The V is supposed to be 7V and 14V output to the main board and I’m getting a reading of 14V and 17V. The heat sink is very hot and not touchable. I’m guessing this is part of the problem with the volume fluctuating. Everything else works ok. Is the Voltage to much from the power supply making the regulators work too hard? What part on the power supply is causing the issue? Anyone have a SQ-R power supply available? Thanks.