YACAT: Headunit's internal amp cuts out

[Shawn]

I've got a Pioneer DEH-P8600MP which was a display model for real cheap. The only problem is the speakers seem to cut out after 30 seconds or so of playing. It's fine with the RCAs but I wanted to power my headrest speakers with the headunit. Any ideas as to what would cause this?

I just spent 2 hours completely rewiring the speakers only to have the same problem. I just took the head unit apart and have been testing it with a multimeter and so far it doesn't look like anything is shorted. 😕

 

[Cdubneeddeal]

Ok..now with an external amp the speaks and such are fine?

 

[Shawn]

yeah, they worked fine with my pioneer deh-p750mp.

 

[Cdubneeddeal]

Well i'm wondering you said with the RCA's the speakers work fine?

 

[Shawn]

I have an amp powering my door speakers and my subs.

 

[Cdubneeddeal]

Ok..with that said. I'm tired. 🙁 Really the only thing that could cause that is the internal amp is overheating which i'm sure you already suspected. If you had a short, you wouldn't get any sound period and the HU would not even power up.

Now..after 30 seconds do the speaks just not have sound or does the whole head unit cut out? Sorry for all the questions. It's late, i'm tired. But just thought I would try to chime in to help.

 

[Shawn]

Only the speakers powered by the head unit go out. Everything else continues to work. Right before it goes out the sound starts to crackle almost like a loose connection, yet there is no loose connections.

 

[MrBaseball]

A friends Pioneer head unit was doing the same thing when one of the door speakers was bad. The internal amp was going into protection mode.

 

[blahblah99]

The RCA & internal amp of the headunit is powered off a seperate circuits... if it is cutting out then it is either bad, or something is shorting out one of the channels.

 

[Shawn]

Should I bother bringing this to best buy and trying to get them to fix it? They already fixed it once because the RCAs were not grounded properly. They wanted to replace it with one of "equal value". Well since I got it for dirt cheap, that would have been a bad deal. So I told them to send it off and fix it which they did (after a lot of arguing), but it took them 6 weeks. Should I go through that hassle again since it's still under warranty or should I just say screw it and hook those speakers to an amp?