[TenTec] Slightly off subject

[Stan Gammons]

MEK is a good cleaner.  Freon TF is good, but I don't believe it's 
available anymore.  One of my favorites was a MicroCare product called 
HyperClean. They no longer make it. It may have contained Freon TF. I 
like their current product called SuprClean pretty well.

Anyone tried brake cleaner on a PCB?  It cleans well, but I wonder if it 
would harm the board.


73

Stan
KM4HQE


On 10/20/2017 03:45 PM, Howie WA3MCK wrote:
> Methyl Ethyl Ketone - MEK - beats alcohol hands down... still legal in
> Pennsylvania - use it carefully and sparingly. Ventilate your shop/work
> area...
> Howie WA3MCK
>
> On Fri, Oct 20, 2017 at 16:31 Stuart Rohre <Rohre at arlut.utexas.edu> wrote:
>
>> Ethyl Alcohol will clean up circuit boards safely.  You need to get one
>> of the brushes called "Acid brushes" which have a metal handle holding
>> bristles.  Cut the bristles to only 1/4 inch from the ferrule, straight
>> across, to make the brush stiffer.  Dip brush into alcohol and transfer
>> to board and gradually scrape off the green crud.
>>
>> This may be a sign of someone using acid core solder, or storing circuit
>> board in a damp environment.  On solder side of board, you may try
>> pre-brushing with a brass bristle brush, to loosen the green crud.
>>
>> Good Luck!
>> Stuart Rohre
>> K5KVH
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