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HELP!!! Benq w5000 - Half the picture is gone - Page 2

post #31 of 43
Quote:
Originally Posted by Big Lebowski View Post

Do you mean this cannot be a software issue where syncing gets sometimes longer or may be exaggerated by using long HDMI wires?

I was referring to the fault where half the screen is garbled. Reflowing is resoldering the integrated circuits on the pcb using infra red or hot air.
Lookup reflowing on youtube.
post #32 of 43
Quote:
Originally Posted by rapsac View Post

I was referring to the fault where half the screen is garbled. Reflowing is resoldering the integrated circuits on the pcb using infra red or hot air.
Lookup reflowing on youtube.

I was not familiar with term reflow but I know about these resoldering ways.

I still wonder are all of these half screen problems always hardware related (failing chip or soldering)? I mean mine has been doing this for nearly three years and still it has not failed completly or gotten worse. It just does that sporadically after resyncing.

I had Optoma HD80 before this unit and I remember it doing sometimes some half screen errors which also were sporadic and went away without doing anything. As far as I remember that was common thing with that projector and did not lead to permanently damaged picture.
post #33 of 43
Quote:
Originally Posted by ctmooregottapee View Post

i've had mine off six times now

wow, sounds like my previous experience with certain highly regarded projectors. However my BenQ has been exceptional.

Quote:


i've had major video faults three times, two different fans go bad, the same fan twice, and i've had the dreaded red lights of death and still do occasionally, along with the lense ring snapped off.

How many hours your unit had before first service trip? Did fans die completly or just got noisier. Which fan died twice?
In my unit one of the fans been keeping slight abnormal sound very long time but it has not gotten worse. I can only hear it when powering unit down and when cooling fans are still running but color wheel has stopped.

Quote:


if your unit doesn't have the deathly red lights no start up issue, then keep a hold of it and consider yourself lucky.

I hear you. I really have had very little troubles with my W5000.
Thats why I really hesitate to get this minor issue I see sporadically taken care of. Most likely with my luck I enter a world of pain chasing a problem free unit.

I haven't seen red lights issue ever with my unit. I have had 2 or 3 bad startups during three years but they were different. It was blinking green led but did not start then.

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they rebuilt the innards thrice, and the final time they wanted to refurb swap.
i really don't like the risk of a refurb swap because those units are generally broken returns, and the refurb houses don't get paid to do it right, just to move inventory.
[it is just like used cars, if you buy one, your buying a car someone else more than likely traded in because it had some problem they couldnt' resolve]

I agree. Refurbs are a big risk and that is why I made sure I could get my own unit fixed if I wanted.

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if you are not paying for shipping - lucky you and what warranty plan is that?

European.

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i've seen all sorts of video artifacts when the board goes. generally on startup i get some vertical bar patterns.

Did you see during BenQ warm up screen? Mine has never showed any video errors during that screen. Only after syncing to source after warm up screen.

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it is just not a fast unit as far as that goes, nor has friendly screens to cover that up.

Sorry I don't get what you mean?`

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the other video error that happens is vertical slices of the video get shuffled around

Mine has always horizontal thin lines when it happens. Sounds different from vertical errors most here seem to have.

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to be fair, i've put hella hours on this thing;
i'm at 17,346 total hours, the last rebuild at 13,110 hours.
i had my second bulb last 7,400 eco hours before i finally swapped it under a warranty contract

Incredible hours! I would never even expect projector to last that long.
From my past experiences with many brand projectors most of them felt to me like they were build to last under 2000 hours. Usually lamps needed change around 1000 hours etc.

My BenQ has already well over 2000 hours with original lamp and is still bright enough. If it would last another three years and 2000 hours I would be more than happy to throw it away. Most likely upgraditis will hit me well before that. Actually already has but I'm still very happy with extremely natural picture my W5000 has.

