I have a circuit designed on PCB, and components (resistors, capacitors, diodes, Microcontrollers etc.) are all surface mount. I want to find the total current consumed by this circuit. I have traced the schematic of the circuit completely, and the circuit and MCU operate on 3.3 Vdc. The supply 3.3Vdc is generated through AC 240rms, then half wave rectifier, then filter capacitor and finally 3.3V regulators.
There is also a port left open for the battery but no battery is attached. I want to make circuit portable so that it can work without direct supply that is why I need current consumption of circuit to estimate the battery specifications.
I can't break any connections to measure the current using DMM, because its layered PCB and I am afraid I might damage it.
Is there any other way to find the total load that circuit has or current it consumes??
Note: MCU has the normal operating current of 2.4-5.4 mA.