Hi have a Yamaha bb1025 with an intermittent fault, occasionally when the tone pot is adjusted output is drastically reduced then by turning the tone pot it comes back. Please excuse the ignorance is this just a matter of sourcing a pot and if so is it a suitable time to upgrade I have seen some discussion re changing from 250 to 500 pots.
My soldering skills are good so would anticipate tackling this myself
Thanks in advance