I had a working PS1 Digital and X-Station installs but no audio and no controller input. Replaced controller, audio flex, and GPU flexes (all new - borked up removal - don't ask). Now, no blue LED, no power LED when PSU connected to board (but green LED on when disconnected from board). Weird clicking sound from PSU when connected and powered on.
Checked all pins on GPU and audio. I get continuity between each GND and adjacent 3.3V on GPU and same between pins 2+3 and 3+4 (NC) on the audio flex. If I shine light through the board and magnify, I cannot see any bridges and my flex pads look on center with the pins. I also get a beep between controller pins 7+9 and two of the serial pins on opposite sides (suspect GNDs or GND + V but no diagrams on the web).
I can't imagine every GND is bridged w/ 3.3v and 5V. I'm a simp but not that bad at soldering.
I feel like I'm missing some basic knowledge about how grounds and voltage rails work. What could cause all GNDs and adjacent pins to have continuity? Could flexes be off-center? Short somewhere upstream? Any help appreciated - even if you think I should give up
Checked all pins on GPU and audio. I get continuity between each GND and adjacent 3.3V on GPU and same between pins 2+3 and 3+4 (NC) on the audio flex. If I shine light through the board and magnify, I cannot see any bridges and my flex pads look on center with the pins. I also get a beep between controller pins 7+9 and two of the serial pins on opposite sides (suspect GNDs or GND + V but no diagrams on the web).
I can't imagine every GND is bridged w/ 3.3v and 5V. I'm a simp but not that bad at soldering.
I feel like I'm missing some basic knowledge about how grounds and voltage rails work. What could cause all GNDs and adjacent pins to have continuity? Could flexes be off-center? Short somewhere upstream? Any help appreciated - even if you think I should give up