Velodyne SPL series II

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It's no surprise on these amps that eventually they give out because the PCB,s are exposed to the worst possible vibration possible in audio.
They never seal the amp from the woofer environment but share the same air space, and the amps don't need air movement for cooling.
I have 2 mini 8's that need service.
Looking carefully at the boards you can see nothing burned at all.

Someone out there has a ballpark idea what gives out on these consistently?

So yes a schematic would help.
 
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