08 super air tower speakers

[Mrang234]

My tower speakers won’t work & no power at all, tried new amp still nothing. Red breakers seem normal position
many ideas??

[MLA]

Get a basic digital volt meter and check for voltage across the amp ground and B+ and again at the amp ground and small turn-on terminal.

Ohm the speaker leads.

try an RCA x 3.5 cable direct to the amp with an media source.