Roland JV-2080 LED Display Upgrade.
White graphics on Black background. (Negative)
IMPORTANT !
Pls read the following information before ordering this NEW (Version 2) JD#JV#XV
(12oclock view) black display.
Rgds SJ.
This NEW (Version 2) 990#2080#5080 display is an updated design of my original JD#JV#XV replacement display.
It's important to understand. As of July 2023, the original (12oclock) display has been discontinued. Its design is now obsolete !
And that includes, the counterfeit versions recently for sale elsewhere, without my permission. They are cloned copies of my original design which included the temporary, and not particularly well thought out J1,J2,J3,J4,J5 circuits. (see listing pictures)
( My primary focus, at the time was getting the display working. That was the No1 objective )
This new (Version 2) has multiple NEW features, which completely optimise the operation of the display, and most importantly, allow it to bypass EXTERNAL faults, that normally render the display inoperable. These NEW features, replace the old. and now obsolete J1,J2,J3,J4,J5 circuits.
These updates are important because they allow the display to bypass the mainboard voltage issues which happen, sometimes, on some modules. It's now possible, without soldering, to reconfigure the backlight to bypass the mainboard faults that can happen.
NO soldering or modifications are required to do this. Everything is 'switchable' and completely Plug N Play !
So, if your 990#2080#5080 mainboard malfunctions, and the screen goes blank, you can simply set both backlight switches to INTERNAL operation. This will bypass the mainboard voltage fault that sometimes happens with these various Roland modules. The display will then operate as normal. This new Plug N Play "Repair Mode" is only possible on the (Version 2) display.
NOTE !
( I recommend setting the backlight switches to INTERNAL operation during installation. That way, you simply
"Future Proof" normal operation )
So, If your module, in future, springs the firmiliar mainboard voltage fault, you'll be completely unaware, because the display will have been set to INTERNAL operation during installation. Simple.
( IMPORTANT ! Both switches must be set to either INTERNAL or EXTERNAL. They always work in UNISON )
Unless, advised otherwise, for convenience.
All (Version 2) 990#2080#5080 (12oclock) view displays, will be built, tested and set to INTERNAL mode of operation before shipping. if you want to change it, so the backlight is powered from the mainboard (factory spec) you can either notify me, or change it yourself by simply moving the position of the switches.
(see listing pictures for various settings)
Listed below, is a complete detailed list of all the revisions I've carried out on the display to completely 'perfect' it !
1. Mounting holes have been shifted 0.5mm to the right. This small revision corrects the position of the graphics when the viewing window is fitted. Previous version, the alignment was out by a tiny amount.
It was hardly noticeable, but it's been optimised anyway. Version 2 now sits precisely centered.
2. The metal bezel has been revised closer to the graphics area. This means the backlight is now completely hidden behind. Previously, from certain acute angles, it was slightly visible. It's now completely hidden.
3. Contrast range switching. This is a very useful update to the display. Previously, an "average" setting for the contrast was calculated to work in all the modules, but this was never optimal. This new Version 2 design allows range switching. It's indicated on the display as contrast + and -
This allows optimisation of the contrast menu adjustment, on every module.
Instead of perfect contrast at menu setting 1-2 on a JD-990, the ideal setting is now (midway) menu setting 4-5. Much better.
This applies to all the JD / JV / XV modules.
To change the adjustment range, simply switch between + and -
Having the contrast, perfect at the midway setting on the menu is always optimal.
This is now possible on every Roland JD-990, JV-2080 and XV5080 module.
4. The display now has a built in thumbwheel backlight brightness potentiometer. It was tricky implementing this, due to the proximity of the electrode on the display and the lack of front panel space in all the modules. There is only one place to put it, where it's accessible. Top right hand corner of the display. There's just enough room, through the front panel, to get a finger tip on the thumbwheel to adjust after its bolted in.
NOTE !
The backlight brightness thumbwheel, must be adjusted / set up, before the front panel is installed. Otherwise. It won't be accessible. So, you must remember !
After bolting in the display and connecting the ribbon. Next procedure, is switch on. Set up contrast, then set up the backlight brightness. Once that's done, you can reassemble the front panel and lid consecutively.
Below, is the original listing text for the display, everything still applies.
Fundamentally, the display hasn't changed, I've just "perfected" the design. That's all.
Version 2 (12oclock) is easy to recognise. It's been produced in my signature white pcb !
