Radio quite after battery disconnect ???

[Shes Mad]

I disconnected my positive side of the battery to fix a dash light. Now I have no radio, no lights in the radio, but a buzzing in my speakers that varies with the engine RPM. All fuses check out. I can only stop the buzzing by disconnecting the AMP.

Any ideas? It is an aftermarket stereo with a kicker amp.

 

[FJP971]

You should always disconnect the negative terminal, not the positive. You probably blew a fuse or fried your amp.

Sent from my SAMSUNG-SM-G870A

 

[120mm]

x2. Never, ever disconnect positive side first. Lesson learned, now you need to discover the cost of the tuition.

 

[Irish Reiver]

Are you sure you haven't triggered the security feature of the radio?

 

[jonheld]

x2. Never, ever disconnect positive side first. Lesson learned, now you need to discover the cost of the tuition.

Please elaborate on this.

 

[george_tlc]

Yeah, disconnecting the -VE first is safer, since if the spanner slips you can only short the -ve clamp/bolt to the -ve body, no big deal. So, there's a good 'safety' reason for disconnecting the -VE first AND fastening the +VE first.

But, in terms of the radio etc, doesn't make a freaking difference if you disconnect +ve first or -ve first. The electrons don't care...

cheers,
george.

 

[jonheld]

Yeah, disconnecting the -VE first is safer, since if the spanner slips you can only short the -ve clamp/bolt to the -ve body, no big deal. So, there's a good 'safety' reason for disconnecting the -VE first AND fastening the +VE first.

But, in terms of the radio etc, doesn't make a freaking difference if you disconnect +ve first or -ve first. The electrons don't care...

cheers,
george.

Thank you. I was wondering if perhaps I was missing something very basic for the last 35 years.

 

[Shes Mad]

Might have fried the amp---can't find any bad fuses anywhere. The radio doesn't turn on, but I am not sure if it's power comes from the amp

 

[Oscar Witte]

Don't think it's the amp, some stereos have a separate fuse right behind them in line. Or there might be a fuse port in the back of the stereo.

 

[Shes Mad]

Don't think it's the amp, some stereos have a separate fuse right behind them in line. Or there might be a fuse port in the back of the stereo.

Checked that fuse also. It was good

 

[Dominican FZJ80]

yes its probably the amp fried disconnect the radio from the amp and tried all by itself to see if it goes on a suggestion is buy lighted fuses if one blows it lights up saving you time I did a complete change to these an they work great