E-mu Emulator Sampler User Forum for the EIII EII EI and EIII XP

Has anyone tried one of these? Any issues with the install?

http://www.ebay.com/itm/Emu-E-mu-SP-1200-SP1200-Emulator-II-2-Vintage-Sampler-OEM-REPLACEMENT-DISPLAY-/121335622799?&_trksid=p2056016.m2518.l4276

Thanks!

No, don't do that!

I don't understand why people always fall for those offers. Those prices are total rip-off, as these displays are standart displays. Any 16x2 3€ will work!

What M. says. Those prices are ripp offs. The new displays are pin compatible with the old ones so most 16x2 displays will work. You just need to pull 5V from somewhere on the mainboard for the backlight. Also you can get rid off the inverter!

Thanks for the replies!

Any suggested modules you all can recommend?

I just finished outfitting mine with a NHD-0216BZ-YBW from Newhaven Display. ($10us direct www.newhavendisplay.com). I also got a 1x16 IDC Interface Cable ($5.5us) because I'm lazy. I put header pins on both the display and the eii's board so this is removable. I pulled the +5v and ground from where the inverter was. The only weird thing I had to do was to swap the hex inverter IC in C25 with an LS because some of the character's were wonky.  oh, I also had to add larger spacers as the display sits higher from the board and also switched to #3 hardware (screws) since the OEM felt too snug.

Pictures or it didn't happen ;D

i've been holding out because the thing isn't complete yet… wanted it to be a surprise and all…
here

oops

and

and IC25

Did that yesterday and used the cheapest display from ebay (blue with white characters). Thanks for the tip with the hex inverter i had to change that too. Also inserted a 10k trimpot on line 3 for the contrast (thanks to Roginator). Works perfect now :)

Next thing is to get rid of the noisy miniscribe HDD.

Hi can you please explain what a ls chip is and where you acquired one?

i have a emax oled install and the characters are all messed up shortly after the welcome screen.

Lunatic suggested i swap the inverter with a ls chip.

also is the picture i attached accurate?

is the chip on the front display board the hex inverter?

sorry for the way delayed response. The chip I swapped in is the 74LS04N. I have a few dozen random logic chips around from my college EE days so i'm not sure where you'd pick one up. however i bet they're common enough. Can't advise you about the emax unfortunately.

Hy, i've got a strange anomalie with my LCD and inverter. That began to pull my mind over.
Messages boot in progress , insert disk, this Will take à Will are good. But when i start to use the EII characters start to be mad mad.
I've tried Motorola and Texas inverter 74ls04N and Hd74ls04n(witch never works).
Do you already have an issue? :'(

Ok, so I have found the part numbers. I had some gibberish on my display at first too. Actually though changing the hex inverter to the Texas Instruments type you have installed did the trick. The one that was installed in my EII before was also a TI one, this: CD74HCT04E.

Thanks,

I have order another parts from eBay.

It very strange that the inverter Works only when i switch on thé EII, after boot and load bank it begins to show bad letters

Did you ever find a correct inverter that works?

No !

I have check on sp 12 Turbo witch one it is cause the new lcd backlight works fine .

I can find a M74LS14P on it.

I will order one soon....

Yet again...  I think my mod for new displays may fix a lot of these issues.....

This is actually a common issue which I've reported a fix I came up with before but perhaps not on this site.

The LCD timing on the EII is marginal and although it just about works with older HD44780 compliant LCD modules, many of the modern equivalents have faster timings. 

This often manifests itself by showing nothing, a solid bar or garbled characters on the bottom line of the display.  The top line is always fine with a new display fitted.

The fix I came up with several years ago has helped a number of other owners to make their new displays work so this is definitely worth a try....

FIX: Solder 4.7NF metal film capacitor between pin 1 (Ground) and pin 6 (Module Enable) on the LCD module header.

This works by slightly lengthening the Enable pulse to the display.

Great  ;D .

I will try.