P880PRS help...

[howdogg 10+ year member]

Hello everyone,

I need some help figuring out what fried. A positive speaker lead from one of the amps grounded for a second. After the incident, the head unit developed a horrific engine whine and all the speakers now pop when the head unit is powered off or the volume is turned to zero. Even with the engine off there is still an audible feedback noise present. (Other than these noise problems, the P880PRS still works prefect.) I swapped it with a different pioneer head unit and the whine/noise stopped, so it's gotta be something in the 880PRS.

Any thoughts on what fried? I suppose maybe something burnt in the preamp outputs thus causing the nasty engine whine. I'm hoping to get a few ideas from the users here so if I decide to take it to a local pioneer service center, I'll at least have some idea as to what needs to be repaired.

Thanks in advance.

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[thehardknoxlife 10+ year member]

There is a sticky for this subject. http://www.caraudio.com/forum/showthread.php?t=198477&highlight=pioneer+ground+loop

 

[howdogg 10+ year member]

Thanks,

I was aware of that sticky and of the ground loop problems sometimes encountered with pioneer head units. What i'm looking for though is information about what part of the head unit most likely suffered damage when that speaker lead grounded out. I didnt have any noise at all before the wire touch, so something in the head unit must have burnt or suffered some sort of damage when the wire touched. I'd prefer to get the damage repaired as opposed to simply covering up the symptoms.

Anyone have any thoughts as to what area of the head unit most likely fried?

 

[thehardknoxlife 10+ year member]

Thanks,I was aware of that sticky and of the ground loop problems sometimes encountered with pioneer head units. What i'm looking for though is information about what part of the head unit most likely suffered damage when that speaker lead grounded out. I didnt have any noise at all before the wire touch, so something in the head unit must have burnt or suffered some sort of damage when the wire touched. I'd prefer to get the damage repaired as opposed to simply covering up the symptoms.

Anyone have any thoughts as to what area of the head unit most likely fried?

Then maybe contact Pioneer.http://www.pioneerelectronics.com/pna/v3/pg/contact/us/0,,2076_310069585,00.html

(800) 421-1404

They can probably help better than anyone.