Amplifiers won't power on after replacing battery?

[idkcaraudio]

Hi,

I recently replaced the battery in my mother's car and when I turned it on, everything worked fine except for the stereo. It's an aftermarket stereo; the headunit powered on but both the amps remained powered off. I didn't do the stereo installation myself, my parents got a shop to do it for them a few years ago so I'm not entirely sure how it's all wired up. Is there anything I should check? I'm confused as to why this would happen. Btw not sure that it matters but the headunit is stock.

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[nauc 10+ year member]

check the amp fuses

 

[idkcaraudio]

Thanks, it was my own stupidity. xD Forgot to reconnect the 12v line for the amps to the battery.