I picked up an HD1000U a week or so ago and have been using the component input for my digital cable and DVD inputs. My laptop(an Inspiron E1705) has been hooked up using the old standard VGA analog cable.

I ordered a DVI to HDMI cable so I could digitally connect my laptop to my projector. When it arrived, I hooked it up and everything worked like a charm.

Then, with no changes that I can recall (I regularly check my nVidia display settings configurations and Powerstrip settings to further optimize things), suddenly it stopped working. My project will accept VGA cable input like before no problem. It accepts the component input no problem. However, there is no recognitiion whatsoever on the HDMI input port. I've quadruple checked my connections and my display settings and I'm totally at a loss. The DVI output from the laptop is still functioning as I've tested it with a standard DVI cable to an LCD monitor I had laying around. I don't have another HDMI input device around I can test the cable on.

At this point, I'm ready to reinstall video drivers on my laptop, but that feels like an act of desperation more than thoughtful deduction.

I thought maybe I was outputting a vertical refresh too high for the projector to recognize, but I've quadruple checked that I'm at 1280x720p @ 60hz.

Anyone got any suggestions?

Go buy an HDMI (or DVI as you may need another HDMI->HDMI cable) DVD player to check as you may need servicing if you've fried your HDMI port messing around with your laptop. You can always return the DVD player if you don't need it after your test.

You should not plug/unplug the HDMI when the PJ is on as you can fry the HDMI port. It's not design for hot swap like USB ports. Swapping cables on HDMI is dangerous when PJ or HDMI source is powered on (standby is OK). You should buy a HDMI switcher if you need to switch HDMI sources.

First off, shouldn't that be in the manual? I actually did read it, and I don't recall seeing anything that warned me of damaging the equipment by swapping.

Thankfully, I can't think of any instances where I've actually done any hot swapping with the projector on, but I can't be certain. In the event that I did, it was probably while troubleshooting this problem so I doubt it was the cause.

might be time to send it in for service?

Go buy an HDMI (or DVI as you may need another HDMI->HDMI cable) DVD player to check as you may need servicing if you've fried your HDMI port messing around with your laptop. You can always return the DVD player if you don't need it after your test.

you know.... I read this and was gonna comment, then I closed the thread to move on... but then I had to come back and simply say that this suggestion to do something inherently dishonest is troublesome.... :(

:confused:

A few things to point out here:

1) I'm a n00b at this, so suggestions on video settings from my laptop or on my projector to check are entirely appropriate.

2) I have 20 hours on this projector. I REALLY don't see how or why the thing should be failing to read signal from an input.

3) I have no recollection of unplugging the HDMI cable while the projector was on, so I am very doubtful that it's the cause.

4) Don't people troubleshoot around here?:)

Thanks in advance...

When you say, it suddenly stopped working, do you mean it stopped working as you were using it, or, the next time you turned it on it didn't work?

I take my laptop to work daily, so when I get home I often hook it up to the projector to web surf, check email, code, and/or play games.

One day I got home, hooked up the DVI end of the cable to my laptop, selected HDMI input on the projector, and hit Function | Display on the laptop to toggle outputs.

Nothing happened. The projector just sat with No Signal.

I had been toying with Powerstrip settings and nVidia display settings (adjusting for overscan, etc), but nothing I can think of that would cause the projector to ignore the laptop. I'm simply baffled...

I really...really hate to think the projector is on the fritz after only a couple hours of usage. Doesn't say much for quality if that's the case...

HDMI can be more fussy than other connections. Sometimes the equipment must be turned on in a specific order for the "handshake" to occur. And there are different types of DVI connector ends. The DVI-I is the one that works best. (It is more universal) The DVI-D connector end might not work sometimes. Here's a link. (http://www.datapro.net/techinfo/dvi_info.html)
There's another (better) link that went into the hows and whys and HDMI connectors but I can't find it right now and I'm late to get out the door.

Good luck!

Hm, so maybe it is an ordering problem.

Is there a basic guideline for what should be turned on before what?

In the case of an HDMI DVD player to an HDMI TV, what gets turned on first? I imagine I would follow the same paradigm (laptop == DVD player, TV == projector, etc).

Thanks for the feedback, btw.

Here's the cable I'm using: http://www.newegg.com/product/product.asp?item=N82E16812189058

and a picture:
http://images10.newegg.com/NeweggImage/productimage/12-189-058-02.JPG

Generally the laptop/DVD player needs to be on first and then HD1000u is turned on to recognize 1280X720X60 Hz resolution.

Ok, I'll start the sequence over again as soon as I get home and post my results.

I know you all await my feedback with bated breath.

In all seriousness, thanks for your help. This whole thing has been very frustrating to say the least.

In short: not good.

I changed my startup sequence and it made no difference. Whereas previously I could Function | Display to push my startup view to the projector, even at this level it is ignored.

