Okay so I have a 2008 Mazda 3 and my radio and lcd screen just went out. I replaced the 7.5 fuse under the dash which was blowed and it worked. However it only stayed on for like 10 minutes and it blowed again. I then put a 25 fuse in it and the lcd screen is working but the radio won't turn on. Any suggestions on what is causing this.

Please and thank you for any information you might have on this subject.