Hello.
I accidently used wrong power supply on my Yamaha keyboard - it has the same voltage (12V) but reversed polarity. They Keyboard did not turned on. After I changed to the correct power suply unit and did a quick check it seems to work but I wonder if the damage can be more subtle and should I do some very thorough testings? Or if there were no safety circuts to prevent damage from potential reverse polarity the keyboard would not turn on at all after the accident?
I accidently used wrong power supply on my Yamaha keyboard - it has the same voltage (12V) but reversed polarity. They Keyboard did not turned on. After I changed to the correct power suply unit and did a quick check it seems to work but I wonder if the damage can be more subtle and should I do some very thorough testings? Or if there were no safety circuts to prevent damage from potential reverse polarity the keyboard would not turn on at all after the accident?