12-06-2022, 03:52 PM
Thank you for the reply Jeffrey.
I don't have anything like a megger here to test components.
I have had to replace the ul84 with another as I had around +650mv on the grid, a replacement ul84 has brought that down to around +70mv , I still have a small pos voltage on the grid so I will replace the cap.
A polyester cap will be the replacement but it will be surrounded by heat from the rectifier and output valves plus the heat from the dropper resistor, not sure what the lifespan of it will be.
The green cap across the mains is staying
.
Danndad.
I don't have anything like a megger here to test components.
I have had to replace the ul84 with another as I had around +650mv on the grid, a replacement ul84 has brought that down to around +70mv , I still have a small pos voltage on the grid so I will replace the cap.
A polyester cap will be the replacement but it will be surrounded by heat from the rectifier and output valves plus the heat from the dropper resistor, not sure what the lifespan of it will be.
The green cap across the mains is staying
.Danndad.
