JJ 5AR4 mis-wired

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In Reply to: Re: Are you sure about your substitution??? posted by kyle on September 2, 2003 at 14:46:35:

Kyle,
FYI. On a tube guitar amp board, several folks found out that the JJ 5AR4 was mis-wired, at the factory. This mis-wiring is visible at the based of the tube.
"Apparently, some have the cathode connected to pin 2 instead of 8, according to info on a Japanese tube vendor site (someone pointed this out on their BB and the vendor confirmed that this was the case with the JJs they had in stock).
According to the poster, this means that all the rectified current travels through the heater and means drastically shortened life (the vendor confirmed/agreed and commented that they were consulting with JJ about the matter)."

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Follow Ups Full Thread

Topic - Arcing rectifiers - kyle 13:47:22 09/02/03 (5)

What is the uF for the first Capacitor of the B+ - Chris O 08:40:02 09/03/03 (1)

Re: What is the uF for the first Capacitor of the B+ - kyle 15:31:09 09/03/03 (0)

Are you sure about your substitution??? - vrogers3 14:14:16 09/02/03 (2)

Re: Are you sure about your substitution??? - kyle 14:46:35 09/02/03 (1)

JJ 5AR4 mis-wired - steve oda 19:02:20 09/05/03 (0)

Follow Ups

JJ 5AR4 mis-wired - steve oda 19:02:20 09/05/03 (0)

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