i have a hifonics brz 2400.1 ive had it fro about 6 months and its done good but now when i turn it on the logo light comes on but the power light doesnt and the protect light isnt on either. i checked it with the multi meter and its getting 14 volts

 

Re-do your ground, go back clean it off and make sure it's good. My old hifonics would do that when the ground had gotten a little dirty.

 

thats what i thought it might of been but wasnt sure havent been able to check due to the weather though