Elo TouchSystems ET1915L - how to open?

[tmcw]

Just wondering if anyone has had any experience opening one of these up?

Stand came off with 4 screws, but there aren't any obvious notches to insert knives, etc., to pry the bezel open. Don't want to destroy any clips trying too hard, so hopefully someone here has had some experience.

Monitor was found in a recycling skip (dumpster, to any North American folks), but it was there when I pulled a couple of monitors out 2 or 3 weeks ago (I'd taken too many as it was at the time!), so it's been out in the weather all that time, and it rains a lot here, and it snowed last night. But lo and behold, then I took it home today, it powered up fine (probably not the smartest idea given I knew it was wet), and is displaying a super video signal. Buttons all work, but the touch screen part isn't currently working; may be why it was dumped, or maybe because it got wet.

Anyhow, want to get it open and dried thoroughly, and see if I can get the touchscreen working (the USB part of it is being detected by the PC, and drivers installed ok, so I'm hoping it's just because it's wet; it's a nice monitor).

[Th3_uN1Qu3]

Re: Elo TouchSystems ET1915L - how to open?

I want dumpsters like yours in my country.

[tmcw]

Re: Elo TouchSystems ET1915L - how to open?

Ok, I got it open (bezel was very tight to the back cover, but I managed to break only one small clip).

I dried off any bit of water that I could see, and left the whole monitor broken down in a warm place overnight and most of the day. I reassembled the whole monitor, and it still works, and the USB connection to the touchscreen is working perfectly after a calibration.

The only problem is that there are still some blotches under the LCD screen, and there are a few horizontal lines on the screen. There are 2 very noticeable ones in the lower third, and a few smaller ones in the upper third of the screen.

Any tricks or tips on how to get the screen fully dried out? I wouldn't relish the job of trying to dismantle the screen.

Also, are the horizontal lines something that might disappear when it's dried out fully, or caused by some other problem?

[meanderer]

Re: Elo TouchSystems ET1915L - how to open?

you may have to take apart the screen to dry it up further.

[romansroad]

Re: Elo TouchSystems ET1915L - how to open?

You'll have to take it apart, as the moiture will take forever to dry in between those multiple sheets....and will also distort your image later anyway. If you've not done this yet, take notes on the various pieces and mark the far corner with a Sharpie pen...just a dot...so you can putit all back together. I use sticky post it notes too in order to keep it all straight. Oh yeah, if you have pets, the hair will cause you no end of grief. Other than that, its a piece of cake! Say, where are you anyway with these great dumpsters?

[romansroad]

Re: Elo TouchSystems ET1915L - how to open?

I'm sorry, just noticed you said touch screen....I've not done one of these yet, but the new Fujitsu I bought has both resistive (old) and capacitance (new) detection. I would love to hear from one of the others on taking apart a touch screen. This may add a whole new level to the misery that is screen work!

[tmcw]

Re: Elo TouchSystems ET1915L - how to open?

The whole thing is fairly easy to take apart once the bezel is off. Not sure what type of technology it uses; when I've looked for info, the same product code gives options then for the different technologies. I don't think it's resistive though, as there is only the one touch "layer" the outer glass.

The front glass is screwed into the bezel using 4 brackets, and a single ribbon (about 5mm wide) goes into the cage housing and plugs into it's board. The ribbon extends along the top and one side only of the screen. The outer front glass is then kept away from the screen (with padding the whole way around), I don't think it touches the screen when you press it, it's quite hard, no give in it.

Inside there are 3 boards, I presume power, video and for the touchscreen. Everything is well put together, has a greater "quality" feel than other LCDs like the E173FPs I'd have dismantled before, but I suppose at the cost they command, you'd expect that.

Have a dog, so know what you mean about the hair. When I put it back together, I was relieved to see that I'd have to take it apart again as a few stray hairs got in, even though I thought I was meticulous about it.

I can put the screen into an incubator at work, see if that helps with removing the blotches, but from what I've researched so far, there may be residue/tide marks remaining after that, so may have to get in there after all, and clean it down with pure water. Should be worth it though.

BTW, I'm in Ireland, and finding these relatively good monitors in dumpsters may explain in part why this country is going down the tubes. But that's discussion for a different forum.

[romansroad]

Re: Elo TouchSystems ET1915L - how to open?

BTW, I'm in Ireland, and finding these relatively good monitors in dumpsters may explain in part why this country is going down the tubes. But that's discussion for a different forum.

Too funny! As a kindred Celt (Scotland...generations ago....family likely kicked out for some reason!) I've never seen an ounce of quit in any Irishman!
Your beautiful island will bounce back!

[smason]

Re: Elo TouchSystems ET1915L - how to open?

I have 2 Golden Retrievers and a long-haired cat. I wouldn't even DREAM about taking a panel apart here. Maybe at work, but even then hair from my clothes would get inside it.

[Th3_uN1Qu3]

Re: Elo TouchSystems ET1915L - how to open?

