Re: HP8657B Mains Filter Disaster
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Hi Nigel
As you are in the UK and have access to Toolstation a very useful solvent for many purposes is their PVCu Solvent Cleaner. ?Its great for removing all sorts of unwanted residues and is does not affect many plastics but as usual check first.
New UK sourced filtered IEC sockets should have now have ?had the AC ratting of the filter capacitors raised from 250VAC to 275VAC. ?There is a worse smell fortunately rarely encountered any more and that is of a failed Selenium Bridge Rectifier.
73 George G6HIG ? ?
On Wednesday, April 3, 2019 11:34 AM, NigelP <nigel-pritchard@...> wrote:
Thanks for all the comments. I¡¯ve actually ordered a new one from Digikey UK; bizarrely it¡¯s coming from the USA even though it¡¯s made in Switzerland and ordered from a? UK company!!!!
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They had the best price but I had to order something else as well to get to the ship-free price L. I ordered a big fan to sit on the bench to suck away solder smoke ¡.. and the
burned-out filter remnants. You just can¡¯t remove that junk, it seems to be permanently stuck to whatever it oozes out on to; tried all sorts of solvents to no avail and the house still stinks of it! Could try petrol I suppose.
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I did attempt to try to use the unit post burn-out by peeling off the earth screen but the actual filter is fully potted and you can¡¯t physically or electrically separate it from the rest of the circuitry so no choice but to replace the whole thing before
you can get your generator operating again L.
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Regards
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Nigel G8AYM
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