Radio not working

PeteDJ1510

Hi. I bought an used Grand Cherokee Laredo 2012. AM and FM radio can't be listen but the aux input. The aux input can be listen intermittently (few seconds music heard, few second silence, few seconds sound). Sometimes you can listen music consistently without interruptions of silence.

I removed radio from dash and removed upper and lower cover of the radio and sprayed an electronic cleaner spray inside radio and inside front inside piece. I left it to dry and connected back. It started to work PERFECTLY! I can listen to AM, FM, AUX, and CD without silence batches.

I listen it a few minutes, turn off the radio, remove the radio again, and place it back.
No I can't listen to anything. Even the radio do not turns on and I can't see the digital clock. I checked the radio fuse under the hood and it is not blown.

Do you know if the radio have an internal fuse that can be replaced? Did I "shorted" the radio with the electronic cleaner spray?

Keep me posted.