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Current version by: crea ,

Title:

MacBook Air 11" (Mid 2011) 820-3024 Runs off charger but wont charge

Text:

Hi, iv got a MacBook Air 11" (Mid 2011) 820-3024 which will run fine on the charger, but when the charger is unplugged it turns off.
 
Iv tried 2x different chargers and 2x different dc in boards and it still wont charge. The battery has been changed and when it had charge in it the mac would run fine off the battery alone, until it went flat, then wont charge again.
 
The mac reports that the battery is at 0% and to replace it now, even though it has been replaced twice already with the same result.
 
I have replaced ISL6259 also and still have the same problem.
 
Im testing PPDCIN_S5_CHGR on Q7080 and am getting 14.5 volts but it should be 18.5v according to the schematic.
 
The board has had some water damage at one point, but this seems to be only on the dc in board, the rest of the motherboard appears to be fine.
 
If I measure resistance to ground on that line I get 040.0kohm , but without another board to compare to that is meaningless.
 
All we know what is happening so far is the voltage isnt what it should be on that line, so il see if I can find any filters or something on that line.
 
Iv tried two charger and two dc in boards and get that same 14.5-14.8volts at the dc in board connector.
 
Here are some voltages from around ISL6250 :
 
CHGR_CSI_P
 
14.50v
 
CHGR_CSI_N
 
14.45v
 
CHGR_BOOT
 
12.89v
 
CHGR_UGATE
 
10.95
 
PP5V1_CHGR_VDDP
 
5.05v
 
CHGR_CSO_N
 
8.36v
 
CHGR_CSO_P
 
8.36v
 
SMC_BC_ACOK
 
2.97v
 
CHGR_RST_L
 
3.3v
 
CHGR_VNEG_R
 
1.3v
 
CHGR_VCOMP_R
 
1.3v
 
CHGR_DCIN
 
14.2v
 
CHGR_ACIN
 
3.74v
 
CHGR_ICOMP
 
1.54v
 
CHGR_CELL
 
0v
 
CHGR_VCOMP
 
1.52v
 
CHGR_VCOMP_R
1.44v
1.44v
1.44v
1.44v
 
PP3V42_G3H
3.39v
3.39v

tested :
R5420 = good
R7085 = 0.469M
R7080 = good
R7081 = good
R7005 = good

Voltage @ R7005 = 14.1v & 14.35v
Voltage @ R7080 = 14.69v & 5.57v
Voltage @ R7001 = 5.1v & 5.05v
Voltage @ R7085 = 14.62v & 5.7v
Voltage @ R5420 = 0.061v & 0.061v
3.39v
3.39v

tested :
R5420 = good
R7085 = 0.469M
R7080 = good
R7081 = good
R7005 = good

Voltage @ R7005 = 14.1v & 14.35v
Voltage @ R7080 = 14.69v & 5.57v
Voltage @ R7001 = 5.1v & 5.05v
Voltage @ R7085 = 14.62v & 5.7v
Voltage @ R5420 = 0.061v & 0.061v

Device:

MacBook Air 13" Mid 2011

Status:

open

Edit by: crea ,

Title:

MacBook Air 11" (Mid 2011) 820-3024 Runs off charger but wont charge

Text:

Hi, iv got a MacBook Air 11" (Mid 2011) 820-3024 which will run fine on the charger, but when the charger is unplugged it turns off.
 
Iv tried 2x different chargers and 2x different dc in boards and it still wont charge. The battery has been changed and when it had charge in it the mac would run fine off the battery alone, until it went flat, then wont charge again.
 
The mac reports that the battery is at 0% and to replace it now, even though it has been replaced twice already with the same result.
 
I have replaced ISL6259 also and still have the same problem.
 
Im testing PPDCIN_S5_CHGR on Q7080 and am getting 14.5 volts but it should be 18.5v according to the schematic.
 
