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KN5000 WANTED LCD SCREEN

MY LCD SCREEN HAS DEVELOPED A MAJOR DISPLAY PROBLEM AND IS NOT DISPLAYING. I HAVE SEARCHED AROUND THE WORLD FOR A REPLACEMENT SCREEN AND HAVE NOT BEEN SUCCESSFUL.. CAN ANYONE PROVIDE ME WITH INFORMATION WHERE I CAN OBTAIN ONE.

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KN5000 WANTED LCD SCREEN

GEOFFD

GEOFFD
Australia

Total Posts: 3
Joined: September 16, 2017

MY LCD SCREEN HAS DEVELOPED A MAJOR DISPLAY PROBLEM AND IS NOT DISPLAYING. I HAVE SEARCHED AROUND THE WORLD FOR A REPLACEMENT SCREEN AND HAVE NOT BEEN SUCCESSFUL.. CAN ANYONE PROVIDE ME WITH INFORMATION WHERE I CAN OBTAIN ONE.

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Posted on September 16, 2017 at 4:28 AM
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7 Replies

davetutt

davetutt
United Kingdom

Total Posts: 166
Joined: January 12, 2015

Re: KN5000 WANTED LCD SCREEN

I would be very doubtful if you manage to find a replacement. Electronics moves so rapidly that once the initial production run of these displays has finished there are not going to be any new ones made. There are always a few put aside as spares but as you have discovered there are none around. Because of the age of these machines it is more than likely that you would have to buy another machine with a known good display and sell the rest as spare parts which given the price of keys and the like it would quickly recover your costs.

You didn't mention what the display was actually doing. And if the keyboard itself still works. A black display without backlight can be fixed. Even if it has to be modified with a LED solution. Displays that are only half working, lines or blocks missing or have unreadable text etc cannot be repaired (unless you have serious money to do it) and it is these that would require complete replacement.

Dave Tutt

Posted on September 20, 2017 at 7:18 PM

GEOFFD

GEOFFD
Australia

Total Posts: 3
Joined: September 16, 2017

Re: KN5000 WANTED LCD SCREEN

Thank you Dave. I am experiencing the problem of finding an LCD part around the world. I guess I will have to see what comes up with advertised keyboards.
I have tried to contact Mike Barden in the hope he may have one, but trying to reach him from Australia has been in vein. Thanks anyway for replying.
GEOFFD

Posted on September 25, 2017 at 8:26 AM

jd5live

jd5live
United Kingdom

Total Posts: 360
Joined: June 8, 2014

Re: KN5000 WANTED LCD SCREEN

Hi Geoffd, Just checked Ebay Germany, there is a display assembly for a KN5000 up for sale, don't know if they will do international shipment but worth contacting the seller.
Item No :- 272857015966
The price is 199 Euros
All the best John.

Posted on September 27, 2017 at 12:41 AM

GEOFFD

GEOFFD
Australia

Total Posts: 3
Joined: September 16, 2017

Re: KN5000 WANTED LCD SCREEN

Thank you John. Will make the enquiry.
Regards Geoffd

Posted on September 27, 2017 at 7:10 AM

sky5031

sky5031
United States

Total Posts: 3
Joined: November 4, 2015

Re: KN5000 WANTED LCD SCREEN

Okay guys I'm a electronic design engineer, a keyboardist and have gone through the same problems with the display crash,, bleedout, wasout loss on contrast ect, and even the service manual was little or no help. Iy turns out that technics used two companies for this display ,one made by Arida and the other was Matsushita, part numbers were Arida -edmmra8kaf which is a 6.2" display and matsushita 6.25" edmmra8kaf-g39 or qkwg030aa and are listed as being obsolete. However on ebay the seller named "YJLCDBUSINESS" does have a quanity of these displays and shipped for $90.00 dollars us.
Another problem was obsoleted stock of keys for kn5000-kn7000 series they are made by firm called "STBCD" molding they are also used on the korg m3-62, kronos61
hammonds organs xc .xc3, xb series organs so here are some sources, hope this is helpful, cheers Sky5031

Posted on August 11, 2018 at 12:08 AM

jd5live

jd5live
United Kingdom

Total Posts: 360
Joined: June 8, 2014

Re: KN5000 WANTED LCD SCREEN

Hi, Thanks for the details about the screens, for your reference Matsushita is the name of the parent company of Technics/Panasonic, however as you have shown these companies often out source parts from other manufacturing companies, the Disk drive units are from a large number of makers like Alps, NEC, and Sony to name but 3. In the passed Key designs as you point out have been shared with other brands like Korg,Hammond and others. Talking to our engineer one of the major Key makers is owned by part of the Akai group of companies they even produce for all types of plastic case moldings, you can never be sure where or what the bits inside you equipment come from or who made it.
Regards John
PS once again thanks for the info always useful

Posted on August 11, 2018 at 1:10 AM

davetutt

davetutt
United Kingdom

Total Posts: 166
Joined: January 12, 2015

Re: KN5000 WANTED LCD SCREEN

Since the LCD is likely to be good unless it is bleeding between characters the chances are that any LCD in these keyboards is liable to be a problem due to drive issues or back-light issues rather than the LCD itself. The back-light is of course a small cold cathode lamp pair bonded to the LCD itself and like all cold cathodes is far shorter in life than the LCD itself. In the dim and distant past I did a few small back-lit LCD's with LEDs but it is a painful process and difficult to do with many displays as you have to take them back to their most fundamental parts, not easy! And it risks breaking the display at which point the chances of a fix is slim!
back-light failure, when the display stays dark could be just the driver inverter so its worthwhile swapping out the bits on the inverter board first before the display itself. If I remember its got 480 volts switch on spike and some 250 once the cold cathodes have struck.
I used to replace the lamps on some TV's when in their wisdom they made the lamps slide in on thin metal grooves until they realised that the lamp replacements were doing them out of new sales!

Dave

Posted on August 11, 2018 at 7:42 PM