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Author Topic: Trying to modify Panasonic SD997S to become UV curing oven... Won't stay on..  (Read 155 times)

Offline rsilvers

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  • Member Since: Apr 2019
  • Posts: 1

I removed the magnetron and the magnetron power supply and replaced it with a 100 watt UV LED and LED driver. The power that would normally go to the magnetron power supply now goes to the LED driver, and a 12v power supply for a heat-sink colling fan. I removed the inverter power supply completely.

The problem is that it shuts off after 2-3 seconds. This is because the 3-wire CN3 is not getting the proper signals from the power supply CN701.

I was hoping I could just jump those wires, but it seems like they are some kind of pulse-width-modulated inverter feedback that is hard to fake.

Any idea how I can mod this control board to keep the power to the inverter board on for the duration of the timer? Maybe if I put the inverter power supply back and let it get energized but don't have the magnetron in place? I suspect that won't work either as it will know that the magnetron is not drawing power.

https://www.manualslib.com/manual/1226541/Panasonic-Nn-Sd997s.html?page=18#manual

Pics:
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