JimmyDB;14956482 said:
Since I don't see a lot of value in speculating, I just opened up the MVP20W.
Battery Charger -
TP4056 (1A Charger)
Processor - PIC16F723A (8-bit uController)
I'm still going through everything and writing up a schematic for myself (as best I can without an xray)... I'll post pictures of the boards and ID a few more things later if anyone is interested.
Capt.shay;14956871 said:
You go Boy!
Thanks for doing a tear down and reporting it all. Don't allow yourself to get distracted and please keep reporting what you find. As far as I know you are the first one on the webs to do report a diagnostic and we are all interested in what is in there. Don't be afraid to "dumb it down" for us less techy types.
JimmyDB;14959133 said:
This is where some of the below is from...
Battery: 90mm x 23mm x 6.0mm - 3.7v @ 4AH (times 2
batteries)
Presuming you were serious... here are the pics... which is the start. Clicking on these should open them larger...
Back of the main board... note the Test Points in a row... yeah, they are Vpp, Vss, Vdd, ICSPCLK & ICSPDAT (for programming the PIC)
They removed the marking from a package... looks like ??? MPEN 3428 512 ??? It seems to be something manufactured by SanKen Electric... but they don't like this part number... Hmmmm.
Charging Circuit:
4.7uH inductor is fed from battery voltage, inductor feeds schottky 2A/40V diode
Unknowns...
AL484
4D230L 1274 1442C3
