Repairs that require no spare parts at all are always the best. People should stop resetting the lamp hour counter as soon as a warning message appears. Lamps WILL explode and cause more damage compared to the few hours you will get from the lamp after resetting the hours. Excellent and most enjoyable work Frank!
So many people think that's some sort of hack, like it's a company conspiracy to make you change a lamp... Someday I need to do a video on the changes Ive noticed over the years with timers. At one point it was popular to shut down the projector after it's hours ran out. Then some companies (NEC) tried hiding the timer reset. Then we have the chips eeproms and PIC chip timers. I'm glad it's not so much beaten over people heads now. Plus dynamic lamp control has greatly extended the life span.
Your video was invaluable. I had a bulb blow spectacularly leaving shards of glass inside. After replacing the bulb and pulling out the pieces I was able to, the projector was shutting down after three minutes or so. Ultimately, I was able to remove the lamp fan using your instructions and found two additional pieces of glass inside that was locking it. After removing those pieces and reassembling (with no extra parts), the projector is working great.Thanks for putting together such a great video.
Hi, Frank. Thanks! Prior to replacing an exploded bulb, I had already bookmarked this video: so I did not despair when the thing powered off after a few minutes. Several days later, we fixed it. I am a little ham-handed and I HATE plastic clips. My wife even helped me with the disassembly. There was only one leftover screw and the projector works again beautifully !
Thank you so much for your video! I had exactly the same problem (piece of glass blocking the lamp fan) and couldn't figure out what was the reason of the automatic shutdown and temperature problem I had, until I found your video!!! great tutorial, you help me to save my beloved BenQ W2000. The lamp exploded after about 2000 Hours of use. BIG THANKS AGAIN TO YOU!
Great video, very helpful. If others have issues with it not powering on, it was shown off camera but he wedged something to keep the cover switch down when testing. I didn’t see this, buttoned it up except for the cover to test and had no power. I thought I left something unplugged and took it all apart before I realized there was a cover switch. Pressed it in and all worked fine.
Very helpful video. I just replaced my lamp last night. The video quality is great, and all appears to be working for about 4 minutes and the unit shuts off. Ill be giving this a try tonight. Thanks again!
Nice simple fix and can be done at home quite easily. I always fancied buying myself a small oscilloscope, but it would just sit in the drawer gathering dust. I remember my dad had a huge metal cased scope which had many knobs and a big round screen. Cheers Frank.
@@FixitFrank I ended up cutting off the blades as a temporary fix to get the fan spinning, while I wait for BenQ HQ to ship a replacement. Note I added an external fan to help keep the motherboard cool.
@@FixitFrank Model is an HT3550, first time opening up the unit and I found all fans pointing outward, I believed you mentioned in a video about the importance of having fans pointing in the right direction. I believed the fan stalled out from 4 years of dust build up. Thanks again for the videos!
That looks exactly like a w2000 which I repaired a few days ago. The colour wheel wasn't coming up to full speed after a minute or so shutting down. I had a feeling the light sensor was not detecting enough light. cleaning didn't help. Replaced it and that cured the problem. costing around 15 bucks. So, long live aliexpress! I had to make some adjustments to the c wheel in the service mode. Before changing parameters is good to note what the initial parameters were set to. so, if necessary you can reverse to default.
I'm pretty sure the w2000 is the European version of the 3550?. I never hear about them in the states. Interestingly the rom chip has w1110 on this model so ht2050 must be an afterthought as a part number. Someday I hope a BenQ engineer finds this channel and will answer some questions.
Nah, the owners tried to fix it first so I don't fault them. At least the same screws were together. I never fault people for trying. That said Ive seen some weird stuff from Benq refurbs.
Thank you Frank for the video! After watching this, I believe it is highly likely my HT 3050 has the same problem due to a lamp replacement, as all of 3 fans that I can see from outside are running. Do you provide similar paid repair services? If yes, I may consider sending the unit to you for that. Many thanks!
