27-06-2020, 05:40 PM
Hi All,
I've had my first opportunity to have another look at the amp.
With the chassis now out of the cabinet and all valve removed, I have checked with power on:
- chassis to earth connections on the transformer side - 0V (expected of course) and <1R
- green heater wires to earth - 3.3V with no load
- black rectifier heater wires to earth - 6.2v with no load.
I have a new JJ dual 50uF 500v cap and a new 16uf 475V cap so I am now thinking its not worth testing the old ones now for working leakage but just replacing them and see what effect they will have.
Best Regards
I've had my first opportunity to have another look at the amp.
With the chassis now out of the cabinet and all valve removed, I have checked with power on:
- chassis to earth connections on the transformer side - 0V (expected of course) and <1R
- green heater wires to earth - 3.3V with no load
- black rectifier heater wires to earth - 6.2v with no load.
I have a new JJ dual 50uF 500v cap and a new 16uf 475V cap so I am now thinking its not worth testing the old ones now for working leakage but just replacing them and see what effect they will have.
Best Regards
if all else fails...read the instructions!