My big dilemma here is whether I just should take a risk and not get my unit repaired hoping it will not get worse, or take a risk and get it repaired under warranty which with my luck could lead to new problems or damaged unit during shipping.
Anyway its been acting like this for nearly three years. I expect it should have already died if it was going to.
post #34 of 43
Bump.
post #35 of 43
I own a W5000 also...bought it AS IS with half picture covered with vertical white bars. Sometimes it will shut off after 1 minute with different led configuration (replace lamp or temp or fan failire) I've tried to get documentation from TI regarding some chips but all datasheets were available under a NDA agreement. I dealt with electronics before so I started to investigate the problem. This projector along uses 2 x DDP3021 DLP processing chips. Each chip has it's external flash memory and RLDRAM chip.

I found out that one power supply circuit for a RLDRAM chip is damaged.
The RLDRAM chip was also damaged(being exposed to higher voltage levels who knows for how long). I've changed all necessary components and the result was a fully working projector with a beautiful image. I've had 800h since then with no other problem. Very pleased with picture quality on this model.

Other information you might find useful. The same DLP processing solution (2xDDP3021) was offered in Optoma HD81/HD81-LV maybe in HD80 also. Those projectors have issues with half image gone too.
post #36 of 43
Quote:
Originally Posted by cream View Post

I own a W5000 also...bought it AS IS with half picture covered with vertical white bars. Sometimes it will shut off after 1 minute with different led configuration (replace lamp or temp or fan failire) I've tried to get documentation from TI regarding some chips but all datasheets were available under a NDA agreement. I dealt with electronics before so I started to investigate the problem. This projector along uses 2 x DDP3021 DLP processing chips. Each chip has it's external flash memory and RLDRAM chip.

I found out that one power supply circuit for a RLDRAM chip is damaged.
The RLDRAM chip was also damaged(being exposed to higher voltage levels who knows for how long). I've changed all necessary components and the result was a fully working projector with a beautiful image. I've had 800h since then with no other problem.

This is interesting. Many peoples have been reporting shut down problem with blinking error leds. Did this happen without vertical lines displayed too?
I wonder if most problems with this model are from the bad DMD-card.

How hard was it to replace the components? I guess we are dealing with surface mounted components requiring special skills and equipments?
Also was it hard to find needed replacement components?

Is DMD-chip soldered on the DMD-card or is it removable (socketed)?

You said damage was due to over voltage. Was this just faulty power supply circuit on the DMD-card or could it be that projectors power supply fluctuate?

I always (and many others seem too) thought this problem was caused by heat breaking up components and soldering joints. Maybe it may not be that simple and it is certain component that fails and cause this like it was in your case. Or maybe it is the heat that cause this component to fail eventually and lead to this problem. It would be interesting to know.

Quote:


Very pleased with picture quality on this model.

This is the reason I still have this unit and why I'd like to make sure it will work in the future. While this unit does not have very good contrast ratio it has very natural colors and gray scale if you calibrate it and it makes the picture very pleasant.


Quote:


Other information you might find useful. The same DLP processing solution (2xDDP3021) was offered in Optoma HD81/HD81-LV maybe in HD80 also. Those projectors have issues with half image gone too.

I had the HD80 before I purchased BenQ and I did experience some half image issues (slighty different looking. In HD80 it was usually just darker one side of the screen in certain cases while in BenQ it also has very thin horizontal lines overlayed on the picture when that happens). However they were sporadic just like what I'm experiencing with my BenQ.

I also don't remember hearing so many HD80 owners had their unit failing completly displaying half image all the time even many of them reported seeing half screen problem occasionally. However I have seen several W5000 owners telling their unit failed completly eventually.

I don't know what to do with my unit. It has been doing sporadic half screen for nearly three years without getting any worse. Also it has never displayed them during BenQ warm up screen and never in the middle of watching film. They only occur sporadically in my unit (like once in a month, sometimes more often even same day) just after resyncing but I never needed to power down my unit for that because it always goes away in seconds. I was hoping this is a feature and not a sign for some bigger failure waiting to happen eventually.