Hi Jay, I do but its kind of a weird thing at the moment. I am moving repair locations so its a bit messy. that said, if you want to contact me via email. use support@ the company that I listed the lamp from. I hate to be cryptic but I had to shut down my email due to too many contact requests so until my new system is up and running I have to do it this way.
Hi Frank, your videos were very very helpful for me cleaning out my old BenQ W2000 I sold to a friend that had been running for 8 years without a proper clean (and also with learning how to reach the service menu), and though that projector is now very clean and free of any visual orbs left by when my friend tried to use computer duster on it, when I run the lamp in normal mode (it also ramps up in eco but not as much obviously) it quickly goes from Temp 1 around 403 and LampOut/PwrOut/LampBlw/DMDIn around 2500-2700 (these being the targets as well), to temp 415-418 with fan speeds/targets in the 2700-3000 range. Do you have any idea what might be causing this? I am wondering if it has to do with me repasting the heatsink badly somehow, or a fan or sensor acting up maybe (though fanspeeds look like they're accurate from the readings and fan sound) I haven't torn it down again to check the heatsink, and I'm fairly sure the fans are in the right directions as I went back in and verified those. I have no idea where to find much info on servicing these so your videos have been my only source of information, thanks in advance if you have any tips
Make sure the fans are blowing the right way. Some blow in , some blow out. If they are all blowing the same direction that might be the issue. Also check the lamp blower fan(turbine fan) in the center. It kind of sounds like that isnt working right. I suspect you have a fan blowing the wrong direction though from what you are describing.
2 года назад+2
Hi @FixitFrank I congratulate you for your videos and your content, it's great and it has worked a lot for me, I live in Mexico in the state of Veracruz to be more exact... and here I haven't found any specialist in Projectors so I have had to get my hands on my projector, now I have it not working because I need a part that is the color wheel sensor, it is damaged but I cannot get it, so I was wondering if you could recommend me a site or if you could sell me the piece on ebay? If you have it that would be great. My projector is a benq W1070. Greetings!!!
I hear Veracruz is beautiful! For a color wheel sensor, you can email Time Projector , Gydz@timeprojectorlamp.com Send a picture of the old wheel sensor and your model #. They ship via DHL and take payment via PayPal so everyone is protected. Let them know I referred you. Gracias, Buena suerte mi amigo!
Hi Frank, thanks for the stellar video. Very helpful. I have the same benq 2050. My projector is working alright but I notice the fan on the left side of the fan up at the front(looking down from above) isn't spinning. Lampout, Pwrout, & LampBlw are at good target readings. Which fan is DMDin? both target and reading for DMDin are at zero. Any help when you have a moment is appreciated! Thanks
I think that is normal. That fan only comes on in high altitude mode if I recall correctly. Try setting it to HA mode and see if it kicks on. If you are not getting a temp error I would not worry about it but you can verify its operation that way.
Hi Frank ! Thank you so much for the video I had exactly the same problem ! I was able to fix the fan but not it won't power up... Power is flashing green and no other lights are on. After a min the fan will stop and the light will still flash. I reinstalled everything 2 times and the pin seems to be aligned. Do you know what could cause this ? Thanks !
Very helpful video Frank. I followed your procedure on my ht2050 tonight but didn't find any material in the blower fan. However, the fan was quite noisy and the projector shut off a few minutes every time after it's turned on. the light indicated a Fan3 speed off. Here is my question: Where do you buy an OEM replacement fan with quick shipping. Thank you!
Hi Frank, thanks for the video. I have a HT2050 that the blower fan is loud and gradually slows down after turn on - do you know the part number of that fan and where I might order a replacement? Thanks!
the part # is on the sticker of the blower fan, but you dont even need that. Just email the folks I use. gydz@timeprojectorlamp.com and let them know you need that fan.
@@FixitFrank Yah, I was hoping to have the new fan so I can open up and reassemble in one go! ;) I emailed that company a few days ago, haven't heard back. I think I figured out the fan is a SUNON MF60251V3-C010-G99
Hi Frank. After replacing an exploded bulb and cleaning up the central fan on benq 3050 service menu shows the temperature of 400-420. Seems a bit too high, the fans are blowing at 3000 but it doesn’t shut down due to overheating. Should I be concerned about the temperature?
