[sdiy] OT Roland W-30 displays

[Louis van Dompselaar]

I actually have a spare W30 display lying around


Op 28 feb. 2011 om 21:01 heeft <grant at musictechnologiesgroup.com> het volgende geschreven:

> I can't say for sure, but judging by the part # it's probably a pretty
> standard display (at least for the day). If someone can take a photo of
> the chip-side of the board we could probably second-source it.
> 
>> -------- Original Message --------
>> Subject: Re: [sdiy] OT Roland W-30 displays
>> From: Ullrich Peter <Peter.Ullrich at kapsch.net>
>> Date: Mon, February 28, 2011 6:21 am
>> To: Neil Johnson <neil.johnson97 at ntlworld.com>, Gordon JC Pearce
>> <gordonjcp at gjcp.net>
>> Cc: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
>> 
>> 
>> Hi!
>> 
>> The W30 Service manual says that it is a LM240142 LCD (PN RL-15029487 from ROLAND).
>> If you need I could give you the LCD module pinout out of the schematics.
>> But I found no datasheet for the display.
>> 
>> Replacement displays are available here but very expensive:
>> http://www.vintageplanet.nl/pages/roland.html look for "LM240142"
>> 
>> Ciao
>> Peter
>> 
>> 
>> -----Original Message-----
>> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Neil Johnson
>> Sent: Monday, February 28, 2011 2:30 PM
>> To: Gordon JC Pearce
>> Cc: synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] OT Roland W-30 displays
>> 
>> Gordon,
>> 
>>> I picked up a W-30 at the weekend, but its display was intermittently
>>> scrambled and got worse and worse as time went on.  It appears to have been
>>> replaced with a different display, with some fairly rough soldering.  I
>>> suspect something on the display PCB is knackered.
>>> 
>>> Can I just replace it with any 240x64 graphical LCD that uses the same
>>> controller, or is there something "magic" about it?
>> 
>> I don't believe there is anything special about the particular one in
>> the W-30.  As long as it has the exact same register API as the old
>> one then it stands a good chance of working.  Try it out and see what
>> happens!  At worst you'll get a blank display or garbled display.  Oh,
>> and the display driver in is EPROM, not on disk, so tricky to update.
>> 
>> Cheers,
>> Neil
>> -- 
>> http://www.njohnson.co.uk
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