I have a speaker that runs off of AC (there is a switching converter within the speaker) I'm attempting to convert it to battery power, From my understanding the speaker runs off of 5V (someone else did a similar conversion). so here goes
- Where would I solder a wire to run directly from DC. I'm assuming it would be after the switching mode power supply. Also I know that there is some conditioning going on there, so I'm not sure the implications of bypassing it.
Attached are photos of the unit
enter image description here
I measured the voltage across the two capacitors (as venny suggested) and found that the voltage was 20V. Then I connected a 20v rechargeable battery across that capacitor and was able to operate the speaker from battery power.