Mechanic VC04 burned Component identify.

[Ariu]

Hello, i have a non functional shortkiller Mechanic
VC04 which has 2 faulty components ( burned out).
Can anyone identify these Components?
Thanks.

[ThePhoenix]

Re: Mechanic VC04 burned Component identify.

I've just looked up the components on my board, the component on the top has the marking A09T (https://www.sunrom.com/p/ao3400-a09t-sot-23-n-ch-mosfet) and the second one has VBA1206 (http://vbsemi.cn/index.php?id=7289). Maybe you can help me too, i need the resistor value on R26, its next to the usb-c port.

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

hia,

i know this is an old post but just figured id ask anyways and add a pic of the board.

Mechanic VC04

plus can anyone help with this missing component.. the VC04 works from usb power but not from battery power.

[petehall347]

Re: Mechanic VC04 burned Component identify.

find datasheet for that shorted ic and it should have a circuit diagram so you can get clues as to what it was ,

[R_J]

Re: Mechanic VC04 burned Component identify.

Where did the original part go? looks like someone removed it, some sort of battery protection?
The ic is a Microne ME4057

[petehall347]

Re: Mechanic VC04 burned Component identify.

what is behind here ?

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

what is behind here ?

thats the other side.

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

Where did the original part go? looks like someone removed it, some sort of battery protection?
The ic is a Microne ME4057

i got it as a job lot, so dont know whats happen lol be nice to fix but like i say you can plug in the usb and it works.

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

find datasheet for that shorted ic and it should have a circuit diagram so you can get clues as to what it was ,

i have tryed looking for a circuit diagram for the vc04 but to no joy... so have no idea as to what is missing.

[petehall347]

Re: Mechanic VC04 burned Component identify.

https://datasheetspdf.com/pdf-file/9...crone/ME4057/1
lots of hits on that google .
cant make out what those soldered bits go but maybe solder them properly .

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

thanks petehall347 i did have a look at that datasheet. bit new to this and just learning but the part thats missing has 3 pads top and 2 pads bottom so will have todo a bit of google see if i can find anything.
them soldered bits just link together lol .... god knows

my VC04 board looks totally different to Ariu pic of his board... so im guessing its a copy or a older or newer board.

just looking on the board, cud it be one of them 321

[R_J]

Re: Mechanic VC04 burned Component identify.

My guess is the missing 20t23-5 is something like a RY2201 or XB5353A
Can you trace the pins of the sot23-5 to see where they connect?

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

My guess is the missing 20t23-5 is something like a RY2201 or XB5353A

check this, when i short one of the 2 pads to the middle of the 3 pads it powers up and works LOL

maybe i shud stop befor i mess it totally.... thanks so much R J for the info i will go have a look..

[R_J]

Re: Mechanic VC04 burned Component identify.

Maybe something like a max1551

[CarlNGizmo]

Re: Mechanic VC04 burned Component identify.

R J your prob right mate..... but i dont have a clue LOL

all i know is if it is a Max1551/1555 ive tryed this

pin 4 and pin 5 of where the max1551/55 is ment to be is connected together on my board!
so if i connect one of them..... pin 4 or 5 to pin 2 on my board it works lol and chargers the batts.

so im lost as to whats going on LOL

an thanks so much for tryin to help a noob with his probs,... your a proper star pal,... iam learning n prob shud done that befor buy all the kit! but hay where is the fun in that LOL
in my defence im going to blame my mate vince from youtube and richard from learning electronics also youtube LOL but hay we all got to start somewhere