trebor smith
Premium Member
- Model Number
- SD997S
- Brand
- Panasonic
- Age
- 1-5 years
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.
manualslib.com/manual/1226541/Panasonic-Nn-Sd997s.html?page=18#manual
Pics:
https://i.postimg.cc/y60K31xL/57543521-276306653323465-4092788341970305024-n.png
https://i.postimg.cc/bN8hQ72p/57775052-2330404867019575-8867768209537761280-n.png
https://i.postimg.cc/httRYVrY/58383486-289828121930481-4005426147369156608-n.jpg
https://i.postimg.cc/L6TMvxzf/58689415-2296002333974229-3245941325161299968-n.jpg
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.
manualslib.com/manual/1226541/Panasonic-Nn-Sd997s.html?page=18#manual
Pics:
https://i.postimg.cc/y60K31xL/57543521-276306653323465-4092788341970305024-n.png
https://i.postimg.cc/bN8hQ72p/57775052-2330404867019575-8867768209537761280-n.png
https://i.postimg.cc/httRYVrY/58383486-289828121930481-4005426147369156608-n.jpg
https://i.postimg.cc/L6TMvxzf/58689415-2296002333974229-3245941325161299968-n.jpg