Warning, stay clear of Benq w710st and possibly w1080st due to in spec fault - AVS Forum
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post #1 of 11 Old 12-13-2012, 01:59 AM - Thread Starter
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Hi,
Cut a long story short.

The w710st has a sligtly brighter image on the left half of the screen, as the bulb gets used more this issue becomes more so at around 600 hours i clearly see a darker side and a brighter side.
Whats white on the left is grey on the right and slightly out of focus, colours are allso muted slightly on the right hand side, it was 40 days old when i first sent it back for repair,2 repairs and it couldnt be fixed.

I have ben fighting tooth and claw for a exchange or refund, exchange could of been offered but a new unit has the same issue techs said.

Here is a quote from the repair techs
Quote:
“We received a projector where the complaint was "darker on one side of the image".

We can see this phenomenon but it is only very slight. We have tried an alternative lamp and have replaced the optical engine but still there is one side very slightly darker than the other.

We took a good machine from the warehouse and compared but found both to be exactly the same. We feel the machine is in good order and working within the limits of its design, we do not feel we can improve any further from its current condition.”

The shop that sold it me ignore my emails, luckily after threatening the sale of faulty goods act they picked it up and are offering a full refund.

Below quote is from benq this morning, i did say i have been fighting tooth and nail, Benq really does suck!!!
Quote:
Dear Michael,

Thank you for your patience in this matter.
I have escalted this case to our product specialists and also to our head office in Taiwan.
the response I have recieved is that what you are experiencing is not seen as a defect but as a limitation within the specifications of this model. I can therefore not offer a refund or an exchange for another model.



Regards

BenQ Europe
http://benq.co.uk

Please be aware that you will find it very hard to get a refund if this issue bothers you.

They have stated the issue is related to the tech and its in spec, hardly, imagine watching your tv with a brighter and darker side, it would be returned and they'd be tok of the shelfs most likely.

Benq really need to have a warning notice on the box and sale page for the w710st stating the image is degraded due to the short throw tech, if id of known this id not have brought it.

YOU HAVE BEEN WARNED!

i certainly wont be buying the w1070 as i now know what benq are really like, ther customer service is nil!

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post #2 of 11 Old 01-03-2013, 02:09 AM
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Reminds me of this BenQ topic.
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post #3 of 11 Old 01-03-2013, 09:14 PM
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Are you serious? Is this REAL? Not doubting you OP, but if this issue is widespread, these products need to be taken off the shelves.

And I was keeping an eye out on the W1070 too.
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post #4 of 11 Old 01-04-2013, 06:59 AM
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Personally, I would have liked the op to include a pic to see the extent of the defect. Most may not even notice, even though the BenQ tech did admit to also seeing it. Then it becomes a matter of personal standards as to whether it's acceptable or not. I appreciate the warning nonetheless.

bg
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post #5 of 11 Old 01-04-2013, 07:15 AM
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post #6 of 11 Old 01-23-2013, 05:13 AM
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THX for waning.

By the way, do you have the pic of differently bright image?
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post #7 of 11 Old 01-25-2013, 11:38 AM - Thread Starter
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Quote:
Originally Posted by smokarz View Post

Are you serious? Is this REAL? Not doubting you OP, but if this issue is widespread, these products need to be taken off the shelves.

And I was keeping an eye out on the W1070 too.
Yes it was real, googlling showed the worst scenario as google page is white, of course once i seen it i could see it most of the time in most things if it was abright screen.

Quote:
Originally Posted by garciab View Post

Personally, I would have liked the op to include a pic to see the extent of the defect. Most may not even notice, even though the BenQ tech did admit to also seeing it. Then it becomes a matter of personal standards as to whether it's acceptable or not. I appreciate the warning nonetheless.

I had people here that did notice, i allso had people say they could'nt see it but then after a few minutes of testing and me explianing they could allso see it, fair doo's the test's was on white or single coloured screens from mspaint.
I tried taking a pic, the cameras i have was never ever going to see the difference so picture was no good.

