Emax

Hi Alan,

Strange... Everything on my button board (including all the LEDs) are fitted
to 'pop-in/out' connectors, which I guess makes things easier!

Pity you are so far away from me, as I'd help you out (I'm in Melbourne,
Australia!). The button board wouldn't be a dead-loss, since it's only a
single-layer board, so any damaged tracks could be patched up pretty easily.

As for the PSU, I think (someone correct me if I'm wrong) it produces fairly
standard voltages and I've even heard of PC power supplies being hacked
about and used instead...

If I had the schematics (does anyone have the PDFs?) I'd be able to comment
a bit more on the PSU...

Cheers,

Mike.

On 12/02/2008, Alan Currall <alan@...> wrote:
>
>   Mike, Yeah it was soldered, and quite a fiddly bit for a novice like
> me to tackle. My Emax's life now rests on finding someone skillful
> enough to make good my handy work. As I couldn't even find anyone to
> to replace to power supply recently, I fear the worst. Anybody out
> there got a dead Emax I (rack) with a good button board?
>
> Cheers,
> Alan
>
> On 12 Feb 2008, at 3:52AM, Mike wrote:
>
> > Hi Alan,
> >
> > Just curious: why are you soldering on the button-board?
> >
> > On my Emax, the LCD assembly comes out (the 14 pin header simply plugs
> > into the connector on the button-board)
> >
> > Is it soldered in-place on yours?
> >
> > cheers,
> >
> > Mike.
> >
> > --- In emax@yahoogroups.com <emax%40yahoogroups.com>, Alan Currall
> <alan@...> wrote:
> > >
> > > Oh shit!
> > >
> > > My soldering skills are even less developed than I had feared...
> > >
> > > I've made a right hash of the back of the button board that hosts
> > the
> > > LCD module. Patches of scorched board and smears of useless solder
> > > now litter the area where the 14 pins come through. I'm worried that
> > > I may even have breached the integrity of on or two of the tracks.
> > >
> > > I guess this is what comes of impatiently trying to do a job
> > > inadequately equipped. Just out of (probably purely academic by now)
> > > interest what size soldering iron tip should I have attempted this
> > > butchery with? Also are there any recognised techniques for cleaning
> > > up a mess looking piece of board? With any luck it may just look
> > > worse than it actually is.
> > >
> > > Forlornly,
> > > Alan
> > >
> > > On 10 Feb 2008, at 10:00PM, mr julian wrote:
> > >
> > > > from the OP's datasheet, pins 15 and 16 are for an LED
> > backlight......
> > > >
> > > > so, yeah.. it's an LED backlight. No need for the backlight
> > inverter
> > > > module anymore. pull it out, too!
> > > >
> > > > Just wire 5V through a resistor (start with 6R8, assuming the LED
> > > > load/current requirements are right in the datasheet) 1/2W
> > resistor
> > > > from
> > > > to the "A" connection of the backlight, and wire the "K"
> > connection to
> > > > ground.
> > > > The Emax shouldn't worry about another 120mA, on 5V, I imagine....
> > > > (not
> > > > that I've ever tried, though!)
> > > >
> > > > The LED backlight power is a pretty simple thing - has anyone
> > checked
> > > > the data/control pins are in the right order on the old and the
> > new
> > > > module??
> > > >
> > > > ted Summers wrote:
> > > >
> > > > >Alan-
> > > > >
> > > > >The LCD must be soldered. I don't know if the system checks
> > whether
> > > > >the LCD is displaying or not.
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>  
>


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