BURNING RCAs and frying headunits! Major help needed.....

[av8ter 10+ year member]

My friends blazer started doing the engine noise through the subs deal so I decided to do the grounding of the RCAs deal. Fixed the problem for like 5 minutes until we turned the car off then back on again. Engine noise came threw the subs once more and the RCAs running from his Pioneer 5100UB to his Powerbass Monoblock began to burn and smoke. We shut the car off.

We figured it was a fried headunit so we replaced it with a newer Alpine in hopes of it being a Pioneer specific problem.

We wire up the Alpine. Test it out. Plug in RCAs, and the RCAs began to heat up at the back of the headunit.

WTF did we do? Problem is scaring the shyte out of both of us.

Any Ideas?//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

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[basscort2009 5,000+ posts]

new rcas first off. ground the alpine rcas as u did the pioneer. maybe run a seperate hot/ground from front battery to the radio. (like 12 gauge). make sure no wires are touching, i mean bare wires

 

[av8ter 10+ year member]

We have gone through 6 sets of rcas today. I know they are not the problem because I use the same models in my teg.

Any other ideas besides new ground and power?

Headunit has power and the stock negative on the radio harness and another ground strap that we have installed as grounds.

We are stumped......

 

[smoka 10+ year member]

Whatever amp the rca's are connected to is not grounded properly. It is using the rca's as a ground which means you are pulling alot of current which is why its heating up.

 

[Horsemanwill 10+ year member]

Whatever amp the rca's are connected to is not grounded properly. It is using the rca's as a ground which means you are pulling alot of current which is why its heating up.

he maybe right. if you leave the rcas outa the amp do they get hot still? if not then the problem is in the amp. you could also try another amp to see if that's the problem.