Look for bulging tops or leaking fluid on the electrolytic caps.
: Labeling specific resistors, capacitors, and ICs (Integrated Circuits) with their rated values and placement points. bm5291 ver 13 schematic free
These thin wires connect to the positive terminal of every cell in the series string (B1 to B13) to monitor individual voltages. Common Components to Look For Look for bulging tops or leaking fluid on