Emax

Hi Alan,

It sounds like you've either got a dodgy connection (on the 2x7-pin
IDC pin connector for the LCD assembly), or you've moved the thin
rubber connector between the LCD glass and the PCB.

I have a dead LCD backlight and I've found a supplier who does a
replacement LCD:

http://www.crestcomponents.com.au/wh1602cyyhjtk-p-3.html

I've yet to receive mine, but it seems to be the same spec, so it
should be fine. As far as I'm aware any "1602C" spec LCD (with the 2x7
 pinouts on the left side of the PCB) will work.

Obviously, since I'm in Australia it's my closest supplier, but I'd
guess that any company that supplies LCDs would have the "1602C" type
in stock.

Crest components also do a good range of backlight colours, plus
they're pretty cheap. Even if the LCD doesn't work (unlikely), I can
just remove the backlight and use that.

Cheers,

Mike.

--- In emax@yahoogroups.com, "alancurrall" <alan@...> wrote:
>
> Uh oh!
> I tried the bits of cardboard wedged behind the LCD as suggested,
following the 
> instructions on the Emulatorarchive site. I even disconnected the
LCD module first to 
> ascertain that this was indeed the source of the whine. It was.
Unfortunately, however, all 
> that wedging various thicknesses of card behind the display to fix
the problem only seem 
> to have created another problem. Now the readout on the display is
gobbledygook. 
> Everything else is working okay but the display is simply
indecipherable. I wondered 
> whether the problem could be caused by the front part of the display
being lifter away 
> from the EL backlight?
> 
> If no one has any bright ideas for fixing this I'm just going to
have to fit a new module. 
> Anyone know a good source?
> Cheers,
> Alan
> 
> 
> --- In emax@yahoogroups.com, "Mike" <rolands50@> wrote:
> >
> > Hi Alan,
> > 
> > Sounds like (no pun intended!) the voltage inverter/drive for the LCD
> > backlight, or the EL backlight itself.
> > 
> > You'll have to take the machine apart to get to it, but thankfully
> > Emaxes are very easy to work on, since they're so simple inside.
> > 
> > If you're confident enough, you can try taking out the LCD display, to
> > confirm that it's the source of the noise. If it is, a trick you can
> > try is to wedge a small piece of carboard between the EL backlight and
> > the LCD display, which can sometime work to eliminate the whine -
> > which is actually a high-frequency vibration.
> > 
> > Cheers,
> > 
> > Mike.
> > 
> > --- In emax@yahoogroups.com, "alancurrall" <alan@> wrote:
> > >
> > > Hi Emax Boffins,
> > > Ever since a got my Emax it's produced a high pitch background noise
> > > while it's on. This doesn't come through the audio outputs, so
doesn't
> > > effect its performance, but comes from the machine itself. It's not
> > > very loud and sometimes I just mentally blank it out, but other
times
> > > it does get to me and is annoying.
> > > 
> > > Any one got any suggestions as to what it may be and how I might get
> > > rid of it? I've put in a new power supply since getting the
machine so
> > > I don't think it's got anything to do with that.
> > > 
> > > Thanks for any advice,
> > > Alan
> > >
> >
>