Odd Screen flashing, values cycling

thegoldenchild · Post by **thegoldenchild** » Wed May 11, 2016 8:46 pm

This keyboard is used at the church I attend. I play guitar in the worship and have been asked to help figure out what is going on with the Triton Pro X. I guess it had some weird heavy reverb problem a while back so they initialized the keyboard, losing all the factory sounds in the process.

They figured they could just load up a factory disk and be good to go; however, the keybaord itself is just acting completely bizarre. Almost like a key is shorted out. I tried updating the OS from 2.5.0 to 2.5.3 but holding Enter and Locate while turning on doesn't actually do anything. Here are some videos showing what is happening. Any advice would be greatly appreciated. I am comfortable tearing into it if need be.

http://s755.photobucket.com/user/golden ... x.mp4.html

http://vid755.photobucket.com/albums/xx ... jt3has.mp4

voip · Post by **voip** » Wed May 11, 2016 9:58 pm

It looks like the screen recognises when it's being pressed, but doesn't know where it's pressed. Doing a screen calibration may resolve the issue.

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thegoldenchild · Post by **thegoldenchild** » Wed May 11, 2016 10:02 pm

It's hard to see in the video but when pressing the drop down menu button on the screen, the menu flashes for a fraction of a second.

thegoldenchild · Post by **thegoldenchild** » Wed May 11, 2016 10:03 pm

It seems to recognize where I press, I was just trying to press the screen while looking through the camera

thegoldenchild · Post by **thegoldenchild** » Wed May 11, 2016 11:52 pm

http://www.korgforums.com/forum/phpBB2/ ... hp?t=80283

Wow, incredibly similar problem. I don't have the manual or the keyboard in front of me, is the "value slider" labeled as such?

thegoldenchild · Post by **thegoldenchild** » Thu May 12, 2016 1:52 pm

Cleaned the slider with electronic contact cleaner and compressed air, no change.

voip · Post by **voip** » Tue May 17, 2016 8:49 pm

Have you tried recalibrating the screen. It's a painless process, and should do no harm. Initialising the board will have lost the existing calibration data.

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ErnstDabest · Post by **ErnstDabest** » Tue May 17, 2016 10:34 pm

When i was a kid we use to put magnets on our TV set to make it change 'groovy' colors
needless to say it messed-up the tv.. so-as the saying go, once bitten twice shy - i would
always tell people never to leave their VCRs onto of their TV set 'cos it will messed the
picture......

For you youngins' reading this was before HDTV.

nowadays i tell people beware of heat sources : space heater (radiator) direct sunlight,
and dust. cover up your keyboard with a bedsheet or a tablecloth when it's not in use.

thegoldenchild · Post by **thegoldenchild** » Fri May 20, 2016 8:02 pm

I disassembled the unit and cleaned all the switches, pots, and sliders. That didn't help the problem but I was able to then upgrade to 2.5.3. I then reinitialized but no change. I ran a full test and the unit has two errors.

Midi Error Step 1
PCIF Error Step 1

Any thoughts on how to fix them?

What's interesting is the drop-down menu in the upper right works in the test screen but just flashes and disappears in regular mode.

Here's a pic of the errors.

http://i755.photobucket.com/albums/xx19 ... tubbrp.jpg

thegoldenchild · Post by **thegoldenchild** » Wed May 25, 2016 12:57 pm

I found a french forum that said the errors are normal if nothing is connected to the midi ports. So no lead from that.

I've read that running the full test resets the touch screen calibration, no change in behavior after running the test. I don't think I can recalibrate the screen once booted as I can't access the drop down menu in the upper right.

I've disconnected everything that wasn't necessary to boot the device and use the touch screen and it is still acting up. So, I'm leaning towards a mainboard problem. The big question will be, is it worth the $250-$300 for a used board.

Falcon2e · Post by **Falcon2e** » Wed May 25, 2016 1:28 pm

thegoldenchild wrote: The big question will be, is it worth the $250-$300 for a used board.

If you're in love with your Triton and you've got years of custom programing saved on it, it might be worth it. I have mine in retirement after purchasing a K2, it took weeks to rebuild my custom combis.

thegoldenchild · Post by **thegoldenchild** » Thu May 26, 2016 9:17 am

It's for church and they were just using factory sounds. They only paid $500ish for it a year or so ago. I bet someone would even buy it as is for parts.

thegoldenchild · Post by **thegoldenchild** » Fri Sep 02, 2016 4:54 pm

To possibly help someone else out. It ended up being the left board (KLM-2085). I replaced it with a new board and all the problems went away.