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Chippy can you seriously quit being such a whiny baby. The fact of the matter is Tamlin is actually contributing to the thread were as you are not. I think in your last 10 posts or so on this thread you have added absolutely nothing.
I created this thread a long time ago and for quite some time it has been extremely useful in getting to the bottom of the initial 2690 flaws, getting units properly reparied, and also talking about reviews and end user tests. I would very much appreciate if we could keep the thread being a useful tool rather then a bickering session especially from seomoen who does not have one or want to buy one.
I noticed that on the Eizo CE240W as well, but S-PVA panels have color shifting anyway, so it wasn't a big deal. The problem wasn't visible on a black screen. The backlight bleeding and faint horizontal lines on the NEC are bigger problems, but NEC doesn't seem to care.Tamlin_WSGF said:The Eizo CE240W/CE210W also have reports on left side being brighter then the right side, but I don't recall them using the U-shaped CCFL.
travbomb said:1. Horizontal Lines - No other reports of this outside of yours and no one in engineering can find this.
2. Appears yours are within the rules of backlight bleed. Otherwise service would have sent another one.
3. Lag - this will happen on a display like this because of the frame buffer used to help enhance colors. Most displays are going to have some sort of lag if they are used for color work at all.
4. Tearing at 480p - most likely due to the connection between the PS3 and the display since i image you are changing connectors at some point.
Basically engineering siad if you are that picky about it to go ahead and buy the Eizo. there really is nothing that can be done.
Maybe I'm just not understanding something. Can someone explain to me why that's acceptable on a color-critical monitor? NEC seems to think so.
I noticed that on the Eizo CE240W as well, but S-PVA panels have color shifting anyway, so it wasn't a big deal. The problem wasn't visible on a black screen.
Tamlin, can you make a test on your monitor with the images and checkpatterns provided by ToastyX, and tell us if you can see everything properly, please?
I think they are capacitors, with two pins each. They are connected (following the board-wiring) between the small transformer to the right of them and a cooled transistor/ic at the left of them. It's interesting to know that whoever designed it already knew these would be noisy parts, since they had glued the two together with some type of kit. In my case breaking them apart (i.e. making the glue obsolete) cancelled a lot of the noise already.The green parts are more difficult to identify because they are in an epoxy casing but it looks like they are some kind of ferrite / 3-terminal cap / LC-filter or perhaps a poly film capacitor.
Two weeks ago I took delivery of a new NEC 2690 and have been plagued by the loud annoying high pitch buzz everyone is talking about. This occurs when the display is warmed up for a half hour or so and then the brightness goes below 50%. The internet dealer I bought the unit from has offered to exchange my unit for a new one. The serial # begins with 711. Will I be inheriting the same problem if the new unit begins with 711 also? Are there any good displays out there with the same beginning serial numbers?
TIA.
jon
My guess is the two cylindric inductor/coil thingies can easily be replaced by a different brand or heavier values. There are others on the same board that don't generate any noise at all, so it's not that these two are 'broken' parts, they are just getting too much load or are falsely positioned in the design.In your view, could NEC really fix the problem by using other components, or treating them in some way?
Yet they are grounded on one side, both of them probably have some capacitor-function too. Seem to be related to dissipating electrical load (that's what I meant with overloaded in this case). Put another one next to them, and they would probably stop making noise.The green things are probably not regular capacitors, but some kind of filter element with a ferrite or inductor inside. Capacitors don't make mechanical noise and the only way to "overload" one results in death.
I'm not so sure about this not being a tuned circuit. It's quite delicate matter it requires to deal with. The parts seem carefully selected either way..The inductors could probably be increased in value somewhat with no problem since this is not a tuned, resonant circuit and they have extremely poor tolerance by nature compared to other types of passive components.
Well, to bring up to date, those who have been following the noise saga of my 2690...I contacted the customer service rep of www.costcentral.com with crossed fingers. I explained the noise problem and asked for an exchange. I also told him I understood from postings on hardforum this was not an isolated problem and mostly affected units with serial # 's beginning with 711. He said they didn't know the serial numbers of the units in the warehouse but would see what could be done. Well, to make this brief...I sent the old unit back at their expense and just received a new display with a serial number beginning with 741. The unit is absolutely silent and thus far no dead pixels. I have almost gotten over spending so much money for a screen. I would just like to thank the members of this forum for all their extensive information and help.
jon
Yes, of course it is, but more honestly stated, it certainly has made us all a lot more eifersuechtig (jealous) than erleuchtet (enlightened), lolHope this small comment is a useful addition to all the info on this thread!
Yes, that's really a crap move by whoever designed these circuits, or who decided to use the parts that are used for it.nec europe lost another customer, as i am very sensitive about high pitched noises, produced by displays. i know several other designers that are too. i will surely not recommend the nec 2690 to them.
Does anyone know how easy or how long it takes to switch between the DVI-I and DVI-D inputs on the 2690? For example, if I had two PCs connected to each input or a PC on one and a PS3 on another, how convenient is the switch?
The high pitched noises pushed this one off of my list...