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| | |-+  Bluesbreaker, Lar/Mar PPIMV problem. Help!		 « previous next »
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Author Topic: Bluesbreaker, Lar/Mar PPIMV problem. Help!  (Read 4542 times)
camsna
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« on: September 19, 2016, 04:59:02 PM »
I did the mod just like this (220Ks off the board, CDEJK connected as shown to dual 250k pot w/2.2meg resistors):





Bias is up now over 200mv. What am I missing/doing wrong?
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camsna
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« Reply #1 on: September 19, 2016, 05:04:44 PM »
Also -- I kept J/K connected as per the original layout. So pin 5 of each power tube connects to a 5.6k resistor, J/K on the main circuit board, and the middle lugs of the 250k dual pot.

That the problem?
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