Need advice on troubleshooting PDX-F4

[Djent]

Equipment installed:

- (2) DC XL 18

- (1) DC 5.0K

- (2) D3400

- (1) Mechman 270amp Alt

- (1) Rockford 3Sixty.3

- (2) Focal Polyglass 3-way components

- (1) Alpine PDX F4

- (1) Alpine IVA-W505

- Lots of KnuKoncepts OFC

- SHCA fuse holders

Link to build: http://www.stevemeadedesigns.com/board/topic/193473-06-silverado-re-build-dc-xl-18s-dc-50k-3sixty3-mechman-alt-etc/

I have been having issues with my PDX-F4 4 channel. It cuts out and the red light turns on until I turn off power and restart. I was thinking a wire somewhere came loose and is causing a small short possibly?

But, in the mornings on my way to work - it does not happen (even at full tilt) and my drive is about 30mins. Only on my way home does this happen - and I mean constantly. I thought it was possibly heat, but I have monitored the heat in morning vs. night and I don't see much difference.

I have an older 4 channel amp I could toss in to see if the results repeat, or I can start removing panels to find possible loose connections.

Does anyone have experience with this, or has ideas to make the troubleshooting less of a PITA?

[Djent]

I searched for any loose connections yesterday, and couldn't find any. Could this be a possible internal issue with the amplifier?

Any other ideas to try before installing another amp, and checking for correlation?

[Lorin Thwaits]

Try cutting the problem in half -- only connect half of the 4 channels and see if it still cuts out. Most likely a problem with a speaker wire touching ground at some point during the drive. Notice if it happens in the same place during the drive -- maybe a nice bump in the road that rattles things just the wrong way.

If it still doesn't work then I like experimenting with electronics, and would buy your amp if you'd like to sell it. You can get in touch with me at: http://polangeles.com/contact