Lost power, when power went on no power to radio. outlet has power clock on same outlet works fine

Idid see a service bulletin concerning radio. sound and display lost after engine crank. turn key off, then back to accessory position, radio functions work. the fix is to reprogram radio with new software. I also saw several codes listed for radio, they were manufacturer specific codes. did you check for codes?

I have had several different makes of clock radios and all said that it was battery back up for power failure
none worked and all settings had to be redone
power surges do not trip breakers as they are in effect a fuse to prevent damage to the wiring in a dead short situation or when a unit fails
even surge protectors will still pass power after a surge but will no longer protect against another surge

There is a battery backuo in the radio. This is probably powering the clock. It looks like the radio power supply is either fried or the hardwired fuse is blown.
Take a look at the manual. If you take out the battery back up does the clock still work? GPX MP3 Player KC232S user manual

Let me ask a few questions: The items mentioned, radio, clock and power outlet...are these the only items not working? does the instrument panel light? Also , does the cigar lighter work? Lastly check fuse # 7(40A) in the battery junction box


I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Hello there,
First you need to check if it is receiving power, try to connect the cord to another device to see if it will power it up. If it does, then it means the power cable is okay and does not need replacement, but if it does not power it up, then it means the power cord is bad and need to be replaced.
If the power cord works perfectly fine, check if the outlet is supplying current by plugging some other device to it to test if it is working.
If the power outlet is okay, then it means the problem is from the power board inside the unit of the denon clock radio. Have the power board checked for bad capacitors. If none found, replace the power board.
This time it should work.
Would be glad to know if this information was helpful to you. All the best Elect_Comp

The Wave Radio uses the AC power cord as an antenna. Perhaps the two outlets are wired differently regarding ground and hot.

An interesting article...

http://www.gcaudio.com/resources/howtos/acpolarity.html

As the man says in the article thecircuit tester like this...

http://www.idealindustries.com/products/test_measurement/electrical_testers/circuit_tester_e-z_check.jsp

... can be found at many Dollar Stores for cheap.

You have 2 fuses/power wires for that, 1 will be constant power and other will be when key turned on.

check your fuse box

Hi - You can download the manual from the link underlined in blue below:

RCA RP5420



Please update the question & let us know if the information given was useful to you - Good Luck!

You can download the manual from the link below: http://157.254.235.130/public/RP3721%20EN.pdf Please update the question & let us know if the information given was useful to you - Good Luck!