Make sure the cable is securely seated in connector J3 on the video riser card and at J11 on the logic board. The voltage should read 28 V (+0.5 V -1 V). Locate J3 on the video riser card, and check the voltages from the back of the card as shown below.Ħ. 922-5463 Apple Replacement Power Cord (PB G4/IBook Snow) for 65W AC Adapter - NEW Apple Replacement Power Cord (PB G4/IBook Snow) for 45W AC Adapter NEW For 65W AC Adapter NEW Where used:iBook (14. Apple Airport Express Wireless Card 802.11B M7600 15.53.
Macbook g4 power adapter mac#
The LED on the DC-to-DC board is a good indication the power adapter is functioning however, you can further verify the power adapter by checking the voltage at connector J3 on the video riser card.ĥ. Modem, 56K, V.90 Power Mac G4 Early 2001 15.53. Verify the green LED on the DC-to-DC board is lit as shown below.Plug the power adapter into the computer.79.95 Quick View USB-C to MagSafe 2 Adapter. The LED on the DC-to-DC board is a good indication the power adapter is functioning however, you can further verify the power adapter by checking the voltage at connector J3 on the video riser card. 60w Genuine Apple MacBook MagSafe AC Power Adapter. Verify the green LED on the DC-to-DC board is lit as shown below. Ensure a known-good power source and power cord are connected to the power adapter. Plug the power adapter into the computer.Ensure all cards and cables in the computer are securely seated.When connecting the volt meter leads to specific pins, make sure the power adapter cable remains securely plugged into its connector on the logic board. Note: To verify the power adapter, you need a volt meter. Then follow the procedure below to determine if the symptom is related to the external power adapter. If the system fails to power on, first reset the PMU. To power on, the computer's logic board requires a "trickle" power of 28 V.
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