Here you got some Info how to replace your LCD Display if the backlight gets dimm and dark.
You wont need to replace the old EL-Backlight foil anymore, if you take a modern display with LED Backlight.
The LCD Display Replacement instructions her works for Synthesizer KORG, Yamaha, Kurzweil, Kawai, Akai MPC.
The following models are tested:
Kurzweil K2000 Rack and KB Version
Kurzweil K2500 / K2600 may work too, not tested.
Yamaha SY99, SY77, TG 77
KORG Wavestation EX, AD, Wavestation Classic
KORG T Series
KORG i2,i3 01R/W and maybe the X-Models too
KAWAI K5000 all models
maybe K5 too
AKAI MPC 1000 and MPC 2500
In the linklist you will see what LCD types are needed.
It is recommend not to unsolder and re-use the old connector Kit, but to purchase new sets.
Here is a dealer on ebay with the perfect Connectors: JUST-HONEST
He will ship international, fast and very well packed.
Link to ebay shop: Link to the ebay-shop in new tab
The most interesting Parts are items 252147177192 and 262476223511
wich allow perfect clone of actual connection.
Here the basic instruction:
Note: (link to perfect Displays will follow)
Example pictore of LCD Screen with connection:
The LED Backlight is very long lasting and not much more expensive than simple EL-Foil replacement.
It needs 5 Volt DC Power for the LED-Backlight, which is common and hasslefree, some different displays need only 3,5 Volt and you have to add som resistors.
But here you can use e.g. 5Volts of Floppy Disk Power of your Synth and have no Problem with calculating resistors.
First Step: Please read all the information here and in the links on bottom, ist no bad idea to google for some newer info or videos
as linked here. Thean you will see what addition connectors and cable you will need for YOUR synth.
Please: avoid any electrical statics when touching the display
Disclaimer: Modding and soldering at your own risk, I can not be held responsible for any damage!
As you know: Unplug the device first – HIGH VOLTAGE inside!
Connection to synth:
Depending on time and soldering skills you may re-use your old connector cable from the old display,
but I recommend to purchase a new one. there are different types, with small head connectors or big ones you can plug in.
Which ones depends on how much space is behind the display, and as mentioned below on some models you need right angled connectors.
Please look carefully how your old connector cable is build.
See ordering example from ebay for IDC 20 Connectors and cables in the links( seller Just-Honest) below.
Attention!
When soldering IDC to Display on some synths you have to leave 21+22 pins open (see details in the links)!
21+22 are only anode and cathode (+/-) for the LED Backlight.
Some Synths , e.g. K5000 need to leave some pins in the middle unconnected. In that case you can easily
solder your custom socket with simple Pin Headers (from ebay , for example).
You also have on the other side of the display 2 soldering points named „A“ + „K“ to feed
the backlight with 5 Volt.
See example picture here: (above the new display, below the old)
http://www.tellun.com/wavestation/WS_old_and_new.jpg
WARNING!!!!!!
!!!!!!!DO NOT: DO NOT feed the LED backlight of the new display with the power for the EL-Light Foil of the old Display!!!!
This is high voltage(!), coming from a small transformator or „Inverter“ which converts low voltage (often 5Volts) to high power.
Its best to remove or deactivate this small transformator /inverter , but you can use the Voltage coming IN the transformator to feed the LED backlight of the new display
if this is 5 Volts DC.
Note: On some synths you can easy get + 5 Volts from the source that powers the Floppy Drive.
The transformator for the EL-Foil Power is now obsolete, and it often was the reason for that whining display noise.
The usual case you already have searched the internet for some replacement solution,
but here I will provide you with some links for information and How-to´s:
Links:
IDC20 connectors & Cables
Link to ebay shop: http://stores.ebay.de/justhonestelektronische/
The most interesting Parts are items 252147177192 and 262476223511
Need Connector with left-out pins?
Just search ebay for „IDC20 PCB“, or „Pin Header“ if you want to build your own socket.
Here some example:
http://www.ebay.de/sch/m.html?_odkw=&_ssn=just-honest&_armrs=1&_osacat=0&_from=R40&_trksid=p2046732.m570.l1313.TR12.TRC2.A0.H0.Xidc+20.TRS0&_nkw=idc+20&_sacat=0
http://www.ebay.de/itm/Stiftleisten-pinheader-2-54-mm-in-drei-Fraben-40pin-male-single-row-/322346322811?var=&hash=item4b0d568b7b:m:mCNz68JriMJGLgNm-4ppCNg
Connection on your Synth is from the side?
Look after this in ebay „20 way right angled header connector“.
Or just choose „abgewinkelt“ from JUST-HONEST
Some links for installation of the display- if one isnt working or you find newer, please mail me in the comments – Thank you!
Note: There are also many links on Google and vids on youtube which show only the replacemet of the EL-Foil,
but you will change the whole display, BUT: Here you may find some usefull hints how to open and re-assembling your device.
It´s never a bad idea to take photos when disassembling, also easyier when looking for similar parts (theconnectors) on ebay.
Kurzweil:
http://www.mpc-forums.com/viewtopic.php?f=41&t=180515
http://helium.deepgreen.ca/dave/K2000_Display/
Akai
http://www.mpc-forums.com/viewtopic.php?f=27&t=97249
You may need to reinstall your OS to format the new Display.
Please note: If screen is blank after installing new display, you may have to adjust the contrast of the screen. (Hold Shift and Move Jog wheel)
Kawai K5000
remove transistor Q2 on power board to disable EL-Foil Transformator
http://www.vintagesynth.com/forum/viewtopic.php?f=1&t=74894
Korg
http://www.tellun.com/wavestation/wavestation.html
http://jaryic.livejournal.com/11778.html
Yamaha
Please note: On some models the Display connector is coming from the side, so you will need to make a socket
with a 20 pin right angled pcb header connector, see pictures in the links or on ebay or google.
http://www.xfactory-librarians.co.uk/Downloads/Yamaha_TG77_Display_Upgrade.pdf
http://www.xfactory-librarians.co.uk/Downloads/Yamaha_SY77_Display_Upgrade.pdf
http://www.javaworks.de/page13/page57/page57.html
http://www.yamahaforums.co.uk/forum/viewtopic.php?t=5973
http://www.yamahaforums.co.uk/forum/viewtopic.php?t=4592&start=90
This one is especially for SY99, but most steps of the SY77 are identical, so you should read them too.
http://www.yamahaforums.co.uk/forum/viewtopic.php?t=4846