EIZO CX270 - No signal but Backlight and Panel works, logo works, admin menu works. OSD doesn't. What?!

[CapLeaker]

weird. I would say there shouldn't be any AC there either. Maybe the caps on the PSU are bad?

[vf fa]

I think so too. Tested them and the seem to work. Maybe it's some kind of weird design implementation, although I can't think of any reason why. Anyways, so far the monitor works flawless and I can't complain (except the brightness is awful with just 130cd/m² max). So I guess I'll replace that with LEDs next.

Just wanted to thank both of you again, you helped me a lot. Really glad this forum exists

[kierkegaardtechnocrat]

Hello. Signed up for this forum to post this. I hope it isn't wrong to post in this thread, but it's exactly my problem and only two months old.

I also have the "four-yellow-one-blue-blinking" issue with an EIZO monitor, but mine is (or was ☹ ) a CG277.
You're the only person on the internet I could find who was able to fix it. I found the problem mentioned a few other times on other forums, but no-one ever get even remotely close to anything. Not at all like what you did here.

Problem has been going on for a while. Monitor works perfectly fine for long, long time if I don't unplug it. Sadly, I unplugged it again, and I thought I could get it to start working again by hard-restarting the monitor many times (i mean the on/off switch by the power cable input).

The last time this happened, I needed many tries over two days to get to a stage where the menu would boot up, but 0% signal was displayed (even though it should work). Then I kept restarting until finally at some point it just started working perfectly again, perfect image, stable for months, no issues at all.

Now I switched it off again. This time, I was still able to get to the "menu-but-no-signal-stage" a few times, but couldn't reach the Display-Port-working stage anymore.
This time, during the "menu-but-no-signal-stage", I tried connecting via DVI, just to test it,and it worked right away, it actually displayed a perfect image via DVI. But I wanted the Display-Port working, so I started restarting again.

Now I can't even get to the "menu-but-no-signal-stage" anymore, even though I tried a lot.
I tried it for hours and hours, because it was a very expensive monitor, has 10bit color, 6ms, built-in-self-calibration...

Here is some actual hard data, which might be interesting or at least funny. I started logging my attempts at some point during this newest episode, to see if I can map the behavior somewhat.
I got to the "menu-but-no-signal-stage" after 61 restarts, then again after 45 restarts... and now I haven't gotten back after 500 (yes, five hundred, you can laugh) attempts.

Even if I would buy a new Eizo ColorEdge (which I can't afford), the new one's are 10ms, it seems. I also don't need more than 2560x1440... my current monitor was perfect for me, if only I hadn't turned it off.

Is there any way anyone could help me, please?

I read your theorizing about temperature, so I aimed my little USB fan into the air-holes of the frame to somewhat cool the interior, but it didn't help.

I had called EIZO the last time this happened, but they also gave me the "we don't know what 4xyellow1blue-blinking means". I've read this several times on the internet, seems that they always say that.
So EIZO couldn't help me, because my monitor is long out of warranty.

I still have an older 19" EIZO, which I bought years before the CG277. And that old 19" is still working...

Thank you for reading.

[CapLeaker]

I would heat the boards up, the psu and all with a hair dryer, so it is a bit warmer than hand warm, but not that hot you burn yourself. Then turn it on. If that “warm up” helped to start the monitor, it’s a capacitor problem. Also ribbon cables could be an issue, or hot FET’s and diodes mounted on a heat sink (cold solder joints), capacitors near a heat sink where they get hot could be an issue too. Happy hunting!

[vf fa]

Hey there.
Glad my thread was of some help, even though it might not have solved you issue (yet). I know the infuriating feeling of being the only one with a certain problem.

I agree with CapLeaker, do the heat test.
I would add that you might wanna have a look at the Eeprom ICs. Try gently pressing down on them with your finger during turn-on. I still kinda suspect a bad solder on one of the eeproms was my problem. Might be yours too.

Good.luck

[kierkegaardtechnocrat]

Thank you CapLeaker & vf fa !
Sadly, I'm not an electric engineer or the like, so I can't open up the monitor and mess around with it. I only posted here because you guys are the only one's who were able to fix this.
I tried blowing some warm air with a hair dryer through the ventilation holes, but it didn't help.
In case perhaps there's anyone in Berlin who could help, I would be very grateful. I'm sadly quite poor

Cheers.

[vf fa]

Thank you CapLeaker & vf fa !
Sadly, I'm not an electric engineer or the like, so I can't open up the monitor and mess around with it. (...)

Hm, well. You don't have to be an electrical engineer or anything alike to be allowed to do basic troubleshooting. I certainly wasn't when I started attempting repairs.
Most things are quite easy really. If you have a multimeter (even a very cheap or free one from Kleinanzeigen will do), you can already do a lot of basic testing etc.

Furthermore, if you unplug the power cable (always both ends to be absolutely safe) and then press the power button for a few seconds, you should be absolutely fine. I wouldn't advice touching the PSU either way. Opening the monitor up (gently) most likely won't damage it.
do you have a soldering iron, or know a friend who has one and/or knows how to use it?

If the above is a little too much or you prefer someone to guide you in person, you can always reach out to someone like a professor or HiWi from the TU Berlin, im sure someone there would be happy to get you in contact with a electrical engineering student. I can't predict wether they may want something in return or not.

I'd love to help you in person but unfortunately I'm living in Saarland, so not exactly around the corner.

