This will have all my repairs.

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  • Repairing GW Instek GPD-3303S

    I was given a GW Instek GPD-3303s triple output power supply for repair. The unit did not have a voltage on Channel 2. Channel 2 was going into constant current mode whenever outputs were turned on. This implied that there was a short so I started taking the power supply apart. The cover was easy to take off. 4 screws on top and 6 screws in the back. I looked at the outputs of the power supply and I saw diodes across the outputs. I started looking at all three channels with a multimeter to see if the diodes aren’t shorted.