20-02-2019, 02:18 PM
Thank you, Jeffrey - my fault for jumping to conclusions! The situation as described by Lynton is bizarre! Alternate half cycles leapfrogging two stages of smoothing and missing out on the voltage drop of 9.3Ω (or even more!)
I think the best plan of action for Lynton is to measure the voltage across C29, rewire the rectifier as per the Trader sheet, check that the values of R15 and R16 are correct, measure the voltage across C29 again and report back.
If the first voltage reading is significantly above 1.4 volts and has been like it for some time, it doesn't bode well for the condition of the valves.
I think the best plan of action for Lynton is to measure the voltage across C29, rewire the rectifier as per the Trader sheet, check that the values of R15 and R16 are correct, measure the voltage across C29 again and report back.
If the first voltage reading is significantly above 1.4 volts and has been like it for some time, it doesn't bode well for the condition of the valves.
