Vintage Synth Repair

That is glue.  Tall parts were generally glued down so their high 
center of gravity wouldn't end up cracking the board or otherwise weaken 
their connection to the traces/pads.

Crow
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synapticdistortion wrote:
>
>
> One thing that I've noticed is that there is a hard, tan-colored
> substance at the bottom of several of the caps.  I can't tell if it's
> leakage, or some sort of thermal material that was placed there during
> manufacturing.  The caps in question otherwise look fine (no bulges or
> splitting).
>
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>