StudentSA
Member
Good Day,
I have a old circuit that was probably build in the 1980`s that splits an stereo audio input in to 5 frequency band components that them drives a LED equalizer display.
The circuit was powered using a 7812 and a 7912 to attain +-12 V. I believe that the circuit was damaged by either and over voltage supply or a reverse voltage supply at some time. I am currently separating and testing the different sections of the circuit.
Ive narrowed the problem down to a single circuit board, where the positive and ground rail are shorted... this board contains 4 LM324 IC`s and lots of resistors and capacitors.
What component is most likely to malfunction as a short?
Regards,
StudentSA
I have a old circuit that was probably build in the 1980`s that splits an stereo audio input in to 5 frequency band components that them drives a LED equalizer display.
The circuit was powered using a 7812 and a 7912 to attain +-12 V. I believe that the circuit was damaged by either and over voltage supply or a reverse voltage supply at some time. I am currently separating and testing the different sections of the circuit.
Ive narrowed the problem down to a single circuit board, where the positive and ground rail are shorted... this board contains 4 LM324 IC`s and lots of resistors and capacitors.
What component is most likely to malfunction as a short?
Regards,
StudentSA