Isn't this DDP3021 very commonly used? I see many new projectors today using it too. Is it so that many projectors today use only one DDP3021 due to newer 0.65" chip? I don't see them all mentioning dual chip like it was the case with 0.95" DMD. I just don't see why new DMD would make that difference because if my understanding is right this chip is feeding image to DMD-chip. Maybe it is due to lower color wheel speed and less color wheel segments that makes the difference how many DDP3021 chips are needed.
post #37 of 43
Hello,

I have repaired 4x BENQ W5000 projectors with the same fault. Half the image gone (vertical lines). The culprit is in the DMD board (the one mounted vertically). A mosfet (the one closest to the lamp )responsible for power supply of one of the RLDRAM chips fail in time. It may or may not burn the RLDRAM chip itself and the protection diode. If somebody is still interested in the repair, let me know, I can help.

The same applies to W20000 model which is the same as W5000 just another DMD chip.
post #38 of 43
-for the vertical bar video errors, or half screen errors, once they start, they don't get better in my cases. a restart might make it go away for a second at first. it has never forced a pj shutdown or blinked any status lights on the pj.

it also will happen during the power up screen

DMD board IIRC is what the repair order said was the issue.
the pj still had all my personalized settings when it came back so they didn't gut it completely.


-i've never encountered horizontal lines


-i've never had a forced shutdown in the middle of operation. the three red lights happen after a failed startup (blinking green status, but no pj light).
i would say this issue is some sort of fault being triggerd at startup so the pj doesn't complete startup. once the fault is triggered, the pj refuses to try and startup again, some sort of safety memory i guess. unplug and wait is the fix to get it to try and startup again, maybe give it a shake or say a prayer so it doesn't fail again. once you encounter the three red leds, the issue slowly grows worse.


-for fan issues, i've run the gamut of different noises, whines to squeals to a hamster dying in there. i had one fan fail completely emitting that burning smell with the pj refusing to start. you can often manipulate the fans to get over their sound issues by going into the service menu and manually cranking them up and down.
i've only had problems with the last two fans in the path, not the first two.
post #39 of 43
Similar issue with half screen gone / Black white bars..... not being a tech type, can you spell out exactly what you replaced. It's sounds pretty common. I don't think sending it off to BenQ is worth it at this point...... My tech guy is pretty handy so please let me know the steps you took and where you purchased the parts. Thx....
post #40 of 43
look above for the best wording of what board is at fault

My repair tickets didn't spell out all the exact details. As I noted, all the settings were the save as when I sent it in, so obviously that board that has the memory for that is not touched
post #41 of 43
Quote:
Originally Posted by cream View Post

I own a W5000 also...bought it AS IS with half picture covered with vertical white bars. Sometimes it will shut off after 1 minute with different led configuration (replace lamp or temp or fan failire) I've tried to get documentation from TI regarding some chips but all datasheets were available under a NDA agreement. I dealt with electronics before so I started to investigate the problem. This projector along uses 2 x DDP3021 DLP processing chips. Each chip has it's external flash memory and RLDRAM chip.


I found out that one power supply circuit for a RLDRAM chip is damaged.

The RLDRAM chip was also damaged(being exposed to higher voltage levels who knows for how long). I've changed all necessary components and the result was a fully working projector with a beautiful image. I've had 800h since then with no other problem. Very pleased with picture quality on this model.


Other information you might find useful. The same DLP processing solution (2xDDP3021) was offered in Optoma HD81/HD81-LV maybe in HD80 also. Those projectors have issues with half image gone too.
I have also a Benq w5000 projector where sometimes half the picture is covered with vertical bars, it happens not every time. I think it happens when it gets hot. Can you please explain what components you changed and where to get them. Was it dificult to change them?
post #42 of 43
My proj totally died and Benq is telling me that they need to replace main board and it is not available.so they are offering me a trade up for w7000 for $1300.i am confused what to do as my projector was perfectly fine until it died.
Cream can youhelp me.
post #43 of 43
Dear Cream

Can you sen me some information about the RLDRAM that you have changed in DMD board of the W 5000?
You refer to PMD 1000 chip near to the mosfet Q3? Can you tell me if there are another components that is necessary to be controlled?
I will appreciate much your help...!
Thanks in advance, i wait for your precious information.
Best regards

Paolo Brandinu
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