E-mu Emulator Sampler User Forum for the EIII EII EI and EIII XP - EII "Exact Replacement" display

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+  E-mu Emulator Sampler User Forum for the EIII EII EI and EIII XP
|-+  General Category
| |-+  EII Technical Issues / Tips
| | |-+  EII "Exact Replacement" display
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Author Topic: EII "Exact Replacement" display  (Read 4388 times)
This is not America
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Sp 12 turbo / Emu II /


« Reply #15 on: September 08, 2016, 06:21:18 AM »

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
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Sp 12 turbo / Emu II / Mac se30 / dx7/ mininova / Prophet 600/ you kou lay lay
80sboy
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« Reply #16 on: November 09, 2016, 08:47:39 PM »

Did you ever find a correct inverter that works?
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This is not America
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Sp 12 turbo / Emu II /


« Reply #17 on: November 13, 2016, 08:29:10 AM »

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....
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Sp 12 turbo / Emu II / Mac se30 / dx7/ mininova / Prophet 600/ you kou lay lay
HideawayStudio
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Hideaway Studio


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« Reply #18 on: May 24, 2017, 01:13:03 AM »

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.
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EII+, EIIIXP, EMAX II Turbo.  Electronic Design Engineer and Collector/Restorer of Vintage Music Gear
This is not America
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Sp 12 turbo / Emu II /


« Reply #19 on: May 31, 2017, 10:58:33 AM »

Great  Grin .

I will try.
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Sp 12 turbo / Emu II / Mac se30 / dx7/ mininova / Prophet 600/ you kou lay lay
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E-mu Emulator Sampler User Forum for the EIII EII EI and EIII XP - EII "Exact Replacement" display

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