If it's running happily, I would think its okay. The temp does sound awfully high though. Double check the fan speeds expected versus the fan speeds you are seeing. 400f is pretty high and 400c is REALLY high.
Hey Frank, I was almost sure that the problem was the blower fan but after taking it apart, nothing seams alarming, I thought a piece was stuck inside the blower because once the projector gets up to temperature, it starts making a high pitched sound kind of like something spinning and hitting something very fast and then turns off due to being too hot, but turns out it cannot be the blower because it spins perfectly well, and the sound looks like it comes from the color wheel but I cannot be sure because the two are so close to each other, and in the admin menu, I do have a blower sensor fault, I really cannot figure out the problem here... do you have any idea? and have you ever had the same high pitched noise problem? (same projector btw)
it could be the color wheel or the fan, but to tell which, I would take the blower fan out and make sure there is no other glass bits inside. As long as its clear of glass, then I would unplug the color wheel wire and try to fire up the proejctor. It wont ignite the lamp but the fans will come on. If its then quiet(without the color wheel connected) you will now that the color wheel was making the noise. It's definitely possible since the old lamp burst. It might have damaged the color wheel when it happened.
Thanks for your'e quick reply, I did take out the blower fan and nothing is inside, I have indeed isolated the problem to the black boxy looking thing to the left of the lamp which I believe is the color wheel housing, the sound produced is a really high pitched grinding sound kind of like angle grinding, so I think the color wheel itself is grinding against the housing but only when the projector gets up to temperature, and when it is producing the sound and I try to touch the housing, if I bend it a certain way I can get the sound to completly go away, do you have any idea what it could be?@@FixitFrank
there might be a little metal shield between the back of the color wheel and the front of the light tunnel. they can warp from the heat. If the lamp was replaced around when this started, make sure the new lamp has the right IR filter lens. it should have a reddish/blue/purpleish tint to it from certain angles. if its green or clear, thats a problem. that can cause the metal to warp and make that noise.
I don't know the fans in that model but almost always that error is a jammed fan. If you can see two axial fans turning them your blower fan is likely the culprit. If a lamp exploded at some point, they throw glass inside the fan and can jam it.
Hi Frank! Is it possible to save changes to the service menu? My Viewsonic PX747 had problem with fan 3, I replaced it, it's working fine, 2.5v measured with a multimeter, but the service menu still shows zero rpm. I disabled "Error Check Detection", but this setting returns to default after turning off the projector.
Hello, 2.5v sounds kind of high to me(if the v+ is 3v). That is a DC measurement of a PWM signal. If the new fan is not the same exact model of the old fan, or at the least it has to use the same stall/rpm reporting as the old fan. Many fans report back the RPM, some only pull low when spinning and then go high on stall. Give this video a look. ruclips.net/video/kCOSQ8dVZvc/видео.html I go over the fan thing a bit more clearly. As far as i know you can't over write many of those values The error check I think is for checking the ram or rom rather than for actual projector errors. Thats the case for optoma at least. I might be wrong on the viewsonic.
Thanks and Sorry about My "Brazilian english" I bought The same Brand and part number.and both, old and new fan hás the same value (2,5v) and The other fans too. Maybe My muitimeter is not good. I ddint mentioned before, but The problem began with a false temperature error and after replacing The temp sensor, The fan 3 error appears. Obs: viewsonic PX747 is The same of Benq TK800..
ahh, I would put the old sensor back in. Your english is perfectly fine! No need to apologize. Far better than my Portuguese. I'd have to see the fans operating to be sure. It just sounds high to me. I usually see them less than 2V. Ideally using a scope would tell you if the pulses are being outputted or not. One trick to troubleshoot is to run a 4.7K to 10K resistor from the stall monitoring of another fan to the fan in question. If the issue goes away then you know its the fan you are tricking.