I have a cat but that's not my problem. I live in Bucharest (dust, dust and more dust!). I said i'll never take a screen apart again at home. Only in an auto paint shop maybe.

[TrippKJ4BKD]

Re: Elo TouchSystems ET1915L - how to open?

I have a few of the ELO touch screens to repair model ET1915L. have managed to open a few and have come to the conclusion that the inverter board is bad on some. But are haveing a hard time locating the board. I also found one with bad transformers just before the plugins for the ccfl lamps. Could not locate a suitabel replacement for the transformers. The inverter boards are Sampo by make and are arranged with duplicate circuits on both sides. I have my 12 volts and 5 volts comeing in from the smps but the transformers do not seam to be oscillating. Also there is a section at the top edge of the power supply that reads "5 volt touch"silk screened onto the board. On all of the 5 or so Elo displays that I am trying to repair show no voltage at this part of the board. I am assuming that the 5 volts would be supplied from the USB from the PC that the display is attached to in order to interact with the touch screen and have it talk to the pc.

[TrippKJ4BKD]

Re: Elo TouchSystems ET1915L - how to open?

I will posts some pics of the SMPS and inverter boards as soon as I can. I know that pictures are helpfull in this forum.

[retiredcaps]

Re: Elo TouchSystems ET1915L - how to open?

I will posts some pics of the SMPS and inverter boards as soon as I can. I know that pictures are helpfull in this forum.

You read our collective minds. Please follow the picture posting guideline as outlined in misc suggest #1 at

https://www.badcaps.net/forum/showpo...1&postcount=14

[TrippKJ4BKD]

Re: Elo TouchSystems ET1915L - how to open?

Thanks so much Retiredcaps for posting the link to (2 second to black) I will definately use theese guidlines as I attempt to repair the displays. I do have the Blue Ring meter and if I am using it correctly I feel that the transformers are indeed bad. I am not a professional service repair tech. I do not have a business repairing electronics. I am just a hobbyst learning as I go. With my learning curve it takes many many hours of repetitive do over and over again tasks untill concepts and understanding starts to take shape. But recently with this Forum and other sources my knowledge has grown alot. I have just in the past 2 weeks taken on about 10 touch screen monitors and about 10 regular run of the mill LCD diplays. I will have my hands full for sure. I have in those 2 weeks repaired only 3 out of the 20 and as soon as some more caps arrive I think I can fix about 5 more. But the ones that have the bad inverter boards and transformers are going to take a while longer. Lets see I'm 45 now and If I live to be 85 maybe I'll finish.

[retiredcaps]

Re: Elo TouchSystems ET1915L - how to open?

With my learning curve it takes many many hours of repetitive do over and over again tasks untill concepts and understanding starts to take shape.

I'm in the same boat. I remember certain "ooohh, that's how it works" moments in this 7 month journey. I remember the first time measuring the main voltage cap and seeing 165V DC and then all of a sudden, a lot of things made sense.

Hint. If time permits, start reading/bookmarking all the posts by PlainBill wrt to troubleshooting. Particularly the ones where he goes into great lengths to explain how something works. You may not understand it now, but very soon, you will catch on.

Great start on the 20 monitors. Some will not be economically (time & money) feasible to fix, but if you want to learn and get pleasure out of this hobby, then it is worth it.

[TrippKJ4BKD]

Re: Elo TouchSystems ET1915L - how to open?

Amen to all that. I had repaired 4 Dell monitors that work was throwing away. Sold those to someone who had some friends that use tons of monitors in thier business. They had had theese lying around for sometime and asked if I wanted to take them on.
So. Here we go!!!

[tmcw]

Re: Elo TouchSystems ET1915L - how to open?

I didn't break down my monitor again yet, but can take photos of the process and post them if it would help others. I'm going to do it this afternoon, snowed in here, and looking for something to do.

Also, TrippKJ4BKD, since mine is working ok, if you need any help verifying voltages, etc, I'll do my best to help. You'll need to be fairly specific with what you want though, as I'm kinda new to this as well, not far beyond swapping out boards or changing the usual faulty caps to get something working again.

[TrippKJ4BKD]

Re: Elo TouchSystems ET1915L - how to open?

Hey thanks for the help offer tmcw if I come across something that im not sure of output voltages etc. I will ask and I will be specific as I can. I have yet to scrounge up the camera to take some shots. Maybe this week end. It's hard to do some of this stuff with work and all. Any way I wish I was snowed in and could concentrate more on this stuff. Take care and stay warm.

[BlkSmth]

Re: Elo TouchSystems ET1915L - how to open?

What sampo board do you have?

[aaronplant]

Re: Elo TouchSystems ET1915L - how to open?

Hi there,

I realise that some time has elapsed on this thread, but I am hoping someone will be able to let me know more about how to open the case of the Elotouch ET1915L monitor. These units seem impervious to gentle encouragement, and I need some clear advice on where to prise the case etc. before I break it.

Can anyone please help? I noticed tmcw posted earlier in this thread and I am hoping me may be able to post some photos / advice on case removal for this screen?

Many thanks,

Aaron.