Chosen Solution
I attached a schematic of a circuit I am troubleshooting. In red, I have marked where I should be seeing 1.6V on the negative side of two capacitors, but I am getting 0V. What would cause this to happen? The capacitors themselves are good, the + side is getting the appropriate voltage, but I am not getting the 1.6V on the - side.
thank you in advance for your help!
Hi, Just querying if you’re measuring for AC voltage with a signal injected into the amplifier? They’re both coupling capacitors which allow the AC component of the signal (-ve and +ve going transients) to pass through but not the straight DC. They are directly connected to the R & L, V inputs of U16. Did you measure at pins 3 & 6 on the IC? Are the U16 voltages i.e. VCC1A, VCC1B, VCC2 & VDD, all OK. Here’s the datasheet for the IC.
