Theres a clear soft & very sticky silicon sealant type goo on Sanken type power amplifiers.
I wanted to get the Silver wires off them to save them up.
I found that boiling them in Turpentine for a while, then letting them dry out, the previously near unchanged goo decided to dry out into a fraction of its size, go crumbly and i could chip/brush/pick it off the board & the wires.
Turned out for a couple of hours work, i got 68 cents worth of Silver...
But, well i dont think those boards are High grade & productive to work on, try boiling the 'pot' ( electrical trade term, short for 'potting' a circuit board, potted circuitboard in Turps & see if it dissolves at all.
Or, once dried out afterwards, see what it does.
I think some 'pottage' has got glassfibre in it.
The first example of potting that i found was a red silicon rubber sort, on Xerox photocopiers.
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