Radio Power Problems

[RMH]

I have a 2001 Lexus GS 300 that has no power to the Radio/CD unit. I have checked fuses under the dash and under the hood but have found none that are blown. I am trying to determine whether the issue is with the unit or whether it might be else where. I do not want to buy a new device and have the same problem occur. Can anyone help me in determining where the problem may be?

[Crime Scene 954]

Im having the same problem in my 05 is 300. I had some major rear end work done an they possibly disconnected the battery an antenna. Now there is no power at all to radio. Any advice helps.