@@FixitFrank Hi, Frank, thanks again! After some more tests, I identified an error in the Vset signal on the Fan Driver chip (G9941). This signal comes from the processor and the Fan Dfriver multiplied 4 times to deliver the voltage in Vout. I decided to put 12v on the Vout (jump from Vin to Vout), keeping the Fan at maximum speed and the projector in "Altitude Mode", Target RPM and Real RPM are aligned and everithig is working now.
You are very welcome! That is some fantastic troubleshooting for real. Those G9941 chips are pretty neat. I wish I had some time to play around with just the chip and some microcontroller. I dont know why or for what, but it looks like fun. Again, super cool troubleshooting and repair, enjoy the projector!
Hi Frank, I have a Benq MW526 and the bulb fan stopped working, a bit of dust on it but nothing else, now everything is clean as new, I replaced it anyway and still doesn’t run, any tips?
Go in to the service menu like he showed here and see what your speeds are/if all the fans are set to the proper speeds. I think it was the page #2 in the service menu to see.. you might have to re set the fans rpms again, I'm dealing with that now
Hey Frank I Have a EH500 Optoma projector. One of the leveling feet would turn but not adjust project to level it. So I took cover off to glue the screw to plastic holder so it wouldn't turn and the level feet would adjust projector. It worked but now projector want power up. Any Ideal what I may have over look putting cover back on.
Are you getting anything? LEDs ? Or is it like it's unplugged? I'd check the door switch and the tab on the lamp door and see if it's misalignment causing it.
@@FixitFrank I’m getting the bright orange light when I press power then it blinks soft orange. it use to be blue i thought when it light up? I will check the door switch like I seen on your video.
Hi Frank, I have a question that I'm sure others will be curious to know, is it possible to install an Optoma UHD 65 colour wheel into a UHD 60? Thanks
Maybe. I'm not 100% sure what the part# is. However if they are the same order of colors and the index mark is at the same color on both it will work. The motor specs are the same so electrically they are the same.
@@FixitFrank that's promising because the rgbrgb wheel out of a 65 in a uhd 60, would make it a cheaper option, with more correct colours as apposed to the standard rgbcy for the 60
Hey Frank! I have a question, I performed this exact procedure tonight. When I power on my device the lamp turns on but I don’t see the BenQ logo and I can’t see the menu/source. I’m getting no error lights either. Any idea what this could be? I’ve double checked the cables to my best ability. Thanks!
Hi Andrew, double check the alignment and connection to the dmd/dlp chip PCB. Also check to see if you offset the low voltage power pins when reinstalling the main board. If it worked enough when it came apart, it has to be something that isn't quite aligned when it went back together. When this happens to me, I usually start over and take it apart and reassemble things and I will usually find what I missed. The miss alignment of the power pins or dmd riser is the usual cause of that.
@@FixitFrank that was the exact problem. I didn’t have the board aligned. I thought it was the cable connections, but it was the board. Never thought I would find the projector repair side of RUclips, but you have been a great help. Thank you!
Repairs that require no spare parts at all are always the best. People should stop resetting the lamp hour counter as soon as a warning message appears. Lamps WILL explode and cause more damage compared to the few hours you will get from the lamp after resetting the hours. Excellent and most enjoyable work Frank!
So many people think that's some sort of hack, like it's a company conspiracy to make you change a lamp... Someday I need to do a video on the changes Ive noticed over the years with timers. At one point it was popular to shut down the projector after it's hours ran out. Then some companies (NEC) tried hiding the timer reset. Then we have the chips eeproms and PIC chip timers. I'm glad it's not so much beaten over people heads now. Plus dynamic lamp control has greatly extended the life span.
Your video was invaluable. I had a bulb blow spectacularly leaving shards of glass inside. After replacing the bulb and pulling out the pieces I was able to, the projector was shutting down after three minutes or so. Ultimately, I was able to remove the lamp fan using your instructions and found two additional pieces of glass inside that was locking it. After removing those pieces and reassembling (with no extra parts), the projector is working great.Thanks for putting together such a great video.
