Korg Forums

sunriser111671 · Posted: Tue Jul 14, 2015 4:53 pm Post subject: Showing Off My Custom M1

So, I was tired of the somewhat ugly black-on-green display of my Korg M1 and decided to replace it with the ultra-cool white on blue display (seems to actually match the M1 case better!)

So here's me being a show-off and posting my cool new display:

The picture really doesn't do it justice. Maybe I'll figure out how to get my camera to get a better picture of it and post a better pic.

the_crimson_thunder · Posted: Tue Jul 14, 2015 6:49 pm Post subject:

Wow - looks good - cool mod Cool

What display have you ordered (and from where) ? Would be nice to know - my M1 still is waiting for a mod like this Very Happy

I've done that kind of 'Cool Blue' mod to my SY99 nearly two years ago:

http://www.yamahaforums.co.uk/forum/download/file.php?id=416&mode=view

sunriser111671 · Posted: Wed Jul 15, 2015 3:38 am Post subject:

the_crimson_thunder · Posted: Wed Jul 15, 2015 6:14 pm Post subject:

sunriser111671 · Posted: Wed Jul 29, 2015 12:22 am Post subject:

Well here's the short of it:

The new LED backlight connection is right next to the display interface soldered connection. I spliced into the cable on the KLM-1269 5VDC connector (CN9) and feed the wires to the LED backlight solder points (A & K). The existing connector on the original LCD lined up perfectly after that to power the chip and update digit display.

The big issue,however is the potentiometer for the contrast adjustment: It was using a 6-10VDC signal and the new LED LCD requires 3-5VDC. I therefore removed the resistors at the potentiometer(R11,12,13) to open the 6-10VDC circuit and soldered 5VDC +/- feed wires to each leg of the pot.

After that, my super-cool blue display worked like a champ!

jbeliz · Posted: Thu Jul 30, 2015 2:40 pm Post subject:

Awesome, thanks for sharing.
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the_crimson_thunder

Hi Guys,

here's the result of the 'Cool Blue' Display-Upgrade of my M1 & M1REX synths... Cool

sunriser111671 · Posted: Fri Nov 11, 2016 2:20 pm Post subject:

crimson,

Nice job! You were able to get better pictures than I!

Did you end up going with the crystalfontz display?

the_crimson_thunder · Posted: Fri Nov 11, 2016 4:55 pm Post subject:

Hi sunriser,
good to see you on the forum again... Very Happy

John01W · Posted: Fri Nov 11, 2016 9:49 pm Post subject:

Lookin' good man!

the_crimson_thunder · Posted: Sat Nov 12, 2016 7:05 pm Post subject:

I know...