Original listing text, as follows.
This NEW Negative White on Black LED display has a number of unique design features.
1. Custom Japanese FFSTN (Negative) Tri-Axis LCD panel for improved side to side (lateral) and 12o'clock racked view.
This White on Black graphic looks great sat in the black 2080 front panel. If you prefer the blue display, specify that when ordering. I will build and ship the blue one instead. Both displays are fantastic !
Colour choice will depend on personal preference.
2. Optimised display contrast to match various Roland modules.
In order to make the extensive tooling costs worthwhile, it was necessary to design this graphic display to work in other Roland modules which are slightly different in regards to contrast. An average voltage was calculated, the display was then designed to that spec. As a result, the JV can be optimised around menu settings 4-5. This is part of the design and necessary to ensure the display is compatible in other Rolands.
3. Oversized LED backlight.
Largest possible backlight footprint, keeping LED's away from the viewing area to avoid unwanted lightspot. The result is a flat, even background / border with minimal imperfections. With this black negative display, the backlight design was very important. If the border was patchy and uneven due to LED lightspot, it would ruin the look of the display.
4. Custom 5000K Pure White LED's.
The LED's used on this display are pure white 5000 Kelvin types. They were specifically requested. I wanted pure white light to maximise the display contrast. Combined with the backlight design, custom bezel dimensions and the highest quality 'FF' double film compensation / polarizers. The final result is a display that looks nearly like an OLED, nearly ! Its as close as it's possible to get with a Negative Black LCD. Its very difficult to get the black display 'right'. A significant number of revisions were required during design to achieve this aim. Marginal gains philosophy was applied to everything, the collective result is, indisputably, the best looking Negative Black LCD available.
5. Fully adjustable backlight dimmer.
This feature is absolutely necessary with this black display. Before it ships, the brightness will be set to the level 'i' think is correct for the black FFSTN glass. You can, ofcourse, adjust it further to either brighten (anticlockwise) or dim (clockwise) trick is, not to boost it too much. When its clearly readable @ arms length, it's bright enough. Remember, your using the display to edit a synth, not land planes @ heathrow.
There is a point, a sweetspot, where the graphics are not too bright and not too dim, the background is as black as possible and it looks amazing. Armed with the backlight dimmer. Its possible to dial in this sweetspot perfectly. It simply needs fine tuning with a small screwdriver. The dimmer is located top right hand corner, adjustment is via a small screwdriver. The display can be connected up, screwed in, then switched on and set up, from your normal, viewing position. Afterwards, the front panel and lid can be reassembled.
This special negative black display was designed in parallel with my NEW black Akai display. Both share very similar design characteristics. I used the same tricks on both to maximise the performance. Both have the same Tri-Axis glass produced in Japan, designed to maximise the viewing angles. The blue display in comparison is relatively straightforward to design. For example, It doesn't matter how bright the backlight is on the blue display, with the black display, it's critical. A lot of time and effort has went into designing and manufacturing this special display. The pursuit of perfection, means the display is built by 2 different companies. One to produce the special Tri-Axis glass. The other, the chip on board and final assembly. The selling price is a reflection of that whole process and ultimately what you'll recieve in the post, the best looking, best performing, highest quality display for your JV. The display will arrive, ready to Plug N Play. NO soldering or modifications are required. Simply, connect the ribbon as before, bolt it in, then switch on and adjust the backlight dimmer.
**Some customers prefer the displays very bright, if that's your preference, you should choose the White on Blue. The background is a beautiful blue at every brightness setting**
**This display is specifically configured to upgrade your JV-2080. The viewing angle is set during manufacture @ 12o'clock view. Correct for a rack instrument. If you need a black display for your MC-80, XP-60 or XP-80, see my other listings. The displays listed there are 6o'clock view optimised for keyboard / desktop. The displays are NOT the same. Its important to fit the correct type, otherwise the look and functionality of the display will be badly compromised**
https://drive.google.com/folderview?id=1K6bogQeJlfBE4n4JgGZk5sklACKE690S
**this listing is for one (1) Plug N Play display only**
**If you buy a display, contact me for instructions when your ready to Install**
Under NO circumstances should this display be dismantled or disturbed in any way. There are NO user serviceable parts. The display is Plug N Play!
https://youtu.be/46CP7GKEwv8
JV-2080 JV 2080 JV2080