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taki · Junior Member Joined: 16 Apr 2008 Posts: 65

I was just practicing yesterday night, and as I was trying to edit a sound, the screen was not responding in Program mode. I then switched it to Combi mode, and it work for a little bit.

Then I turned the unit off and then back on, and things degredaded...

Now, I tried going into the Calibrate portion of the M3 via touch, but the touch screen did not allow it...

So, I am taking it in to get the screen replaced..

My questions are:
1) Can I order the touch screen online? If yes, where?
2) How much does it cost?
3) Can I do it myself, or should I take it in?
4) Is there some other type of manual reset of the M3, withough using the touchscreen?

Thanks allot...

Taki

Hanon_CTS · Full Member Joined: 14 Jun 2011 Posts: 249

Cesarsound · Joined: 24 Jun 2008 Posts: 37

dumeril7 · Posted: Fri Jun 17, 2011 9:19 pm Post subject:

Seems like calibration isn't going to work since it sounds like the screen is losing all responsiveness (not just responding in a different place than where it was touched).

From what I've seen of the photos of the inside of the M3 module, getting to the display required removing a lot of different boards. It looks like a job that you probably want some electronics experience, or at least some DIY mechanical skills, to tackle.

I haven't any idea where one buys an M3 LCD, but I'm going to bet that its expensive. I've been surprised at how expensive the larger LCDs are for my other keyboards and those weren't even touchscreens.

In any case, an authorized repair facility should be able to order a new LCD.

D7
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J.Q · Junior Member Joined: 13 Mar 2010 Posts: 57

Before replacing the (expensive?) screen - try this: http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=40049

taki · Junior Member Joined: 16 Apr 2008 Posts: 65

Everyone.. Thanks very much for the great advice...

I just got a chance to check your responses out today...

After talking to my local musical repair shop (where they know me too well), they did state that this seems to be occuring to M3's that are less than 3 years old very frequently... where in my opinion is too often...

So, the issue is that the there is a screen on top of the LCD monitor, where on the lower side where it touches the LCD screen, has some chemical 'lotion' that allows for the touch to work - a resistive type of chemical that makes the connection between the two screens when you touch.

After this was explained to me, I took my module portion of the M3 in right away to get fixed, since I am using it to make a CD right now..

Good news is that you can buy the one screen with the lotion seperately. The tech told me in the past you had to buy both where it costs over $200, in the past... Since this is occuring more frequenctly with the one screen only, Korg is selling just one screen now..

Again, thanks for the advice, and will tell everyone how much it costs after it gets fixed this week.

Taki

taki · Junior Member Joined: 16 Apr 2008 Posts: 65

Got the M3 fixed...

Cost $150... $50 for the touch screen with the resistance stuff on it, not the LCD too... and $90 for labor... got a rush price on it, thus for it being a little more than normal for labor...

Hopefully, this does not happen to anyone..

Taki

dumeril7 · Posted: Wed Jun 22, 2011 4:30 pm Post subject:

Good to know. Thanks for following up and letting us know how it worked out what the cost was!

Best regards,
D7
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Randelph · Posted: Tue Jun 28, 2011 12:40 am Post subject:

Interesting...

When I had a Motif XS I had 3 keys that broke, as well as 1 of the sliders that didn't work all the way.

I bought the service manual for the board, $20?, and did all the work myself, which wasn't that hard. I was surprised at the slider- it was part of a circuit board that had 5 sliders on it, and I just unplugged the board and replaced it- done deal.

All of this was made easy by the fact that in the US the Yamaha service center had the manual and the parts and even techs that would answer questions.

As regards the M3 screen- is there any user behavior that accelerates the possibility of the kind of failure you experienced?

Randy
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taki · Junior Member Joined: 16 Apr 2008 Posts: 65

As for user usage...

I did allot of programming, thus touching the screen with my finger allot... Will start using a stylus, just in case dirt/oils/etc from my fingers affected the screen failing so soon...

I also left the unit on a couple days at a time, becuase I did not want to turn off the unit to force me to work on the unit, instead of watching TV....

Other than tha, I do not think I did anything different.... The unit was in a studio environmnet.

madbeatzyo111 · Guest Joined: 13 Jun 2011 Posts: 379

Did a little digging around. It appears that resistive touchscreens do indeed utilize a resistive coating in between the films that provides electrical connection when the films are pressed together. In 4-wire systems, the pressure sensitive films are on the topmost layer, where repeated pressing on the film by a stylus or finger, etc. is known to cause the resistive coating to become inhomogeneous or lumpy. So my advice is to try not to press too hard...also try to keep it out of direct sunlight since heat tends to soften these things up and cause them to flow more easily.

The reason why it did not cost an arm and leg is that they didn't have to replace the LCD, just the touchscreen film that is overlaid on top of it.

srs · Joined: 30 Jun 2011 Posts: 8

Are there screen protectors available for these touchscreens (just like they are selling for touchscreen phones) ?

I believe many of the phones use capacitive touch screen.

Using a stylus seems like a good suggestion even though it will make it less fun. Again , would any stylus work or is there anything special for these screens ?

srs

gte681p · Joined: 30 Jul 2011 Posts: 2

I just got a similar problem with my M3 touchscreen after trying to edit some tracks today. My keyboard is 2.5 years old. I keep my keyboard in my apartment so it's not in an extreme environment. I tried the "touch panel calibration" steps that were listed and I get no response from the unit.

When I'm using the screen in the other modes, it will only select some of the tabs and then cycle back and forth between them even if you aren't touching that particular part of the screen. For the majority of the screen, it won't select whatever you trying to select, i.e. on screen sliders/drop down menus.

I'll be taking the unit to the shop this week and will post the cost and any other information I get back from the guys there. I think my warranty is up so that doesn't help. I would be interested if more that just the one person had a problem with the touchscreen, especially M3 is starting to become an older keyboard

madbeatzyo111 · Guest Joined: 13 Jun 2011 Posts: 379

gurn is also encountering a problem with the touchscreen. See this thread: http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=63400

That makes 3 instances that I know of so far.

iixorbiusii · Full Member Joined: 30 Aug 2008 Posts: 198

Surely the LCD / Touchscreen unit isn't only manufactured for the M3? I doubt that Korg would have commissioned an LCD manufacturer to build something bespoke for them? This is bound to be a standard unit found in other devices / industries.

If someone is pulling their M3 apart to fix the screen, some photos of the unit would be useful, or part numbers so we can Google it and see where it can be sourced from, other than Korg repair centres...
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