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Re: My 83 flashed over and now all hell is breaking lose

Rodney -

MV rectifiers are a royal pain , and flashovers can be fun - you should see what a pair of 866's at 1kv look like!

I'm a bit confused by a higher B+, damaging a capacitor or transformer would most likely lower the voltage. Perhaps the choke is now partially shorted?

For troubleshooting I'd suggest you make up a "solid state" 83. Connect a pair of 10 ohm 1 watt resistors across the two larger (filament) pins inside an old 4 pin tube base. Connect a pair of 1N4007's from the two smaller pins to the center of the pair of resistors (with the band of the diode towards the resistors).

With the solid state rectifier you've pretty much "simplified" the troubleshooting and the b+ should be at most 15v higher than originally. It should be pretty straightforward to trace the circuit from there.

To avoid the flashover in the future consider a time delay relay or damper diode to automate the delay.





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