Maker Pro
Maker Pro

Sonos play 5

Thanks Harald, I saw that while searching.
This seems to be a 3 or more layer board and it’s almost impossible to trace what’s connected to where.
While lit from the underside, I can only see the mains isolation gap.
This unit has been played with before and quite a few trace pads have been destroyed and are non existent. I can rub the solder mask away but since there are several layers, it’s a guessing game without a schematic.
Thank you anyway.

Martin
 
We understand your predicament.
Multilayer boards without a schematic are next to impossible to trace. The next mystery is usually identifying components.

I miss the '70s when manufacturers would use through hole discrete components, and often a schematic printed on the back cover.

Good luck. (Your going to need it)
 
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