03-24-2013, 08:32 PM
Hi Eric
There is something funny going on here. All of your tube are 2.5v heaters except for the 42 it's 6.3. I'd replace the 42 with a 2A5 as it has the right heater.
Terry
There is something funny going on here. All of your tube are 2.5v heaters except for the 42 it's 6.3. I'd replace the 42 with a 2A5 as it has the right heater.
Terry