hello,
i have this problem with a broken guitar pedal, no schematic.
i removed a capacitor which was causing the battery to drain. when i plug in the jack lead it drains the battery again. i also, have a flip flop that activates the pedal. i put a momentary switch in place as the old was broken. the light goes off when pressed but comes back on when not pressed. i dont know what to test, how to test or what to look for. i have a basic volt meter which does diode testing as well. if i were to test a chip, what is the best way and what would i be looking for. i imagine removing the chip is best, but then do i have to make another circuit specifically to test that chip?
the chips on the board are
tc401 3bp d type dual flip flop
5222 8701 serial dac voltag output
555d not sure if this is a timer, i dont know what the d is for. i think that is provides a clock for the flip flop
mn3007 bbd delay chip, this one is sat in a socket
m5218l low noise op amp, there are five of these
can these be tested in circuit?
i have this problem with a broken guitar pedal, no schematic.
i removed a capacitor which was causing the battery to drain. when i plug in the jack lead it drains the battery again. i also, have a flip flop that activates the pedal. i put a momentary switch in place as the old was broken. the light goes off when pressed but comes back on when not pressed. i dont know what to test, how to test or what to look for. i have a basic volt meter which does diode testing as well. if i were to test a chip, what is the best way and what would i be looking for. i imagine removing the chip is best, but then do i have to make another circuit specifically to test that chip?
the chips on the board are
tc401 3bp d type dual flip flop
5222 8701 serial dac voltag output
555d not sure if this is a timer, i dont know what the d is for. i think that is provides a clock for the flip flop
mn3007 bbd delay chip, this one is sat in a socket
m5218l low noise op amp, there are five of these
can these be tested in circuit?