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633 - Reverting ATX power modifications

dillon68

New member
We ordered the 633 (blue LED - serial version) with the ATX power supply cabling and it was delivered with the mods completed for it to operate in that mode.

We'd like to revert it to the "normal" serial 633 configuration, but seem to be missing a step (the backlight doesn't come on when power is supplied).

What are the exact steps required?
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