This acts similarly to electrical contact cleaner which is a chemical mixture that is used to remove and prevent build up of unwanted substances on conductive surfaces.
Cleaning electrical contacts isopropyl alcohol.
Isopropyl alcohol and even brake cleaner can be used but can cause the plastic to become brittle which is more of a factor in 25yr.
Electrical contact cleaner is simply compressed air with a cleaning agent that evaporates such as isopropyl alcohol.
Make sure that the item is unplugged before you start cleaning it.
Greasy contaminants might be an issue such as laser printer and inkjet electrical contacts.
It can dislodge foreign elements and clean components.
If it is dab it off on a paper.
Isopropyl alcohol 99 is ideal for industrial and consumer cleaning of electronics because its fast evaporation ensures that it will dry spot free.
This video shows the comparative evaporation rate of 99 8 pure ipa 70 ipa and acetone.
About the only time you need an abrasive of any kind is when there is corrosion to the point of sluffing of metal and pitting.
Ipa 99 is also completely miscible in water which is efficient when cleaning consumer products that may require a water and ipa 99 mixture such as laptop computers.
Where water droplets would cause problems isopropyl quickly evaporates and can be used to dry water residues.
Make sure that the brush is not dripping with the solution.
It is useful for cleaning electric components that have food grease or oils on them.
Then take the part of the brush that you dipped into your solution and insert it into the electrical contact slot or wipe the brush across the surface of the contact if it is exposed.
Instead of using an electrical contact cleaner one could consider using a distilled water and isopropyl alcohol mixture at a 1 1 ratio.
For 90 just change the ratio to 1 1 25 isopropyl to distilled water and distilled water do not use tap water since it could leave mineral water stains works wonders at removing oily smudges without a streak in 2 3 swipes.
That is one of the reasons 70 pure isopropyl alcohol is commonly used for degreasing and smt stencil cleaning.
But for screens the fast evaporating combination of rubbing alcohol available in both 70 and 90 strength.
In the case of electrical contact cleaning the faster evaporation helps ensure the flammable solvent is gone before energizing the equipment.
Insert the brush into the contact or wipe it off.
