• Hello Guest! We're hosting a challenge to welcome vintage Intel macs to the MLA during the month of July! See this thread for more information.
  • We've made some quality of life improvements to the Trading Post. More info here.

Search results

  1. U

    Macintosh SE PSU 820-0385-A R309 Value

    I am trying to repair a 820-0385-A PSU. However, the casing for resistor R309 is gone and the resistor is a dead short. Does anyone know what the value of this resistor is? Also, what is the black mold-like corrosion on the bottom of the PCB?
Back
Top