Unable to turn off primary magnetrons

[Rynoth]

Aeroconversions email response:

"We will send you new magnatrons. We did have a batch of magnatrons that proved defective in this manner but there is no field test for them beyond making sure the wiring is correct and then running the engine and seeing if the magnatrons can be shut off with the switch."

[Rynoth]

Installed my new magnetrons today. First I installed the top mag only and started the engine. When I flipped my mag switch, the engine clearly dropped to only 2 cylinders. I then replaced the bottom mag and repeated the test and the engine immediately quit. Everything now functions normally, it's clear that my original 2 mags were both bad.

[ScottM-Sonex1629]

Ryan:

Just ran across this older post from last fall. I had the same problems, talked with Joe at Sonex and he had me confirm the same sequence of wiring troubleshooting. My results were identical and they shipped me new Magnetrons. Completed the change out last weekend and it also fixed the problem. So there was a bad batch of magnetrons shipped at some point I pin 2014 for those still building who haven't run your engine yet keep this in mind.

AEROVEE s/n 0766 for mine, shipped in May 2014.

[flyingbear]

I bought a ONEX project initially sold in 2013 and my magnetrons would not shut off while I was preparing it for inspection. After lots of troubleshooting I contacted Sonex and they agreed to send me new ones at half price. They had initially years ago replaced them for free but would not for me because I had bought the project from someone else. So, I paid about $90 for two with their half price deal and found that was still about double what I could have gotten them on line for. I know they have to make money but I just do not think that is good customer service.

[WannaFly]

Mine did the same thing---i see you contacted support. They had a batch of bad mags that would not shut off.