Folks,
New Alpha M9000 owner here. I don't really know much about the Alpha platform. I have a question regarding the sound. The cabinet I have has 3 speakers. Two above the display and a larger one in the belly.
Only the right top speaker works. I've swapped the rca inputs from the CPU into the soundboard and still only the right speaker worked. (This tells me that the CPU is outputting 2 channels and that the 3.5mm headphone jack to RCA cable is working)
Next, I moved the speaker wires from the right speaker to the left and then the left speaker worked. (So I know that the speaker is good)
Before I look for a replacement soundboard or I attempt to repair my soundboard (I was going to cut out the existing amp chip and solder in a new one), I want to verify that all speakers should be working. I've attached a picture of my soundboard. I can't seem to be able to clearly read the part number (to look for a replacement if I need to.....It is either 20147, 2B147 or 28147)
Thanks.