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This Post Has Been Edited by the Author
In Reply to: RE: 5R4GY and filter cap values posted by DewDude on March 22, 2017 at 07:13:02
Glad it worked out. In retrospect, I should have taken a look at the 5Y3 datasheet to see that it has a 440mA peak repetitive current rating which is two thirds lower than that of the 5R4GY. That would have put any concerns to rest since the 5Y3 has been running in your amp for a long time without issue.
At the very least, now you know how to check for compatibility with other rectifiers in this or other amps. PSUD might have its limitations, but is a very nice and simple utility for stuff like this.
In the future, if you ever get the inclination to do a mod/upgrade, you might want to consider replacing the 120 Ohm series resistor with a filter choke such as the Triad C-17X. It's a small choke and fairly inexpensive and I think that it would offer a decent improvement in sound over the resistor.
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