UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Silicon · 24th Jul 2022, 8:57 pm

What test equipment do you have?

Start with the transformer. Measure the resistance of the primary winding from the mains plug.
Measure the secondary windings after unplugging the leads.

Is there any voltage on the main smoothing capacitors?

What is on the small PCB next to the fan?

24th Jul 2022, 8:57 pm	#5
Silicon Nonode Join Date: Jun 2007 Location: Coulsdon, London, UK. Posts: 2,163	Re: Broken Tenma supply What test equipment do you have? Start with the transformer. Measure the resistance of the primary winding from the mains plug. Measure the secondary windings after unplugging the leads. Is there any voltage on the main smoothing capacitors? What is on the small PCB next to the fan?