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Teardown and repair of an GW Instek PSW80-40.5 1080W multi-range programmable power supply

Posted on Friday, November 30th, 2018 in power supply, Teardowns by DP

GW Instek

Teardown and repair of an GW Instek 1080W power supply from The Signal Path:

In this episode Shahriar investigates the failure of a GW Instek 1080W power supply capable of providing up to 80V and 40A of programmable output voltage and current respectively. The power supply does not power on. However, relay noises can be heard inside the instrument during power on.
Teardown of the unit reveals a modular design with PCBs on all sides. The instrument comprises 6 different modules and 3 complete power supplies in parallel. The controller circuit is powered from the middle power supply module. Examination of the boards reveals three separate failed devices.

More details on The Signal Path site.

Check out the video after the break.

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