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Old 16th February 2014 | Show parent
Gear Addict
Originally Posted by Psychlist1972 ➡️
Cool research. Looking forward to the details. Thanks for sharing your results so far.

Regarding "blacked out" do you mean just the normal solder mask? If so, there's nothing nefarious with that, it's SOP for modern PCBs as it keeps solder to the pads and helps prevent bridging and corrosion.

Also, I wouldn't be surprised if, given the density of the circuit there, this is a 4 layer board. They'd want to avoid that to say cheap, but there's a lot going on on that board.

it looks like just a 2 sided board to me. theres lots of "pass thru" holes but i dont see any evidence of there being more layers in the middle, at least not from following the circuit. But there is certainly a lot going on there in a very small space!

The MFB-522 main board for instance is surface-mounted but the board pcb tracks arent "blacked out"...you can see where tracks are going clearly. With the Volca Beats it was more of a blind hunt but with a sense of direction from my background knowledge of circuits. Got there in the end. Different manufacturing i guess.

Its probably not a vexious move on Korgs part youre probably right, i mean they were kind enough to make nice big pads on there to solder to easily to add some separate outs and even label them so they obviously dont mind users hunting around in the box and looking at the PCB. MAybe they want you to go so far, but not further hehe