Fuse blown need help

I know a guy who blew a fuse. I don’t judge him, he needed the money.

 

I think the speakers for your mids and highs get one short somewhere, or grounding out somewhere in the run of speaker wires. Check your ohms on your speakers with a dmm if you have one. Any of your speakers sound different than the others?

 

Just imagining where wires might be run I would look under the plastic door jam molding, or whatever it’s called. Probably on driver side and a good potential for wearing.

 

Op . My post ment to say replace fuses blown on amp , disconect speaker wires at amp. Turn on stereo and connect speakers at amp 1 at a time . If theres a short should blow fuse. Just a faster way to try to isolate if its speakers and which one .If say when you connect rf speaker and fuse blows remove those wires and connect diferent speakers at same terminals . If blows again amp is the problem . If not speaker or that speaker wires shorting or no good. Since all 3 fuses blowing would think amp took a crap.
Just edited

 

+1

A digital multimeter is the best way to go about this. Fuses are there to protect components and wiring so it's generally a bad idea to troubleshoot by intentionally continuing to blow them.

Start by disconnecting your speaker wires from the amplifier, and use the meter to verify there isn't a short circuit, and that the speakers themselves aren't shorted or open. You can also verify voltage out of the speaker output of the amplifier channels by playing a test tone and measuring AC voltage across the speaker terminals (a test tone will provide a constant voltage to measure).

This could be either a speaker, speaker wiring, or amplifier issue. I don't think it's an issue with power, and a bad ground shouldn't blow fuses.

 

Wouldn't it have 4 since it a 4 channel amp?

 

3 fuses never go all one time though.... well tomorrow gonna redo all the wiring and reconnect like you said...

 

No

 

Might be a speaker wire short somewhere? What I set the multi meter too...

 

Idk haven played any music and replaced any fuse after they blew

 

Soo disconnect all speaker wire from amp check with multi.meter from the disconnected side? What suppose to read? And if short what gonna read. Sorry never had this problem before and trying to get step by step. Also leave speaker wire disconnected from amp and replace all 3 fuses? Shouldn't blow fuse when turn on? If soo amp shot?

Gonna redo the grounds too soo it a clean and better connection also not loose or touching any other parts if it was...

 

try this?

https://www.doityourself.com/stry/how-to-test-a-speaker-wire-with-a-voltmeter

 

I'd agree with the speaker wire or tinsel leads having a high probability of causing this. Could be the amp too though.

Here's where I'd start. Pull the speaker wires off of the affected amp. Using a multimeter, measure resistance (the horseshoe looking thing) of each set of speaker wires. Most car speakers are around 4 ohms so you should see something close to that - within 15% or so. If one is quite a bit different from the other then you may have found your culprit. Very low resistance on one of the channels (short, accidental ground, etc) could do this but I'd expect it to do so pretty fast.

If that doesn't give the problem away, maybe bench test the amp.

If still no luck, might be time to inspect all the wiring.

 

Disconnect both side and connect one side of pair wires and measure ohms? Measure ohm on speaker too? Amp? What reading?

 

https://www.youtube.com/watch?v=TdUK6RPdIrA

 

wat

 

To check if there short for the speaker wire

 

resistance check report then back result with

 

All wires and tweeter speaker test and separated?

 

At amp disconect each speaker pos and neg and 1 test lead on pos the other test lead on neg. Do 1 at atime since you seemed confused . Meter on ohms take reading for each then check back with readings .
No need to disconecting speaker etc yet . Get readings first.