you need to make sure you are getting 12v to the circuit board.
if you can pull the cluster out and still have it plugged in, then use a multimeter, you should have 12v to the limiter and 5v going from the limiter through the circuit board to your gauges.

if you can't test it in the car, then just test for 12v with the key on at the correct location on the plug that feeds yr cluster.

use a 12v battery and alligator clips with the cluster out of the car to test for voltage from the limiter. if you really want to get fancy, use resistors inline with a ground wire and see if your gauges work.