Hi, Frank. Thanks! Prior to replacing an exploded bulb, I had already bookmarked this video: so I did not despair when the thing powered off after a few minutes. Several days later, we fixed it. I am a little ham-handed and I HATE plastic clips. My wife even helped me with the disassembly. There was only one leftover screw and the projector works again beautifully !
Fantastic work!! I am so glad to hear this. Thank you so much for letting me know.
Thank you so much for your video! I had exactly the same problem (piece of glass blocking the lamp fan) and couldn't figure out what was the reason of the automatic shutdown and temperature problem I had, until I found your video!!! great tutorial, you help me to save my beloved BenQ W2000. The lamp exploded after about 2000 Hours of use. BIG THANKS AGAIN TO YOU!
Great video, very helpful. If others have issues with it not powering on, it was shown off camera but he wedged something to keep the cover switch down when testing. I didn’t see this, buttoned it up except for the cover to test and had no power. I thought I left something unplugged and took it all apart before I realized there was a cover switch. Pressed it in and all worked fine.
Thanks to this video! Fixed Benq W2000 bought on Ebay.
Awesome!! Congratulations! That makes me so happy to hear. Nice job and enjoy the projector!
Very helpful video. I just replaced my lamp last night. The video quality is great, and all appears to be working for about 4 minutes and the unit shuts off. Ill be giving this a try tonight. Thanks again!
Nice simple fix and can be done at home quite easily. I always fancied buying myself a small oscilloscope, but it would just sit in the drawer gathering dust. I remember my dad had a huge metal cased scope which had many knobs and a big round screen. Cheers Frank.
More tools the better!! Although a scope is kind of extra for most people.
Thanks very much for your video. Just fixed this exact same issue yesterday. Saved me a few bucks. Cheers!!
This helps I think I can get my fan to spin again after seeing this.
Thanks for the video!
You're very welcome!
@@FixitFrank I ended up cutting off the blades as a temporary fix to get the fan spinning, while I wait for BenQ HQ to ship a replacement.
Note I added an external fan to help keep the motherboard cool.
any chance the fan was reversed when you put it back in? some point in, other point out.
@@FixitFrank
Model is an HT3550, first time opening up the unit and I found all fans pointing outward, I believed you mentioned in a video about the importance of having fans pointing in the right direction.
I believed the fan stalled out from 4 years of dust build up. Thanks again for the videos!
Benq 1070 fixed, there was just SO much glass in there :O
Nice work!
That looks exactly like a w2000 which I repaired a few days ago. The colour wheel wasn't coming up to full speed after a minute or so shutting down. I had a feeling the light sensor was not detecting enough light. cleaning didn't help. Replaced it and that cured the problem. costing around 15 bucks. So, long live aliexpress! I had to make some adjustments to the c wheel in the service mode. Before changing parameters is good to note what the initial parameters were set to. so, if necessary you can reverse to default.
I'm pretty sure the w2000 is the European version of the 3550?. I never hear about them in the states. Interestingly the rom chip has w1110 on this model so ht2050 must be an afterthought as a part number. Someday I hope a BenQ engineer finds this channel and will answer some questions.
I really hope the person who slapped the refurbished sticker on that wasn't the one who put all the screws in the wrong places
Nah, the owners tried to fix it first so I don't fault them. At least the same screws were together. I never fault people for trying. That said Ive seen some weird stuff from Benq refurbs.
Thank you Frank for the video! After watching this, I believe it is highly likely my HT 3050 has the same problem due to a lamp replacement, as all of 3 fans that I can see from outside are running. Do you provide similar paid repair services? If yes, I may consider sending the unit to you for that. Many thanks!
Hi Jay, I do but its kind of a weird thing at the moment. I am moving repair locations so its a bit messy. that said, if you want to contact me via email. use support@ the company that I listed the lamp from. I hate to be cryptic but I had to shut down my email due to too many contact requests so until my new system is up and running I have to do it this way.
