My power acoustik lt620-2 protect light stays on whats the problem?

do you have it wired in with all necessary wires? i.e.: audio jacks L/R plugged in?

Most likely a transistor has blown in the amp. If you would like me to repair it for you, contact me at [email protected]

check the signal cable, there could be interference that causes a high peak that keeps the protection light on because of constant high output

Are you fused close to the battery with a 30-50 amp fuse block?
Ground unit also to most closest suitable location!
Is your power wire undersized?
Check units fuses you may have blown one hooking it up!!
Good luck

One thing to check is to be sure you have a good ground that can sometimes cause similar problems.

its going into protect mode, meaning there is either a short in one of the transistors
or one of the jumper bars is loose, needs to be re-sodered. Easy fix.

Unplug all the speaker wires and try it again, if the amplifier turn on
yo have a bad speaker, if the ampliier still in protection mode, check all the fuses in the amplifier and near the battery,
if they are ok you have a bad amplifier
good luck

its dead the chip inside is fried

have you wired it up properly + to + and - to - and the power + and -

i had one of these amps, if you don't have a good ground, the protection light will come on.