12-button navigator; no display

[87glhs]

Hello-

I have a 12-button navigator from an '88 Pacifica that has no display. I have +12v on the "batt", "ign" and "illum" wires, and the three grounds connected.

When I connect the chassis ground I get a slight beep from the unit, but no lights, and it doesn't beep when I press the buttons.

Anyone do any, of know of anyone, that does component level repairs on these units? Anyone have a schematic for the unit? I hate to scrap it if it's a simple fix--

[1983Rampage]

Claroo has fixed quite a few of those things, I got the switches for it from him and he may have an idea of what needs to be done.

[87glhs]

Already PM'd him, he doesn't do component-level on these other than the switches.

Would like to know who made it for Dodge and who has schematics--happened to be lucky enough to find one in a JY and it's bad.