I would like to just converse with one person here but I am still under moderation and I can't do that. This was the latest thread I could find related to my inquiry. I just joined with some questions specific to Audioromy FU-29. I've been rolling power tubes for this amp with 828B, GU29, 3E29 and 1 CVxxx something today. I am at least a little bit above entry level in terms of tube rolling (last done with smaller tubes about 8 years ago) and parts replacements. Not comfortable doing bias adjustment and no means for tube testing, I was ready to waste some tubes from red plate. So far got 2 pairs good (3 pairs now good including the original FU-29) by just detaching/inserting new tubes. Two pairs showed red plate. I was not able to watch fully the last tube with red plate and it burnt one of the 1.2K ohm resistor (R57 in version 4.0 of the PS board).
As I will be ordering resistor replacement, I might as well order some replacement capacitors for the possible recap of the input board. I just can't interpret fully (even with initial web searches) the cap labels on the attached pics.
pic 1: Is that 0.22F or 0.22uF 250V? What is the A after 250? Is fake WIMA cap visually detectable?
pic 2: 0.1F or 0.1 uF 250V?
pic 3: 47uF 400V? What is the M after 47 u?
Thanks much,
gil
As I will be ordering resistor replacement, I might as well order some replacement capacitors for the possible recap of the input board. I just can't interpret fully (even with initial web searches) the cap labels on the attached pics.
pic 1: Is that 0.22F or 0.22uF 250V? What is the A after 250? Is fake WIMA cap visually detectable?
pic 2: 0.1F or 0.1 uF 250V?
pic 3: 47uF 400V? What is the M after 47 u?
Thanks much,
gil
