Re: Lenovo G50-70 - Not powering on

Finally found J5/J6 and both were 0v when plugged into charger.

On battery
PL302 is 14.8v
J6-2.9v
J5-2.9v

Re: Lenovo G50-70 - Not powering on

PJ303
PJ306

Both are showing 0v


Having some difficulty determining where J5/J6 is on the board, but I'll reply once I figure it out.

Re: Lenovo G50-70 - Not powering on

New measurements. Is that normal for them to change so much, or did I ruin something?

PQ301
1-19.6v
2-19.6v
3-19.6v
4-19.6v
5-20.1v
6-20.1v
7-20.1v
8-20.1v

PQ302
1-19.6v
2-19.6v
3-19.6v
4-19.6v
5-0.04v
6-0.04v
7-0.04v
8-0.04v

PQ303
1-0.04v
2-0.04v
3-0.04v
4-3.5v
5-0
6-0
7-0
8-0

PF101
20v both sides

JDCIN1
1-20
2-20
...

Re: Lenovo G50-70 - Not powering on

Well, I was testing the initial request of PL302 & PU301, and I must have done something wrong. Because my initial voltages for PQ301/302/303 are now all significantly different.

PL302 - shows 1.9v

PU301
1-19
2-19
5-0.01
6-2.5
7-0
8-0
9-0
16-5.9
20-19

Will repost the new results for PQ301/302/303 and then the J6/J6 data

Recently acquired this laptop, it did not come with charger so I ordered one. Laptop powered on but it would not charge the battery, continuous blinking charging LED. Laptop would work great as long as it was plugged in. 3 days later it no longer powers on, or responds in any way even if charger is plugged in.

Ordered 2nd new charger\battery, neither seem to help. Device still unresponsive.

Board: ACLU1/ACLU2 UMA NM-A272 Rev1.0
Multi-meter: Extech EX350

I have little skill with the hardware side of troubleshooting or use of a multi-meter but...

Re: New Members - please post your introductions here

Hello! I'm Chuck from Ky, I stumbled across this site while researching my laptop issue and after reading many threads about successful troubleshooting, I'm motivated to learn the ins\outs of device repair from a hardware standpoint.