Dell Latitude E6430 doesn't recognize adapters

[Andreasbest]

Hello!
When i plugin the genuine Dell adapter it doesn't recognize it and therefore it doesn't charge the battery, it only keeps the laptop power on.
(the charging battery led light up for 1 second and then goes off)
In BIOS i get "unidentified adapter" message, tried other Dell adapters without luck though.
These adapters work like a charm in other E6430 so it seems like i have a ptoblem in PSID circuit (page 44 in attachment schematic).
Tried other Dell E6430 batteries too, no luck.
I also tried other connector (pulled out from a working E6430 but with no luck, also the line seems intact with Ω meter.
Uploaded some motherboard photos from the PSID circuit too.
Any advices welcomed, thank you in advance!

[jasko_jacker]

Re: Dell Latitude E6430 doesn't recognize adapters

Dell use a Small chip stored inside charger that use a 1 wire protocol.
Check the connection on power pin to motherboard, try to reprogramm ec firmware.

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

I checked the connection with another connector (pulled from a full working E6430) no luck.
Also tested the connection between the plug and the motherboard with ohm meter.

[mcplslg123]

Re: Dell Latitude E6430 doesn't recognize adapters

PR13 is 33 Ohms??

[piernov]

Re: Dell Latitude E6430 doesn't recognize adapters

So you mean there's a good connection between the center pin of the connector and the pad on the board? Do you get 3.3V on the PSID pin of the connector?

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

PR13 is 33 Ohms??

Hello and thank you for helping me.Yes the PR13 is 33Ohms.

So you mean there's a good connection between the center pin of the connector and the pad on the board? Do you get 3.3V on the PSID pin of the connector?

On the PSID pin i get 1.73V.

[mcplslg123]

Re: Dell Latitude E6430 doesn't recognize adapters

psid should be 3v

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

psid should be 3v

I know, this is why i'm here asking for your help

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

Can someone advice me in why 3.3v are missing?

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

Can someone help me in why 3.3v are missing?
Thank you

[Techtiger]

Re: Dell Latitude E6430 doesn't recognize adapters

Voltage on PR12 PL4 PR13(both side)

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

PL4 and PR13 have 1.73V on both sides
PR12 has 3.3v on one and 1.73 on the other side.

[mcplslg123]

Re: Dell Latitude E6430 doesn't recognize adapters

PR12-both sides should be 3.3v

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

I know, this is why i'm here asking for your help

[VogonJelc]

Re: Dell Latitude E6430 doesn't recognize adapters

I know, this is why i'm here asking for your help

Did you check diode?pd7? Also pq2 did you check it? Resistance from gate to source?

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

PQ2 gate has no contact with ground at all, therefore no resistance measure at all.
PD7 is missing from board (never soldered)

[mcplslg123]

Re: Dell Latitude E6430 doesn't recognize adapters

What about PU1 pin voltages??

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

pin 1: 1.73
pin 2: 0 (grounded)
pin 3: 0
pin 4: 0.05V (?!)
pin 5: 5v
pin 6: 0 (grounded too)

[mcplslg123]

Re: Dell Latitude E6430 doesn't recognize adapters

I think you mean pin3 is 1.73V and pin1 is 0. Is that correct?? I doubt either pq2 or pq3 is bad.

[Andreasbest]

Re: Dell Latitude E6430 doesn't recognize adapters

yes that's correct, so where can we check after this?