Checked everything, and still no sound!

[pear_b]

I brought the amp back to the shop, they put it on their wall and it works fine they say. I installed it and it turns on, but then shuts off immediately.

ive checked the wiring in the back of my HU, made sure all the wires didnt get cut, rca's check, but still no sound?

what I did was the ground wire touched my distribution block and sparked, so maybe my power wire and block is no good? how would I go about to check that.

thanks

[U.P. Bumpn]

Check your power wire fuse, than check to make sure you have a good ground for the amp

[pear_b]

the grounds good, how would I go about checking the power wire?

[U.P. Bumpn]

First off check the fuse up front by your battery. If that is good check your power wire with a test light by grounding it to the best ground which is your ground wire probably and than touching the other end to your power wire. Sorry if that didn't make much sense. If you grounded out your power wire theres a high chance you fried the fuse.

I meant ground the one test light lead, than touch the other lead to power wire