Boss DS2 power issue

biopahn2049

New member
Hi guys! i just bought an used Boss ds2 but it has an issue in powering. So when i use my power adapter (9v) directly to it, it doesnt work but only works when daisy chain it with my Boss BD2 (which prob much newer version of boss). The only way to make it work singularly is using 9v battery. PLS Help is there anyways to fix this, i even tried the 12v adapter but nothing different, still not works
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on the top it said "use Boss PSA adapter only (9v dc)". It still works like that after i tried the 12v. I only know a bit of soldering but dont know much about what to fix and deeper circuit stuffs.
 

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