Hello there
I have a music mixer failing components downstream from the PSU.
After some investigation, I realized the voltage output from the PSU is higher than specified on the board or schematic.
Output should be +/-12 however reading 19v or higher. I attached a 10ohm 3w resistor to pins 9 and 3 on CN1 (see schematic) and the 12v rail jumped to 26 v.
The black connection of the DVM doesn't appear to across the output but instead look to be measuring with respect to chassis. The output needs to be measured with respect to TGND
The black connection of the DVM doesn't appear to across the output but instead look to be measuring with respect to chassis. The output needs to be measured with respect to TGND