Head Unit Blowing Fuses

[vincemarq 10+ year member]

Hi. I have a Pioneer DEH-P4600MP and today it stopped working. Upon visual inspection, I pulled the little 10A fuse and saw it was blown and the hu smelled like a cap gun after firing a whole ring of caps. So then I went to Kragen to buy more fuses and then replaced the blown fuse with a new one. I reconnected the wiring harness and the hu powered up but there was no sound! So i turned off the hu, turned it back on, but then it wouldn't turn on again. I checked the fuse and it was blown AGAIN!

After that, I put in an old jvc hu and it powered up and provided sound just fine! My question is, is there anything I can do to make it work or will pioneer be able to fix it under warranty (it's about 4 months old). Oh yeah, what could cause my hu to act like this?

Thanks for all your help!

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[supa_c 5,000+ posts]

Warranty should cover this.

That is if it was from an authourized dealer.

Definetly get a new h/u if you can

Something must have shorted out for that to happen.

Thats all i can think of

 

[vincemarq 10+ year member]

Thanks Supa! You're always here to help, even at 1am! //content.invisioncic.com/y282845/emoticons/clap.gif.178cba2c538c68e720c727fcb024b19c.gif

 

[supa_c 5,000+ posts]

Not a problem. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i usually go to bed around 1- 2:00.

 

[KaeZoo 10+ year member]

Before you put a new head unit in, check the resistance of all your speakers. I once saw a vehicle that went through a couple Pioneer head units because one of the speakers had a shorted voice coil. It showed almost no DC resistance when tested with a multimeter. Over time it damaged each of the head units, after blowing both vehicle fuses and head unit fuses. We didn't catch it early because my idiot co-workers tried just replacing fuses with larger ones, instead of tracking down the real problem.

 

[supa_c 5,000+ posts]

Something must have shorted out for that to happen.

once saw a vehicle that went through a couple Pioneer head units because one of the speakers had a shorted voice coil.

Well, whadda know