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Originally Posted by 3dprojector View Post

are you the same guy?

http://3dvision-blog.com/forum/viewtopic.php?f=27&t=2667

Yes that's me.
I asked benq for a refund or change to a w1070 and i pay the difference, as you can see from the email from the repair techs and the email refusing refund or replacement are good and bad, one admits it the other says so what frown.gif

After that email i done what had tobe done and posted my info at the sites im at as a warning that has tobe heard as the terrible customer service ect nearly had me with a £480 paper weight hence the reason i got the h5360bd not long after and sent the benq for repair and started the crap proccess of not going anywhere, lucky the shop i got it from was very good and after 3 month refunded me in full under the sale of faulty goods act.

Quote:
Originally Posted by gmovin View Post

THX for waning.

By the way, do you have the pic of differently bright image?

Camera did'nt show it i'm afriad.



Sorry i took so long in posting , this was just a information post and then i washed my hands, the info needed tobe out there !

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post #8 of 11 Old 01-25-2013, 03:53 PM
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The problem is not OFTEN exactly the same intensity across different units of the same model, so exchange it for another w710st if they let you and it might be better. It just depends how lucky your sample is generally and how the warranty of each MFR handles it. Some are stricter than others in letting you get replacements. It sounds like you got a bad sample.

Get on the phone with their manager and explain to him that you would like it to be exchanged (not fixed), and maybe they will send you another unit?

This isn't rare on projectors, there can be a whole SLEW of similar and related issues to this problem, one is called a white field uniformity and the other a brightness uniformity problem. It is not completely model specific, it can happen across MANY models. This model might have the issue more than some Benq's (not sure). The Mitsubishi hc4000 also has this issue, but Mits will easily keep letting you exchange it until you get a better sample. Though I will say that generally the issue is more noticeable on a new lamp, not on an old one (but if the uniformity error is see on darker scenes more, than I can see how it could be more visible on an older lamp). Oh, my Viewsonic Pro8200 also has a similar issue, the right side has a slight RED tint, but it is only noticeable in all white test patterns and maybe VERY VERY rarely in a shot of all clouds or snow. My Benq w7000 does not have the issue, although on some test patterns on grays I can see a slight strobing affect that is causing a tiny uniformity issue (but not visible in normal viewing). Many people in these forums have exchanged their projectors multiple times to get a better sample with better uniformity.

Actually a similar issue also shows up on some higher-end LCOS projectors, my JVC has brighter corners than in the middle (common problem on JVC's), although this is not white field uniformity but rather brightness uniformity. The Epson 5010/5020 is another projector that often has a white field uniformity issue, and it can show some unwanted color tint in a white field test pattern. According to your logic we should avoid any projector that does not have perfect white uniformity or brightness uniformity. Some of the above projectors have it pretty seriously as well (Especially the Mits hc4000 can and Epson 5010/5020), but as I noted you can exchange it and get a better unit.

I would say the only fault so far with this is the way Benq CS responded to you, they should have offered to replace the w710st with another one, because I am fairly sure different units will have the issue at varying levels of intensity.


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post #9 of 11 Old 01-25-2013, 11:06 PM
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Quote:
Originally Posted by coderguy View Post

Actually a similar issue also shows up on some higher-end LCOS projectors, my JVC has brighter corners than in the middle (common problem on JVC's), although this is not white field uniformity but rather brightness uniformity.
QFT

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post #10 of 11 Old 01-31-2013, 04:40 PM
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I am dead set on getting the W710st next month for my first projector until I read about the brightness flaw on one side of the screen. Should I be concerned and rethink on which projector to get?
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post #11 of 11 Old 04-11-2013, 05:16 PM
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I have own the benq w1200 for a year . I can tell you that benq is a strange company. First I have to say the blue ray quality is nothing short of spectacular.
occasionally it looks like your looking through a window its so sharp. My 120 inch screen from 12 feet back looks better than any movie theater. That being said it is a defected product. There is a audio delay so that the lips are out of sync. That could be fixed if you have a dvd player that has a audio/ video sync function
There is a ghosting around the border of moving objects which could be fixed by turning cfi on, saving settings and then turning cfi off. It took me a few months to figure it out.
I think benq sells the best quality for the price but there product testing department has to be the worst of all the manufactures.
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