02-19-2017, 09:26 AM
Looks good. Check your AC line current draw with the new rectifier. I'll bet its a lot lower now due to the decreased output plate current
Yes, the bias on the output tubes is very important. With low bias the tubes overheat, liberating gas inside the tube. This causes the plate current to increase further resulting in a runaway condition. The final result is a meltdown of the power supply and/or the output transformers.
The line fuse should provide some protection, but make sure it is the correct current value (or lower!). Sometimes people replace the fuse with a higher amp rating which is a recipe for disaster.
You probably should replace the green molded line bypass cap with a safety rated type. There is another identical cap across the power transformer secondary.
Yes, the bias on the output tubes is very important. With low bias the tubes overheat, liberating gas inside the tube. This causes the plate current to increase further resulting in a runaway condition. The final result is a meltdown of the power supply and/or the output transformers.
The line fuse should provide some protection, but make sure it is the correct current value (or lower!). Sometimes people replace the fuse with a higher amp rating which is a recipe for disaster.
You probably should replace the green molded line bypass cap with a safety rated type. There is another identical cap across the power transformer secondary.
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