macbook Pro 2011 15" A1286 won't power on without battery

[joelz]

Hi, i just got this macbook, its wont power on without battery,
because i have no battery inside.

tried other battery, and it works, laptop charges, and start up normally, but if i remove battery, it will not work, i have 85W Power supply,

what can i do?

i cant do any resets..
Its macbook Pro 2011 15" A1286

[dellxps15]

Re: macbook Pro 2011 15" A1286 won't power on without battery

post mainboard code: 820-xxxx. if it works on battery should be easy to fix.

[nabilgo]

Re: macbook Pro 2011 15" A1286 won't power on without battery

can you dump bios for me plz

[cvorke]

Re: macbook Pro 2011 15" A1286 won't power on without battery

Same problem here...
Motherboard 820-2915, won't power on without battery.
If I connect battery and power it on, I can remove batt and it will remain on if connected to DC, but it won't start only on DC.
It can powers on only on battery normaly.
Looks like common problem because I have two mobos with same issue.
Already changed U7000, but same problem persist.

[inflex]

Re: macbook Pro 2011 15" A1286 won't power on without battery

Do you get a green light on the magsafe?

[cvorke]

Re: macbook Pro 2011 15" A1286 won't power on without battery

Do you get a green light on the magsafe?

I have green/orange light. Everything works fine, except power on without battery.
I've just tested with ASD and it passed without any error.
Very confused about this...

[inflex]

Re: macbook Pro 2011 15" A1286 won't power on without battery

Really can be a multitude of causes for this sort of fault; hopefully nothing involving the SMC.

Do you have the boardview & schem ( I don't have that one in my small collection )?

[cvorke]

Re: macbook Pro 2011 15" A1286 won't power on without battery

Problem was with DC adapter, works fine with new one...