Emax

Pin A and K are the anode and cathode of the backlight.
The original EL backlight on Emax is not +5V.
To use an LED backlight, you break the connection of the A pin on the
display board and then connect the pad going into the display to +5V with a
resistor in line to reduce the brightness (if my understanding is correct).
The pot people talked about is added between a couple pins to change
reflective angle in the event you can't see the letters or they are barely
visible.

Hopefully that makes some sense.

Regards,
Ted




On Tue, Mar 29, 2011 at 8:37 AM, mlivingston8 <mlivingston8@...>wrote:

>
>
> Call me stupid but I still don't get this procedure. One person says add a
> resistor, the other says there is no need to. Nothing is working for me
> still. Jason, did you not have to add pin A? I took the pin A I had
> originally soldered in out again but now the Emax will not turn on at all.
> Maybe I burnt out that surfacemount resistor? At least with pin A in there I
> got power to everything. I'm about to throw this thing off a bridge.
>
> --- In emax@yahoogroups.com, Jason Mc <jasonmcdougal@...> wrote:
> >
> > Hello All,
> > Have a look at http://groups.yahoo.com/group/emax/photos/album I just
> posted
> > pictures of the steps I took replacing my Emax Display.
> > I hope this helps!
> >
> > On Sun, Mar 27, 2011 at 1:24 PM, mlivingston8 <mlivingston8@...>wrote:
> >
> > >
> > >
> > > Yeah, I soldered in the resistor to the other jumper on the board. Pin
> A I
> > > thought was implied because just moving that resistor still doesn't
> hook it
> > > up to anything. The pin still has to be soldered to the board to get
> power,
> > > just by looking at the traces on the board and following it to the emax
> > > board, that was my conclusion. The steps were a but confusing which is
> why
> > > I'm in this predicament as of now.
> > >
> > > Ted, thanks for offering your help. Just to clarify, what boards do I
> need
> > > to send you? The emax LED board and the replacement newhaven LED
> screen? Or
> > > do you need my emax digital board as well? I'll email you to talk
> > > compensation for your services. I hope I haven't FUBAR'd this emax
> because
> > > it's the last revision digital board with scsi already installed, so it
> is
> > > worth the trouble. I even fitted it with internal to external connector
> and
> > > have my zip drive ready to roll. Just no display :(
> > >
> > >
> > > --- In emax@yahoogroups.com, "dutchbeats" <dutchbeats@> wrote:
> > > >
> > > > he said to solder 1 - 14 and pin k which is the led ground. don't
> solder
> > > the led + because you already are getting power for the screen by
> switching
> > > the resister on the led board from r7 to r8. please tell me you
> soldered the
> > > led + and jason is right :/
>
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --- In emax@yahoogroups.com, "mlivingston8" <mlivingston8@> wrote:
> > > > >
> > > > > I've replaced the header pins 1-14 to the new display but I'm
> confused
> > > on where to solder the A and K pins on the new display. I see the
> ground and
> > > +5 on the Emax LED board but the spacing on the new display seems a bit
> > > wider than the original. Do I have to solder the pins on the new
> display and
> > > bend them to fit the Emax board?
> > > > >
> > > > > --- In emax@yahoogroups.com, "jammie" <jammie.emma@> wrote:
> > > > > >
> > > > > > on the rack you would still need the pot as the angle on the rack
> is
> > > a negitive veiw angle voltage
> > > > > > ----- Original Message -----
> > > > > > From: Jason Mc
> > > > > > To: emax@...m
> > > > > > Sent: Wednesday, March 16, 2011 12:05 AM
> > > > > > Subject: [emax] Re: LCD replacement from RS
> > > > > >
> > > > > >
> > > > > >
> > > > > > Sorry about the last post gave the wrong part number, this is
> exact
> > > part I used.
> > > > > >
> > > > > > I have recently replaced my el foil display with this one:
> > > > > >
> > > > > > Mouser Part #: 763-NHD-0216EZ-FLYBW
> > > > > > Manufacturer Part #: NHD-0216EZ-FL-YBW
> > > > > > Manufacturer: Newhaven Display
> > > > > > Description:LCD Character Display Modules STN- Y/G Transfl 85.0 x
> > > 36.0t
> > > > > >
> > > > > >
> > >
> http://www.mouser.com/ProductDetail/Newhaven-Display/NHD-0216EZ-FL-YBW/?qs=sGAEpiMZZMt7dcPGmvnkBq9RSAvEJGmRKdDSboNhMSQ%3d
> > > > > >
> > > > > > $11.35 US
> > > > > >
> > > > > > 1) De-soldered the old header pins from the original display,
> > > soldered
> > > > > > them into new display.
> > > > > > 2) Removed the old EL-Foil Driver (black box)
> > > > > > 3) Used router and file on case to accommodate new display
> thickness
> > > > > > 4) De-solder surface mount resistor R7, Solder resistor in R8
> > > > > > location. This supply's the +5v for LED Backlight
> > > > > > 5) Header pins 1-14 need to be in place along with pin K (LED
> ground)
> > > > > >
> > > > > > Nice new low power LED BackLight display, great contrast no need
> for
> > > > > > added potentiometer.
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > ----------------------------------------------------------
> > > > > >
> > > > > >
> > > > > >
> > > > > > No virus found in this incoming message.
> > > > > > Checked by AVG - www.avg.com
> > > > > > Version: 8.5.449 / Virus Database: 271.1.1/3508 - Release Date:
> > > 03/15/11 07:34:00
> > > > > >
> > > > > >
> > > > > > [Non-text portions of this message have been removed]
> > > > > >
> > > > >
> > > >
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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