Again thank you! If the problem doesn't go away, I may contact you via the company email. Have a nice day Frank!@@FixitFrank
Hi Frank, your videos were very very helpful for me cleaning out my old BenQ W2000 I sold to a friend that had been running for 8 years without a proper clean (and also with learning how to reach the service menu), and though that projector is now very clean and free of any visual orbs left by when my friend tried to use computer duster on it, when I run the lamp in normal mode (it also ramps up in eco but not as much obviously) it quickly goes from Temp 1 around 403 and LampOut/PwrOut/LampBlw/DMDIn around 2500-2700 (these being the targets as well), to temp 415-418 with fan speeds/targets in the 2700-3000 range. Do you have any idea what might be causing this?
I am wondering if it has to do with me repasting the heatsink badly somehow, or a fan or sensor acting up maybe (though fanspeeds look like they're accurate from the readings and fan sound) I haven't torn it down again to check the heatsink, and I'm fairly sure the fans are in the right directions as I went back in and verified those. I have no idea where to find much info on servicing these so your videos have been my only source of information, thanks in advance if you have any tips
Make sure the fans are blowing the right way. Some blow in , some blow out. If they are all blowing the same direction that might be the issue. Also check the lamp blower fan(turbine fan) in the center. It kind of sounds like that isnt working right. I suspect you have a fan blowing the wrong direction though from what you are describing.
Hi @FixitFrank I congratulate you for your videos and your content, it's great and it has worked a lot for me, I live in Mexico in the state of Veracruz to be more exact... and here I haven't found any specialist in Projectors so I have had to get my hands on my projector, now I have it not working because I need a part that is the color wheel sensor, it is damaged but I cannot get it, so I was wondering if you could recommend me a site or if you could sell me the piece on ebay? If you have it that would be great. My projector is a benq W1070. Greetings!!!
I hear Veracruz is beautiful! For a color wheel sensor, you can email Time Projector , Gydz@timeprojectorlamp.com Send a picture of the old wheel sensor and your model #. They ship via DHL and take payment via PayPal so everyone is protected. Let them know I referred you. Gracias, Buena suerte mi amigo!
Hi Frank I. Have Fix. Mitsubishi Projector. It. Was. the lamp okay thank you very much
Great job!
Hi Frank, thanks for the stellar video. Very helpful. I have the same benq 2050.
My projector is working alright but I notice the fan on the left side of the fan up at the front(looking down from above) isn't spinning.
Lampout, Pwrout, & LampBlw are at good target readings.
Which fan is DMDin?
both target and reading for DMDin are at zero.
Any help when you have a moment is appreciated!
Thanks
I think that is normal. That fan only comes on in high altitude mode if I recall correctly. Try setting it to HA mode and see if it kicks on. If you are not getting a temp error I would not worry about it but you can verify its operation that way.
Hi Frank ! Thank you so much for the video I had exactly the same problem ! I was able to fix the fan but not it won't power up... Power is flashing green and no other lights are on. After a min the fan will stop and the light will still flash. I reinstalled everything 2 times and the pin seems to be aligned. Do you know what could cause this ? Thanks !
Nevermind it was the DLP chip, I had to push it a little and it clipped. Thanks :)
Very helpful video Frank. I followed your procedure on my ht2050 tonight but didn't find any material in the blower fan. However, the fan was quite noisy and the projector shut off a few minutes every time after it's turned on. the light indicated a Fan3 speed off. Here is my question: Where do you buy an OEM replacement fan with quick shipping. Thank you!
I bought mine from a company in China. Gydz@timeprojectorlamp.com is their contact info. They ship DHL And take paypal. Good company.
Hi Frank, thanks for the video. I have a HT2050 that the blower fan is loud and gradually slows down after turn on - do you know the part number of that fan and where I might order a replacement? Thanks!
the part # is on the sticker of the blower fan, but you dont even need that. Just email the folks I use. gydz@timeprojectorlamp.com and let them know you need that fan.
