Help

[Slim304]

Have a cobra 29 ltd classic with an rfx 75 won't power up I checked voltage at the back of the plug and reading nothing no protection diodes or traces blowed could there be something bad in the rfx

 

[Cable Guy]

I checked voltage at the back of the plug and reading nothing

So you aren't getting voltage going into the radio? Is there a fuse inline on the power cable? Check that.

 

[nomadradio]

If it was installed properly, there will be a separate plastic snap-together fuse holder inside the radio, feeding power to the RFX.

Do you have a multimeter or any way to check continuity or DC voltage?

73

 

[nomadradio]

I checked voltage at the back of the plug and reading nothing

If the power cord is not delivering juice to the socket, the problem must be upstream from the radio. What source of power are you using to energize the power cord? Any chance the power cord's fuse holder has gone bad? They don't last forever.

73

 

[Slim304]

So I checked all that is good getting power to the plug in all the protection diodes look good no burnt traces on the board still won't power on

 

[Xracerx13]

check power at the on/off/vol switch. red is power to the switch, check that first, then check and yellow or orange wire is power out of the switch to power the radio on.

If thats not it then it could be the 8v regulator IC or a bad solder joint on it

 

[Shadetree Mechanic]

If there is no voltage at the back of the plug, but power on the cord, the problem must be between the two.

 

[nomadradio]

good getting power to the plug

But not to the socket?

73

 

[Slim304]

Figured it out wire was broken on the volume knob thanks for the help

 

[nomadradio]

Rock on! That's all it takes to shut down the whole show.

73