Emax

The one thing I have learned about electronics is patients and attention to
details.
I hope i can help you out. I'm not a professional, I do these repairs as a
hobby in my spare time. Restoring my Emax is worth it, something about the
80's sound that comes from these i really love. What I did was the
following:
1) Remove all the original header pins from the old display
2) Remove the El Foil "Inverter" (small black box) from the CPU board
3) Install old header pins 1-14 into new Led display (On the new display
there will be two empty pins 15,16 that remain empty)
4) Install only header pin K, DO-NOT install header pin A
5) Remove surface mount resistor R7 and solder it in the R8 location (this
pulls 5v from another line)

Did you remove the "inverter" before you tried it for the first time?
If pin A was installed and the "inverter" was still in place you probably
fried the new lcd screen.
On my setup pin A is removed and resistor R7 is swapped with R8, this is the
only way it works.
If you don't Swap the resistor on the new Display, the LED gets too much
current and the Display runs hot (not good)
However with the resistor swap the new display is getting the correct
voltage and current.
Is your Emax the Keyboard version?

Whatever you do don't throw the Emax overboard! My GUESS is that you just
fried the new display.
Get another  Newhaven NHD-0216EZ-FL-YBW and try it again

Like Ted said, without a working display the Emax will not boot. I listen to
Ted his advice on all things Emax is always welcome.

Where are you located I'm in the SanFrancisco Bay Area?


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