@@FixitFrank Yah, I was hoping to have the new fan so I can open up and reassemble in one go! ;) I emailed that company a few days ago, haven't heard back. I think I figured out the fan is a SUNON MF60251V3-C010-G99
That Sunon part # is correct, I was able to get the fan from BenQ customer service, $35 shipped. Thanks for the guidance Frank!
Hi Frank.
After replacing an exploded bulb and cleaning up the central fan on benq 3050 service menu shows the temperature of 400-420. Seems a bit too high, the fans are blowing at 3000 but it doesn’t shut down due to overheating.
Should I be concerned about the temperature?
If it's running happily, I would think its okay. The temp does sound awfully high though. Double check the fan speeds expected versus the fan speeds you are seeing. 400f is pretty high and 400c is REALLY high.
Hey Frank, I was almost sure that the problem was the blower fan but after taking it apart, nothing seams alarming, I thought a piece was stuck inside the blower because once the projector gets up to temperature, it starts making a high pitched sound kind of like something spinning and hitting something very fast and then turns off due to being too hot, but turns out it cannot be the blower because it spins perfectly well, and the sound looks like it comes from the color wheel but I cannot be sure because the two are so close to each other, and in the admin menu, I do have a blower sensor fault, I really cannot figure out the problem here... do you have any idea? and have you ever had the same high pitched noise problem? (same projector btw)
it could be the color wheel or the fan, but to tell which, I would take the blower fan out and make sure there is no other glass bits inside. As long as its clear of glass, then I would unplug the color wheel wire and try to fire up the proejctor. It wont ignite the lamp but the fans will come on. If its then quiet(without the color wheel connected) you will now that the color wheel was making the noise. It's definitely possible since the old lamp burst. It might have damaged the color wheel when it happened.
Thanks for your'e quick reply, I did take out the blower fan and nothing is inside, I have indeed isolated the problem to the black boxy looking thing to the left of the lamp which I believe is the color wheel housing, the sound produced is a really high pitched grinding sound kind of like angle grinding, so I think the color wheel itself is grinding against the housing but only when the projector gets up to temperature, and when it is producing the sound and I try to touch the housing, if I bend it a certain way I can get the sound to completly go away, do you have any idea what it could be?@@FixitFrank
there might be a little metal shield between the back of the color wheel and the front of the light tunnel. they can warp from the heat. If the lamp was replaced around when this started, make sure the new lamp has the right IR filter lens. it should have a reddish/blue/purpleish tint to it from certain angles. if its green or clear, thats a problem. that can cause the metal to warp and make that noise.
MX560,auto shutoff within a minute or so after turning on with temp lamp on..Is it blower fan? There's 2 fans spinning fine...
I don't know the fans in that model but almost always that error is a jammed fan. If you can see two axial fans turning them your blower fan is likely the culprit. If a lamp exploded at some point, they throw glass inside the fan and can jam it.
@@FixitFrank Thanks for the reply,will the lamp still turn on after exploded?
Definitely not. Once they burst they are finished. It would have been an older lamp, not your current one.
Hi Frank!
Is it possible to save changes to the service menu?
My Viewsonic PX747 had problem with fan 3, I replaced it, it's working fine, 2.5v measured with a multimeter, but the service menu still shows zero rpm. I disabled "Error Check Detection", but this setting returns to default after turning off the projector.
Hello, 2.5v sounds kind of high to me(if the v+ is 3v). That is a DC measurement of a PWM signal. If the new fan is not the same exact model of the old fan, or at the least it has to use the same stall/rpm reporting as the old fan. Many fans report back the RPM, some only pull low when spinning and then go high on stall. Give this video a look. ruclips.net/video/kCOSQ8dVZvc/видео.html I go over the fan thing a bit more clearly. As far as i know you can't over write many of those values The error check I think is for checking the ram or rom rather than for actual projector errors. Thats the case for optoma at least. I might be wrong on the viewsonic.
