Bird won't fire! Is my 788 dead?

[JDawg Senior]

OK...maybe an amateur question but I'll ask anyway.

I've got an old 788 on the bow. It will no longer turn ON....at all. No sign of life. I've checked bow fuses, etc. Everything appear to be fine.
What's the best way to test if its' the boat/electrical or the unit?

[Wayne P.]

Remove the display from the mount. Use a Volt/OHM meter with the probes on the two power cord pins to see if you have any voltage on the circuit.

If you don't have any voltage, fix your circuit.

If they do and it's at least 12V, before you put the display back on the mount, VERY GENTLY and VERY LITTLE, adjust the two power cord pins in any direction. The pins still have to line up with the tiny holes in the unit receptacle LOOK at them. Use a pencil point to make the adjustment. Put the display back on the mount and test.