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Korg M1 serial 000821 circuit board YAMAHA LC 35310 keyboard key resistor value

Hi and thanks for any help.
i am looking for the value of a 1/8 watt resistor too small to read the color bands, it is located on the plastic keys keyboard circuit board which is marked YAMAHA 35310  19EHB.
I couldn't find this board in the korg manuals maybe cause they used a YAMAHA board, there are 60 of these each one located on the end of each key.
I tried to measure resistance and got many readings close to 150ohms and i replaced the 2 decayed ones but this only advanced the silent key to the next one in line.
I guess i bought the wrong value resistor.
Please help, thanks!