Boss DS-1 MIJ 1983 PSA Mod/Repair/Maintenance Check indicator flashing/Pedal Demo

[@RockLightWater]

Good job you did! DS-1 is still a great pedal. I wanted to to the APA->PSA conversion on my 1980 MIJ, but the board is different enough so r38 is not same position as your. Worse, the silk does not show resistors numbers. My board is a 052-286E, unlike yours.hints on finding the resistor?

[@Pedalheadshow]

If you look boss Ds-1 service notes you’ll find the schematic and an outlined diagram of the circuit board

[@RockLightWater]

@Pedalheadshow thanks, indeed I found it. In fact, it was located in the same place, but for some reason, I wanted to trace the signal and used input 11 instead of 10. That did nit made sense, thus the question.

[@ernestowyman]

"PromoSM"