My radio is not working there is no power at all, does it need a fuse?

all fuse boxes, there is not just one;
and its marked RADIO.


radio will not work (what does that mean)
100% dead
asking for code
display dead or not
or display works but all stations dead.
what.
if 100%dead it can only be 3 things
1: fuse blow , i bet
2, wire cut to radio (called power B+)
3: the radio is dead, bench test it. ask

If your unit has digital display as most do now, RADIO-B will supply constant power to power the units memory so it can remember the preset channels, starting volume etc. The power antenna is usually controlled by a separate wire from the unit (normally blue) this wire supplies a low voltage signal to the antenna, The antenna will also have its own power supply and earth at the base of the antenna, the problem could be there. depending on the antenna, some have a controlling relay that is separate, again another possible source. there will also be a fuse in the main fuse box. These will all need to be checked, along with connecting a power source to the antenna to ensure the antenna does actually work.

there are two fuses that are associated with the radio,, one is the main power to the radio and the other one is through the accessory fuse ( this is why you can still see the time when pushed ).
remove and replace the radio fuse and all should be back to working condition.
when you put the new fuse in, try the radio,, it should be working. if it is not working,, check to make sure the fuse did not blow again,, if it did blow again then there is a short in the radio and that will need to be fixed or replaced.
also use a meter to check that you have 12 volt DC at the radio fuse,, if you have voltage at the fuse - then the problem could be in the radios wiring ( shorted wire or disconnected wire ) - remove the radio and trace out the wires checking for voltage as you go.

c...

The radio uses a constant power to retain memory(stations,settings,ect.) and switched power to run on. It sounds like there is a problem with the constant power connection. You can first check the fuse box for any blown fuses and replace any that are found. Also look around the battery for any wires with an inline fuse that could be broken. Try looking under the dash near the radio for any inline fuse holders that could have a blown fuse. You might need to pull the radio and start tracing the constant 12v power wire. First verify that it does have power and if it does then the radio may have been damaged from a voltage spike when the new battery was installed. If the wire does not have power then you will need to start tracing the wire back to the source of the short. It sounds to me like a blown fuse somewhere....

The clock working only means that the constant power is present to the radio, the key on power to the radio (separate fuse) could be bad.

Check all fuses for radio...In addition to the fuse in the fuse box, there could be inline fuses tucked up under dash or in rear of radio. There should be 2 live positive wires going to radio...one constant power, the other live when key is On or Acc..also check for good earth connection. Hope this helps.

go here this should help
2002 honda odyssey

let me know how you do and if you need more info
later paul

Pull the radio and check the wiring for power ground etc, if all is ok then you will need to send the radio out to an authorized repair shop.

If you already checked the fuse, you need to check for power to the back of the radio. If power is present there you will need a new radio. Factory radios are expensive, the best bet is to get an aftermarket radio and install it.