Given there is no trickle power it is likely the power supply. Power Supply Model: DPS-980AB A Rev: 01F (Manufactured by: Delta) From this, can anyone tell how to test the power supply (short jumpers?)? Found attached image of power supply pinouts.
Removed power supply and tested the fuse. I don't have trickle power, so is that logic board, power switch, or power supply? What is odd is it does not state what the source of problem is if there is no trickle power. LED 7 should be green when the DIAG_ LED button is pressed, indicating that the main power is OK and within regulation. Plug in AC power cord, and press the power-on button on the front panel. LED 1 should be yellow when the DIAG_ LED button is pressed, indicating that trickle voltage is present.ĭiagnostic LED 7 indicates that the main power is OK and within regulation. If the computer still doesn’t power on, follow the procedure outlined below to determine whether the issue is related to the power supply.ĭiagnostic LED 1 indicates the presence of trickle power required by the logic board to begin the startup process. If the system fails to power on, rst reset the SMC as described in this chapter. To power on, the computer’s logic board requires “trickle” power.