Thanks and Sorry about My "Brazilian english"
I bought The same Brand and part number.and both, old and new fan hás the same value (2,5v) and The other fans too. Maybe My muitimeter is not good.
I ddint mentioned before, but The problem began with a false temperature error and after replacing The temp sensor, The fan 3 error appears.
Obs: viewsonic PX747 is The same of Benq TK800..
ahh, I would put the old sensor back in. Your english is perfectly fine! No need to apologize. Far better than my Portuguese. I'd have to see the fans operating to be sure. It just sounds high to me. I usually see them less than 2V. Ideally using a scope would tell you if the pulses are being outputted or not. One trick to troubleshoot is to run a 4.7K to 10K resistor from the stall monitoring of another fan to the fan in question. If the issue goes away then you know its the fan you are tricking.
@@FixitFrank Hi, Frank, thanks again!
After some more tests, I identified an error in the Vset signal on the Fan Driver chip (G9941). This signal comes from the processor and the Fan Dfriver multiplied 4 times to deliver the voltage in Vout. I decided to put 12v on the Vout (jump from Vin to Vout), keeping the Fan at maximum speed and the projector in "Altitude Mode", Target RPM and Real RPM are aligned and everithig is working now.
You are very welcome! That is some fantastic troubleshooting for real. Those G9941 chips are pretty neat. I wish I had some time to play around with just the chip and some microcontroller. I dont know why or for what, but it looks like fun.
Again, super cool troubleshooting and repair, enjoy the projector!
Hi Frank, I have a Benq MW526 and the bulb fan stopped working, a bit of dust on it but nothing else, now everything is clean as new, I replaced it anyway and still doesn’t run, any tips?
Go in to the service menu like he showed here and see what your speeds are/if all the fans are set to the proper speeds. I think it was the page #2 in the service menu to see.. you might have to re set the fans rpms again, I'm dealing with that now
Like John John said and I would see if you have voltage at the fan. There is an ic that controls them. If no volts at the fan, the ic is suspect
@@FixitFrank what does it mean if the fans only run correctly at the right speeds on Altitude mode? (And your not at altitude)
Hey Frank I Have a EH500 Optoma projector. One of the leveling feet would turn but not adjust project to level it. So I took cover off to glue the screw to plastic holder so it wouldn't turn and the level feet would adjust projector. It worked but now projector want power up. Any Ideal what I may have over look putting cover back on.
Are you getting anything? LEDs ? Or is it like it's unplugged?
I'd check the door switch and the tab on the lamp door and see if it's misalignment causing it.
@@FixitFrank I’m getting the bright orange light when I press power then it blinks soft orange. it use to be blue i thought when it light up? I will check the door switch like I seen on your video.
Hi Frank, I have a question that I'm sure others will be curious to know, is it possible to install an Optoma UHD 65 colour wheel into a UHD 60? Thanks
Maybe. I'm not 100% sure what the part# is. However if they are the same order of colors and the index mark is at the same color on both it will work. The motor specs are the same so electrically they are the same.
@@FixitFrank that's promising because the rgbrgb wheel out of a 65 in a uhd 60, would make it a cheaper option, with more correct colours as apposed to the standard rgbcy for the 60
Hey Frank! I have a question, I performed this exact procedure tonight. When I power on my device the lamp turns on but I don’t see the BenQ logo and I can’t see the menu/source. I’m getting no error lights either. Any idea what this could be? I’ve double checked the cables to my best ability. Thanks!
Hi Andrew, double check the alignment and connection to the dmd/dlp chip PCB. Also check to see if you offset the low voltage power pins when reinstalling the main board. If it worked enough when it came apart, it has to be something that isn't quite aligned when it went back together. When this happens to me, I usually start over and take it apart and reassemble things and I will usually find what I missed. The miss alignment of the power pins or dmd riser is the usual cause of that.
@@FixitFrank that was the exact problem. I didn’t have the board aligned. I thought it was the cable connections, but it was the board. Never thought I would find the projector repair side of RUclips, but you have been a great help. Thank you!
I am so glad to hear it! Enjoy the projector!