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how to remove epoxy from older ford ignition modules? Answered

i would like to attempt a repair of module electronics. However epoxy is covering the board on 80's style module box


The epoxy is there to hold the components rigidly in place and any physical attempt to remove it will most likely cause more damage to the board and components than to the epoxy. 
However, if you're serious about doing this, a chemical called Dimethylformamide will slowly soften the epoxy and cause it to flake away (according to THIS report).  This is an extremely unpleasant substance and all recommended precautions should be taken if you use it.

(The chemical may also dissolve parts of the components such as plastic coatings and connectors, capacitor plugs, insulating pads etc.)