfehler. Also ein ganz klarer Streifen von Pixeln bildet die Farben nicht mehr richtig nach.
More interesting than I thought of in the beginning. A lot of complicated optics inside. Now I understand why these beamers where so expensive. Nice Video!
That is a real teardown.
Thank you for your effort.
Thanks so much for this tear down as I own one and smoked in the same room(don't do anyone), got tar etc. over lens ,filters etc. and went from white to tan-orange colour instead, put back together wrong and I see where I went wrong now. THANKS HEAPS Mate.
I once repaired an old CRT TV and it had a golden case (that was fashion then). When I started cleaning, I found out that the TV was actually silver.... the "golden" color was only from smoking. ;-)
nice......a lot of engineering inside .....
...now put everything back together again....
I own an Epson TW6100 and the frist two years I loved this projector. Then the the HDMI inputs died, but my GPU died, too, the same moment I connected my pc to the wall (never found out what went wrong). Epson took it in and replaced the hole mainboard (still in warranty) but since I had a few lags and problems. I used the projector mostly in ECO mode, because its still very bright, but quite. After about 1500h the lamp starts to flicker very slightly. I read this might happen to ECO-mode only lamps and you could burn the lamp "in" in a few hours in normal mode, which indeed helped. Right before I hit the 2000h (about 3 years after buying) the lamp starts to flicker again, but this time much stronger and a red shimmer starts to form on the top of the picture (my projector is panel mounted, top-to-bottom). This time it wont go away. Just a few hours later a very sharp, blue bar faing black to one the edge was visible (only) on a black screen (during normal scenes its invisible). I just want to let you know, just if someone stumble across this video considering to buy an epson...btw the shutter for dark scencs is very loud. I used an old Sony 720p projector before, its shutter was completely silent and build like a camera shutter. I turned the shutter off after the first 10min of using it.
Thanks a lot for this teardown, I really hope I have still a few hours left, before I will "take it apaaaart".
My projector started flickering at 40Hz or 50Hz powergrid frequency after about 3000hours very anoying. One would think rhe lamp fequency would be set to over 200Hz so this wouldn't be a problem ever or that the psu had a cleaner power output.
But the major problem is they are not sealed at all well against dust. I have a eb-1985wu because of rhe brightness and i gor dust inside the lens and on the lcd panels within 2 years in a clean home..
The reddish green filter on the white light input is a hot mirror to reflect the IR light away from the light engine to prevent excessive heating of the LCD panels.
17:00
The second filter looks magenta in colour as it's likely just a "reflect green / transmit red and blue" filter.
It seems to only pass red when in the projector because it's relying on the first dichroic filter to reflect / block the blue light. ;)
AFAIK, it's cheaper to make a filter which reflects only one narrow range of colour than transmits (ie. a "bandpass")
I used to mess with replacing the arc lamp and colour wheel in DLP projectors with high-power RGB LEDs, and a small FPGA which essentially simulated the colour wheel motor and sequenced the LEDs correctly.
I had to buy small dichroic filters for combining the RGB light from the three LEDs, or pinch the filters or prism block from LCD projectors.
Although the RGB LEDs were relatively low power back then (around 24 Watts each) compared to the arc lamp, they often made up for it by not having the colour wheel filters blocking most of the light.
The combining filters were needed for the LEDs to get decent efficiency with the small surface area of the DLP chip.
If you simply place three RGB LEDs next to each other, it becomes extremely difficult to collect all of that light into the narrow path required. This is an optical parameter known as "etendue", and is one of the big challenges of such as system.
The surface area of the high-power LEDs is designed to match the area of different types of DMD too, so it would be near-impossible to place the LEDs close enough to each other without using the combining filters.
(The Luminous Phlatlight LEDs I was using had a large emitter area of roughly 8mm square.)
Always interesting seeing a projector teardown. I'm sure this one could have been repaired, but what I found with a lot of LCD projectors is that the "Blue" LCD panels tended to fail quite often, probably due to UV damage from the arc lamp.
1080p projectors can still sell for a fair amount when working, but yeah, the arc lamps always cost too much.
btw, the shutter on that projector will mainly be for the Dynamic Contrast enhancement. It's how the manufacturers can claim things like a 15,000 :1 contrast ratio, by closing the shutter more during the darker images / scenes.
A good test for measuring the true contrast ratio is a simple black and white checkerboard pattern. There aren't many ways to trick that test. ;)
Hi, thanks you very much for your video! It helped me a lot to remove a little dust on one of the polarized screen !!! love you ❤!
Great video. The screw count reminded me so much of the body counter in Hot Shots! Part Deux :D
Hot air makes it easy to tear down Epson gear. Their use of plastic is amazing.
thats video what i had waited a long..... nice tear down, we have learn very nice.....
The dichroic cube is useful for combining red greed and blue lasers.
Thanks, I had the exact same problem however I had the original housing and I just replaced just the bulb with an OEM bulb and I too had the same beeping noise that you showed in the video.
