Radio does not work if I push the power button it says. Off

reversing cables blows out electronics.
only hope is fuse blow.
beyond that expensive repair.
learn use jumper cables properly or go broke fast.

Depends on the radio.
General idea is this:
turn radio power off on face of radio. Clock should show.
push button such as SET / CLOCK / TIME
push other button HOUR MIN up down seek scan ff rew (one button will control hour other button will control minute)
turn radio power back on. clock should remain set.

Push the "H" or "M" button until the radio beeps and then continue pressing either button to get to the right time. Push the power button on the radio to exit the time adjustment mode.

after you put in the code for the radio try turning the radio on by hitting the power button. there might also be an eneter button that you can push as well.

For the clock: Turn the radio on Push and hold in the clock button And push the seek button (left) for hours And push the seek button (right) for minutes There is no AM or PM
For the radio: Find a radio station on the radio Push one of the selector buttons on the radio and hold it down for about 10 seconds and release That's all it takes You should have 5 buttons for AM And 5 buttons for FM-1 And 5 buttons for FM-2

Good luck

Defective power switch in the radio itself

If this stereo is a clarion and original equipment and uses a a four digit code. First thing you do is with the power on to the radio, push and hold the band button for a few seconds until you see the word "code" on the radio display. Input the code and radio should work. If that doesn't work, then if you have tried to input a wrong code several times then radio will lock out. So what you need to do is
the radio has to be on for one hour uninterrupted, then you can do the band button procedure , code input again and hopefully the radio goes on. Hopefully this helps. Please advise results
.

Double check fuses, in case one of the power wires touch something and blew a fuse. You'll have 2 power, one with & without key on.

In the owners manual booklet there should be a radio code that you have to punch in in order for the radio to work. This is in case your radio gets stolen no one else can use it. When you change the battery or the battery goes dead you have to put this code in for the radio to work again. The radio code may be on a card inside the leather case the owners manual comes in.. This is where mine was.

call a near by dealer and the can help or stop by one