Hi,
I have a bluetooth Sony portable speaker SRS-XB20 which cannot charge its 2-cell 7.2V Li-ion battery.
The culrpit is probably this chip marked ASV7EA. I think it should boosts (when working!) the 5V USB to 8.3V and charge the battery.
It's probably a Silergy chip, some kind of step-up or battery charger ic.
The ref I have a datasheet for is a SY21282 but some pins don't match with what is populated on the pcb.
Does somebody know what ref is corresponding to the ASVxxx marking?