I got a heating pillow (for putting your feet inside it) that does not work.
Picture of the PCB:
And a schematic made by "reverse engineering":
I suspect the regulator (a BT169D) may be broken, but not sure. I plan to bypass it by a 1N4007 (in parallel with it) just to check. Suppose that would not do any harm.
But there is another component on the PCB which I'm not able to identify. It is the one in the schematic marked CBE 5T. I suspect it is some kind of diode, but not sure. Searching on internet gave no result.
Any suggestions what this component might be?
BTW, the values on the resistor in the schematic is based on measuring the resistors without removing them from the PCB.