Luckily I had another original Epson Bulb + casing and when I put that one in, I had no beeps. The OEM bulb did operate visually ok, so no issues there but I couldn't get rid of the beeping noise and although it wasn't loud, like loud loud, it did annoy me knowing it was there in the background and I was conscious that because it wasn't the original and I had the beeping I didn't want the bulb to explode and cause more damage to the unit. The bulb housing that surrounds the OEM bulb doesn't contain the extra (what feels like porcelain round on the tail of the bulb vs. the original one) I wonder if this was the problem. I'm going to try and buy another original stand alone bulb only and fit that to the original housing to see if I can use that as a spare.
I'm going to take a guess here in that because it wasn't the original bulb, the Epson device can detect somehow if its not an original and basically says we'll if you don't buy Epson this is the side affects of being a tight ar$e. :-)
The device at 21:55 is a prism whose job is to ensure all of the light entering the projection engine is traveling in the same direction.
Hewlett Packard's first LaserJet models in 1980 with 128 kilobytes of memory, was held together by hundreds of screws. HP seemed to love screws but probably also why it cost so much. Then the modern devices are nearly screwless, and fall apart just pressing some locking tabs.
Haha! I love how Germans call projectors "beamers"! My first IT job was for a German company and they kept asking me to setup a beamer in the conference room and I was like "I don't think I can make it fit" and they though I was the crazy one. That was a good time.
What do you understand by "beamer"? That thing from Star Trek or an expensive german car?
32:00 think of the cube consit not of 2 but of 4 prisms glued together ;)
and filters are designed that light passes them in narrow angle therefore not that fancy when looking throu them directly
nice video (y)
So total how many blowers or fans inside? 3 or 4? My lamp and temp are blicking red at the same time. what could be the problem? DO you still have the lamp? Thanks.
I've a 9100, which looks pretty similar. I like many users have an well known issue when using a non OEM Epson lamp. The Lamps work perfectly, but the projector does this very annoying high pitch siren beep often. It sounds like a generated twin tone kind of noise, an alarm. I think this is common across most Epson projectors. Are you aware of anything on he internals what would gernate this stupid noise, which could be disabled, discoconnted, or killed!!? This would help a LOT of people :)
greate job!
Thank you! I'm pretty good in destroying things...
(I’m three years late, but) I’m having to do a tear down of my projector (same model) for a repair, and I’ve mixed up the three polarizing lenses corresponding to the three RGB LCD lenses, attached to the ribbon cables. Are those three polarizers the same? If not, how can I differentiate between them?
As you say, it's three years ago since I made the video... I only know what's in the video. The parts are long gone.
You could test the polarizers to see if they are the same. Do you have an LCD clock or similar? Look throught the polarizer to that clock. If you turn the polarizer, the clock LCD will appear brighter or darker, depending on the relative angle between the two. So you can see if they are same or different.
Otherwise... trial and error ;-)
hi i have epson eb-x7 and eb-x11 the 2 projector have one error it's led opower orange light continous what's the problen and how can i resolve it
Glass cube is a dichroic prism. Have one on my desk at work acting as a small paperweight 😀
I hope You have assembled it all back? :-)
May I ask what happened when you used lamps from other manufacturers? I have different issues and don't know if it's related to that
Wow, that's a pretty nice projector to bin... newer than my 8500UB in my home theater! But this isn't a home theater projector, the giveaway was the built in speakers, and the 40,000:1 dynamic contrast (the 8500UB is 200,000:1 dynamic contrast) I wonder what -is- was actually wrong with it...
Did you figure out what was wrong with it?
Hi, do you know what protocol/interface use to communicate with the main the lcd screens? can they be reused as displays on other projects?
Almost everyone uses Texas Instrument LCD panels so they should be interchangeable..
The. Cube is worth loads money if undamaged
Shine a light through the diametric cube
Shine some light into the cube from lens side, like for the splitter!
Focus that f*ck ?
You're not turning into AvE are you ? ;-)
Hey, do you still got those lcd's my projector needs it. Sell it to me.
Sorry I don't have them anymore...
@@PlaywithJunk ahhh... That's too bad. That junk is my treasure now)))
Hi. Very good film. please halp me. I have problem with my EH-TW6100. auto iris error. Is this automatic iris in your film 12:55 sec? Hand up and subscryb.
I don't know if they call that an iris. I would call it a shutter because it's the only way to switch the projector light on and off within the time of a button push.
Wanna buy LCD panels from this beamer!
Sorry... already scrapped :-(
From the video title I knew it was made by a German-speaking person :D
Beamer ... I know
24:14 lol
Man if all it needed was a lamp I'm not sure I'd call that junk...
amazing my shutters make loud noise on start up being sent back to epson for repair out of warranty ha ho
She’s not skookum.
Too much cooling fans
check your mail sent you a special mail today :)