UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Cossor 494AC. My first proper restoration

PJL · 9th May 2009, 1:01 am

It's unusual for valves to end up with zero emissions. Do the heaters light up? Have you checked the value of the cathode resistor? should be 270 ohms. Cleaned the socket carefully?

9th May 2009, 1:01 am	#4
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Cossor 494AC. My first proper restoration It's unusual for valves to end up with zero emissions. Do the heaters light up? Have you checked the value of the cathode resistor? should be 270 ohms. Cleaned the socket carefully?