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We troubleshoot and repair a ballast that was connected to a power supply that had high voltage damage. This led to the ballast having a shorted switching Mosfet for the DC power to the rest of the ballast. The P18N50 www.onsemi.com... was shorted across every pin. I have a suitable part that was salvaged from another power supply.
I hope this comes in helpful if you run into ballast problems. Thanks for watching!
Trying some new editing software that seems to be a lot easier to work with...