SMPS Schematic
https://www.allen-heath.com/media/xone_db4_db2_004_066_psu_2.pdf
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.
What may be going on here?
https://www.allen-heath.com/media/xone_db4_db2_004_066_psu_2.pdf
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.
What may be going on here?