I’m repairing a friend’s Korg C46 piano. The main circuit board (KLM-1653) has some clearly failed electrolytic capacitors. They’re surface mount, most of them are 10 (nanofarads, I’m guessing), some are 47. All the obviously failed ones are 10s. Failures are identified by the oozed brown goop on the PCB.
How would I find replacement capacitors for this board?
Usually capacitor values are implied to be microfarads. Of course that isn’t always the case but for an electrolytic it’s probably 10 microfarads since electrolytics tend to go as low as about 0.1 microfarads. You can find capacitors like that from electronics parts distributors like Digikey or Mouser. You will need to determine the voltage rating of the capcitors too. The replacement capacitors must have an equal or greater voltage rating (usually best not to go too high over for capacitor longevity). One last thing to check is whether they are polar or bipolar, if they have a black stripe on one side then they’re polar. I assume they are polar.