I'm running right now off another stand-alone desktop (which has DVI out) and it also is being ignored by the projector. An interesting note is that when I booted the desktop with the projector connected via the same DVI to HDMI cable, it booted to the native resolution of the projector, 1280x720p.

It seems to me that both the laptop and the desktop can "see" the projector and "know" what resolution it wants. Neither configuration produces an image.

Back to square 1. It's either the cable (getting basic signal info but no picture data somehow?) or the projector is damaged. Or maybe I'm so tired and frustrated that I'm drawing false conclusions...

From your picture it looks like your're using a DVI-D dual link. A DVI-I connector might be better according to another article I read. (but can't find right now :( )

You might try it. (RS beckons) I have both types and only one (the DVI-I) works all the time.

Good luck.

What about going with an adapter and HDMI combo instead of a single converter cable?

Maybe these?

http://www.newegg.com/Product/Product.asp?item=N82E16814998202

and

http://www.newegg.com/Product/Product.asp?item=N82E16812189054

?

The pictures and descriptions don't match on the first link. And read the comments by buyers. ("Picture is right-description is wrong. The part I received is just like the picture (Male DVI to Female HDMI)"
and "DVI interface is DVI-I, meaning that it includes four extra pins for analog.")
I think this is the one you want but since description and picture are opposites I can't be certain. I think you want a Male DVI-I to Female HDMI to go along with an HDMI cable.
It wouldn't hurt to have the HDMI cable that could then be used with any DVI adapter.

I think you need to be clear on which DVI format you want. I'm not sure you want a digital connector with the output from a laptop. Is it analog? If it's analog you might be better with a DVI-I connector. The DVI-I will work with Analog or Digital. Or so they say.

I'm using the same kind of cable (DVI-D) you have pictured in your first picture posting above. But I'm using a Bravo D1 DVD player. It wants a Digital connector.

Good luck. You might just end up with a couple of extra connectors that may or may not come in handy someday. We all have a BUNCH of those in our cabinets! :D

DVI-I has the 4 extra pins for analog transmission right? They are above and below the horizontal piece in the pin array?

My laptop's DVI output is female and only has the horizontal piece. In short, I'm not sure a DVI-I connector would even be accepted :-(

How much signal/quality loss can I expect by running with a standard VGA cable? The only difference I saw was that the DVI-HDMI combo allowed me to push 1920x1080 to the projector @ 30hz. It looked terrible with tons of interlacing artifacts and a painfully obvious vertical refresh effect. I immediately dropped back down to 1280x720p where frankly, I couldn't tell much of a difference. Am I missing something?

One last question before I give up: I noticed that the Menu on my HD1000U is displaying 1080i now instead of 720p like I thought it was upon delivery. What drives the displayed resolution on that menu? Could this be related to my issue?

There is a forum here where you can talk directly to the HDMI guys. It might help you or it won't.

2 cents....plink...

http://images.monoprice.com/productlargeimages/25051.jpg is the correct cable you should be using. This may be your problem. Monoprice is the best place for cost-effective, quality cabling.

VGA should work fine but variable depending on your built-in video card and its drivers.

So...why is that exactly? That appears to be a single link DVI-D connector. Why would that be preferable for my laptop-to-PJ setup over my existing DVI-D dual link cable?

Also, is going with 28guage cable over 24guage going to introduce signal degredation/noise in your opinion?

I am having the same problem with an HDMI dvd player. It was working just fine then I went to hook it up again today...nothing. I do have component input but no HDMI. Looks like I call projectorpeople.com tomorrow. This sucks!

Other than that the projector has been awesome.

Llathos, 28 AWG is fine for less than 15 feet but you'll want 24 AWG for longer lengths over 15'.

Not sure if single link or dual link matters but on my HD1000u, I use the monoprice, single link cable to convert my HTPC 9800 Pro DVI-I port to HD1000u HDMI without issues. This same cable also works fine with my Bravo D1 which has DVI-D to HD1000u HDMI.

I called projectorpeople.com and they have not heard of burning out the HDMI or anything remotely like that. I did try hooking back up to my satellite and the HDMI works just fine. The guy from PP.com said he pulls the HDMI out under load and back in and it helps the handshake issue for him. I believe that is what the issue is and I don't know why it is repeatable.

http://www.newegg.com/product/product.asp?item=N82E16812105017
That is the cable I'm using on my HD1000U. I was worried about the length of 35 feet but needed 24 feet, at least, to run in through the ceiling and down the wall to the receiver.
The dam cable is thicker then the power cord that came with the HD1000U. Doesn't list the gauge but its HUGE.

The only problem is I had it hanging from the PJ for 2 days (temporary while I get things setup) and the end of the cord was BENDING from the weight of the cord!
Had to wrap it around the PJ........