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In Reply to: In some 30 years of fooling around with high-end audio equipment, I cannot remember ever... posted by jeffreybehr on April 26, 2007 at 10:35:11:
CJ does not remove the flux?
Follow Ups:
I think the flux become more noticeable as the amp ages. I called CJ service to ask any advise . They told me " If not broke .. don't fix !! ", but i still went ahead and use IPA to clean them. I didn't hear any sonic difference :)
about the flux getting more moticeable as the amp ages. The flux being organic in nature, tends to carbonize with heat. The pins certainly get quite hot on the tube sockets. I notice that with age the flux deposits get considerably darker. I always clean off the flux deposits as you do with alcohol, and I just feel safer with less of a possibility of arcing.
I know with burnt resisters which can also burn the circuit boards, it is imperative to cut all the carbonized sections off or else the traces will most definitely arc again in the future. You know what they say: an ounce of prevention....
Nope, at least not at that point. I have an MV75 and a PV5 that have just as "dirty" boards.
I guess I'm spoiled because ARC boards are super clean. Also I occasionaly used the flux removal system at work to clean my boards.
Some solvents will attack the film caps, but there are safe alternatives.
CJ probably did not want to deal with it.
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