Do not inform my boss, I have managed to influence him that I'm only an expert at running benchmarks and writing about the effects :) -Test the principal winding of swap mode power transformer with flyback tester. Check also the flyback primary winding, b+ coil winding and horizontal yoke coil https://edgarxjwgq.theblogfairy.com/29851161/detailed-notes-on-power-supplies-refurbishment