[vf fa]

So, just a quick update. The monitor has been working flawless ever since. Its kinda odd but im not complaining. I thought about it a few times and incidentally came across a thread on reddit where someone had a similar issue with an entirely different monitor but almost the same board logic. He solved the problem by resoldering the eeproms that apparently were placed on a spot that heats up a lot and cools down faster than the rest of the PCB. So basically inducing cold solders due to repeated thermal cycling. And as far as i can tell, this might have been the issue for me too. The Renesas Chip gets pretty warm very quickly and is also right next to a ventilation opening on the side.
Anyways, ill never know for sure and it kinda bothers me but im kinda glad that i have this 90% AdobeRGB display here now.

Cheers

[AndyLHK]

I joined the forum so I could add to this discussion. I've got an Eizo CG277 that stopped working after an electrical storm caused a power cut. It would power on but display only "No Signal". I took it to Eizo service who told me it was not repairable as they don't carry the part any more (they didn't tell me which part and were extremely uncommunicative about details).

Before throwing it away I tried one last time to turn it on and it worked! As above, after unplugging and plugging back in I get the blue / yellow flashing lights and "no signal". It seemed I could restart it only in HDMI mode but once it got a signal via HDMI it would also be fine with displayport.

More recently, I've realised that it will start up in any signal mode as long as I unplug the USB cable connecting it to my laptop first! Then I can plug the USB cable back in with no problems.

Although the current fix is easier than the one I was using, the problem has deteriorated to the point where I need to do this every time I power cycle the monitor - not just when it has been unplugged. I think this (worse) situation was caused by another recent power cut in my building. It certainly coincided with it.

Anyway, I hope the above might be useful to someone and any suggestions would be much appreciated!

Thanks, Andy

[CapLeaker]

I joined the forum so I could add to this discussion. I've got an Eizo CG277 that stopped working after an electrical storm caused a power cut. It would power on but display only "No Signal". I took it to Eizo service who told me it was not repairable as they don't carry the part any more (they didn't tell me which part and were extremely uncommunicative about details).

Before throwing it away I tried one last time to turn it on and it worked! As above, after unplugging and plugging back in I get the blue / yellow flashing lights and "no signal". It seemed I could restart it only in HDMI mode but once it got a signal via HDMI it would also be fine with displayport.

More recently, I've realised that it will start up in any signal mode as long as I unplug the USB cable connecting it to my laptop first! Then I can plug the USB cable back in with no problems.

Although the current fix is easier than the one I was using, the problem has deteriorated to the point where I need to do this every time I power cycle the monitor - not just when it has been unplugged. I think this (worse) situation was caused by another recent power cut in my building. It certainly coincided with it.

Anyway, I hope the above might be useful to someone and any suggestions would be much appreciated!

Thanks, Andy

What happens if the monitor works good for like 2 hrs, turn it off, wait 30 seconds and turn it back on? Or try warming up the main board with a hair dryer before startup?
As for the USB, there is a 2 port USB hub controller inside the monitor for control etc. Either something is wrong with your cable, or the hub controller chip or its power supply may be bad. every time you plug the usb into your computer, it’s gotta register in device manager in windows. See if everything is in order there.

[AndyLHK]

What happens if the monitor works good for like 2 hrs, turn it off, wait 30 seconds and turn it back on? Or try warming up the main board with a hair dryer before startup?
As for the USB, there is a 2 port USB hub controller inside the monitor for control etc. Either something is wrong with your cable, or the hub controller chip or its power supply may be bad. every time you plug the usb into your computer, it’s gotta register in device manager in windows. See if everything is in order there.

If it's been on for hours and I unplug it and plug it back in immediately it has the same problem. I'm on Mac and nothing unusual shows up in system report.
I'll try replacing the cable and also see if I can switch to the other USB port. Thanks, I'm not very techie - it didn't even occur to me to try a different cable even though it seems obvious once suggested 😂.

[MarcusAK81]

Hey @all,

have the same error here with my ColorEdge CG276. If the monitor is unplug from the power cable or switched off via the hardware-switch it takes hours or dsay to bring thme back to run. Mostly after some days the monitor starts to perate as usal again but no glue if there is any evidence for just wait tht time. Would be happy if there is an solution as it seems that many EIZO Monitors have the same issue.

[MarcusAK81]

Additional Info: EIZO Support seems to know that issue but does not provide any help.... This time, after 2 weeks of trying to bnring the monitor back to work it helps to switch off and on the monitor very fast and move the DisplayPort cable back and forward during start of the monitor. Now i have an UPS for the ColorEdge

[AndyLHK]

Additional Info: EIZO Support seems to know that issue but does not provide any help.... This time, after 2 weeks of trying to bnring the monitor back to work it helps to switch off and on the monitor very fast and move the DisplayPort cable back and forward during start of the monitor. Now i have an UPS for the ColorEdge

Did they fix the issue? Did you get any more info? Thanks

[vf fa]

Did they fix the issue? Did you get any more info? Thanks

Maybe. Problem is, these displays are either a) in warranty, in which case they will just replace them or b) out of warranty in which case they don't really care. And while they might offer a Mainboard or PSU replacement, it'll be pricey.

As Eizo is more of a "professional" brand, most customers are probably just buying a new one or need their display replaced asap, no matter what.

You could try writing to various countries Eizo support channels (use gpt for translate). It seems like they handle the requests in very different ways depending on country and person.