I'm not sure if this is the right place for this. If not please move or delete. I have an old Luxman R-3045 I received a long time ago. When I received it the power IC's had apparently been blown and replaced at one time. The board is Bakelite and the burnt smell is that I really can't use it. It works very well as I have fired it up a few times and the sound is excellent. Now I cleaned everything with 99.9% alcohol with a scrub brush where I could reach and got the rest with a stiff bristle paint brush. and did it twice about a week apart with no noticeable difference. Does any one have a better solution to get the smell out of the board? Mike
Bakelite or Paxolin? Paxolin does have a unique kind of smell when it gets hot but I can't recall it permanently lingering.
All I can think of would be to coat it (liberally) on both sides with a conformal coating. If the board is actually charred then it might be a different story though.
All I can think of would be to coat it (liberally) on both sides with a conformal coating. If the board is actually charred then it might be a different story though.
Assuming you have a garage you could put it one the floor well away from anything flammable and just leave it on all day (for a few days, but not completely unattended in case something goes wrong - so no overnite) and see if the smell bakes out over some time.
I don't care much for the smell of hot bakelite either, it's possible you just need to move this unit along at some point.
I don't care much for the smell of hot bakelite either, it's possible you just need to move this unit along at some point.
Hello Mooly
It may be Paxolin but as I seems to be parament I have left it out in the sun all day for a couple of days didn't seem to help or hurt. I'm not a picky person I could probably get by if I had to stand over it 6" from my nose but from the living room to the kitchen about 20' away it's fairly brite.
It may be Paxolin but as I seems to be parament I have left it out in the sun all day for a couple of days didn't seem to help or hurt. I'm not a picky person I could probably get by if I had to stand over it 6" from my nose but from the living room to the kitchen about 20' away it's fairly brite.
I've no idea tbh. Burnups on boards was a regular thing years ago in TV's and the like but I (and we as a service dept) never had any come backs because of lingering smells.
Could something else have got in there? We did see lots of spillage cases (and pet wee) and that was always bad news.
I can't be 100% sure there were any spills in the past but with close inspection of all the boards there are no stains burn marks or anything else They look perfectly new. as I really cleaned them. Could it be possible that the caps have been leaking and saturating the boards over the years, It has never been recapped tough I visibly checked all components before cleaning. Any Ideas of what I can safely soak it in to leach out the smell? Here is a thought it's a little unorthodox but if there were something that could leach but you would have to be careful of the components on the boards, set each board separately in just enough of the solution only to keep the bottom damp but avoid getting anything on top wet. I could be over thinking this as I am a retired Mechanical Engineer but only know just enough about Electronics to be a little less than dangerous.
I would doubt a normal cap has leaked tbh and I don't think you would get a persistent lasting smell from that. Having said that the exception would be the old 'RIFA' mains filter caps that used to go up in smoke and absolutely stink. Those are a special case and they are always found directly across the incoming mains or across the mains switch. Often just removed and left out if they fail.
You can wash boards although I would caution against wetting parts such as adjustable RF tuned circuits and the like. Boards with caps, resistors, transistors and IC's are just fine to dunk though and I've washed countless PCB's over the years including from TV's and VCR's and the like.
https://www.diyaudio.com/community/threads/washing-an-amplifier-board.301813/post-4942703
You can wash boards although I would caution against wetting parts such as adjustable RF tuned circuits and the like. Boards with caps, resistors, transistors and IC's are just fine to dunk though and I've washed countless PCB's over the years including from TV's and VCR's and the like.
https://www.diyaudio.com/community/threads/washing-an-amplifier-board.301813/post-4942703
