hello,
my rear channel output from subwoofer is having problem, the rear left strangely output -9.x volt, while rear right about +12v.
the front and center channel working normally and giving about +13v.
i open the subwoofer checking the power supply is good, 3.3v, 5v, 12v, 46v all okay when I measure them without connected to controller pcb board. as soon I connected psu to controller, all voltage reading is all wrong, I think I got short circuit somewhere.
i'm looking for sign of burn in component in controller pcb and not found anything strange, no burnt smell too.
then I found rear left positive output (red) is somehow short to ground, the negative output (black) is looking okay. what do you think is wrong here? rear right show no sign of shorting but it's not giving output sound too.
subwoofer and 3 channel front and center is still working by the way, it just rear channel is having problem. if this help, i got Logitech z906 from my friend and there was no center satellite. the problem start after 2 hour or so I put non Logitech z906 center and rear satellites for testing. it was fenda f6000 satellites. I don't know if that causing the amp fry or something because I use non Logitech satellites? is it possible?
the reason I use non Logitech rear speakers was for testing only as it's already in mounting, and I still didn't have mounting for Logitech one. that and for center speaker I couldn't help as this system I got come without it from my friend. and now I'm in regrets.
please help me, I got little knowledge for troubleshooting the circuit. also sorry for my English, I hope I make my question clear.
thanks.