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X-50 display light flickering

 
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Phabius
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Joined: 28 May 2011
Posts: 193
Location: Sao Paulo, Brazil

PostPosted: Sun Mar 25, 2012 7:25 pm    Post subject: X-50 display light flickering Reply with quote

I have a X-50 for about five months now, received it new from Korg as endorsement along with a Kronos 61.
Both have not meet the stage yet, used only in the studio, but about to hit the road soon.

Today I've noticed an annoying flickering of the LCD, it seems to be the backlight, not the display itself. It goes from dim to bright quickly. Happens from time to time, not constantly.
As the keyboard is brand new, I would like to know if anyone had this problem so soon.

Thanks!
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Dandy Dust



Joined: 18 Oct 2011
Posts: 3

PostPosted: Thu Sep 20, 2012 6:49 am    Post subject: Reply with quote

I have the same problem. Any solutions? Surprised
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Dandy Dust



Joined: 18 Oct 2011
Posts: 3

PostPosted: Sat Jan 05, 2013 4:30 pm    Post subject: Reply with quote

Same problem here? Solution - spareparts?
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owex



Joined: 06 Aug 2012
Posts: 49
Location: Poland

PostPosted: Thu Jan 10, 2013 8:56 pm    Post subject: Reply with quote

In every X50 there's power input "broken". Sometimes, when cable isn't insterted well, I mean it is moving (yeah, that happens in every x50) lcd flashes and when you move korg while playing, it can be even turned off. No solution- just try to input cable more stable.

Hope you understood and that so did I Razz
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aderano0720



Joined: 18 Mar 2016
Posts: 10

PostPosted: Tue Mar 29, 2016 2:49 am    Post subject: Reply with quote

i guess its korg x50s major problem.. weak LCD...


I use my x50 for almost 6 months,
sometimes Im getting the same problem... unreadble.. sometimes no display at all (but generating sound)

and sometimes, it works fine again.... I dont understand...

I already tried openning the keyboard and refreshed the LCD (by just touching, detaching and attaching it again)
-- note that everytime Im doin this, it will work fine again......


I guess the problem is a cause of carrying problem..when you take it to a gig, maybe the vibrations are causing this....
- to prove that this is wrong, I hope some user will comment that they are also having problem at home, without carrying it to other place....
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j.blackstone



Joined: 26 Nov 2017
Posts: 4

PostPosted: Sun Nov 26, 2017 11:01 pm    Post subject: Fixed mine. Needed new LEDs. Reply with quote

My X-50 backlight started flickering last month. It became slower and more intense over a period of 10 days or so.

I opened the synth up, thinking that I would be replacing the 5V regulator on the PS board. But it turned out that the LEDs themselves were faulty. Not wanting to wait for my next parts order, I replaced them with a couple of white LEDs from a cheap flashlight. Worked great.

The two LEDs are through-hole parts (not surface mount). This photo shows one replacement LED in the foreground and one original one still installed behind.


The flashlight LEDs were more than bright enough, and I was a little concerned they might be drawing too much, so as a precaution I added an additional current limiting resistor. Probably wasn't necessary. (I put the resistor on the wire feeding 5V to the backlight board, as the LEDs are the only consumers of 5V on that board.)
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