Macbook Pro 15" Mid 2010 No Power

[crdz66]

Hello Friends.

I have a problem with a Macbook pro with no power at all.

This unit don't have a orange and green light indicator on magsafe power supply connector.
I check the voltage on charger and that give me 16.xx volts and the same on the pins back power jack.
There is a fuse or capacitor (i don't which one is) and one side give me 16.xxvolts but 0 on the another one.
The continuity and ohms reading is unstable.

Any Ideas??

[Mario]

Re: Macbook Pro 15" Mid 2010 No Power

Might be graphics chip. Try a reflow or reball.

[ktmmotocross]

Re: Macbook Pro 15" Mid 2010 No Power

Might be graphics chip. Try a reflow or reball.

what have graphics chip with charger?

[crdz66]

Re: Macbook Pro 15" Mid 2010 No Power

OK. Going to try reflow because can't do the reball
Thanks

[ktmmotocross]

Re: Macbook Pro 15" Mid 2010 No Power

fck reflow. Dont try every stupid advice

[dellxps15]

Re: Macbook Pro 15" Mid 2010 No Power

no green/orange light when 16volt are present:

1) no g3hot 3.42 volt
2) bad magsafe board
3) bad u7000 chip (short something)

[ktmmotocross]

Re: Macbook Pro 15" Mid 2010 No Power

i have too problem with geohot 3.42V, fuse in front of it was broke, so try to measure it


and NEVER reflow if u really dont know the problem. GPU, NB or SB just heat up to 100c. if ic is good it will work

[dellxps15]

Re: Macbook Pro 15" Mid 2010 No Power

i have too problem with geohot 3.42V, fuse in front of it was broke, so try to measure it


and NEVER reflow if u really dont know the problem. GPU, NB or SB just heat up to 100c. if ic is good it will work

3.42 line doesnt have a fuse. probably it's a 47omh 0805 resistor.

if it blow there's a short on the 3.42 volt rail

[ktmmotocross]

Re: Macbook Pro 15" Mid 2010 No Power

yes u have right it was resistor. it blown because of aluminium covet touch some capacitor on 3.42V line

[crdz66]

Re: Macbook Pro 15" Mid 2010 No Power

Update.

Finally I find the problem with why the power light is not turn on.
Somebody open this laptop before and the connector between the power jack board and logic board was bend. Means the 5 pins connector (female) was bend on logic board. 2 legs make good contact only.
But, Still the laptop doesn't turn on.
My concern is If I have the right power supply.
I'm used a 16.5v 3.65a 60w.

This is from website:
Product Features
Device Supported: Notebook
Input Voltage: 110 V AC, 220 V AC
Output Voltage: 18.5 V DC
Maximum Output Power: 85 W
Maximum Output Current: 4.60 A
Compatibility: Apple MacBook Pro Notebooks:
A1172 A1221 A1222 A1226 A1290 A1260 A1229 A1150 A1286 661-3994 ADP-90UB

So, What fo you think guys.
I'm used the wrong one.???
Thanks

[crdz66]

Re: Macbook Pro 15" Mid 2010 No Power

Update.
I don't know how but after couple minutes this laptop start working.
Was the reflow?
Start with grey colors and after turn off and turn on, now is working.

Thanks to everybody.