The board has had some water damage at one point, but this seems to be only on the dc in board, the rest of the motherboard appears to be fine.
 
If I measure resistance to ground on that line I get 040.0kohm , but without another board to compare to that is meaningless.
 
All we know what is happening so far is the voltage isnt what it should be on that line, so il see if I can find any filters or something on that line.
 
Iv tried two charger and two dc in boards and get that same 14.5-14.8volts at the dc in board connector.
Iv tried two charger and two dc in boards and get that same 14.5-14.8volts at the dc in board connector.
 
Here are some voltages from around ISL6250 :
 
CHGR_CSI_P
14.50v
 
CHGR_CSI_N
14.45v
 
CHGR_BOOT
12.89v
 
CHGR_UGATE
10.95
 
PP5V1_CHGR_VDDP
5.05v
 
CHGR_CSO_N
8.36v
 
CHGR_CSO_P
8.36v
 
SMC_BC_ACOK
2.97v
 
CHGR_RST_L
3.3v
 
CHGR_VNEG_R
1.3v
 
CHGR_VCOMP_R
1.3v
 
CHGR_DCIN
14.2v
 
CHGR_ACIN
3.74v
 
CHGR_ICOMP
1.54v
 
CHGR_CELL
0v
 
CHGR_VCOMP
1.52v
 
CHGR_VCOMP_R
1.44v

PP3V42_G3H
3.39v
1.44v

PP3V42_G3H
3.39v

Device:

MacBook Air 13" Mid 2011

Status:

open

Edit by: crea ,

Title:

MacBook Air 11" (Mid 2011) 820-3024 Runs off charger but wont charge

Text:

Hi, iv got a MacBook Air 11" (Mid 2011) 820-3024 which will run fine on the charger, but when the charger is unplugged it turns off.
 
Iv tried 2x different chargers and 2x different dc in boards and it still wont charge. The battery has been changed and when it had charge in it the mac would run fine off the battery alone, until it went flat, then wont charge again.
 
The mac reports that the battery is at 0% and to replace it now, even though it has been replaced twice already with the same result.
 
I have replaced ISL6259 also and still have the same problem.
 
Im testing PPDCIN_S5_CHGR on Q7080 and am getting 14.5 volts but it should be 18.5v according to the schematic.
 
The board has had some water damage at one point, but this seems to be only on the dc in board, the rest of the motherboard appears to be fine.
 
If I measure resistance to ground on that line I get 040.0kohm , but without another board to compare to that is meaningless.
 
All we know what is happening so far is the voltage isnt what it should be on that line, so il see if I can find any filters or something on that line.
 
Iv tried two charger and two dc in boards and get that same 14.5-14.8volts at the dc in board connector.

Here are some voltages from around ISL6250 :

CHGR_CSI_P
14.50v

CHGR_CSI_N
14.45v

CHGR_BOOT
12.89v

CHGR_UGATE
10.95

PP5V1_CHGR_VDDP
5.05v

CHGR_CSO_N
8.36v

CHGR_CSO_P
8.36v

SMC_BC_ACOK
2.97v

CHGR_RST_L
3.3v

CHGR_VNEG_R
1.3v

CHGR_VCOMP_R
1.3v

CHGR_DCIN
14.2v

CHGR_ACIN
3.74v

CHGR_ICOMP
1.54v

CHGR_CELL
0v

CHGR_VCOMP
1.52v

CHGR_VCOMP_R
1.44v
Iv tried two charger and two dc in boards and get that same 14.5-14.8volts at the dc in board connector.

Here are some voltages from around ISL6250 :

CHGR_CSI_P
14.50v

CHGR_CSI_N
14.45v

CHGR_BOOT
12.89v

CHGR_UGATE
10.95

PP5V1_CHGR_VDDP
5.05v

CHGR_CSO_N
8.36v

CHGR_CSO_P
8.36v

SMC_BC_ACOK
2.97v

CHGR_RST_L
3.3v

CHGR_VNEG_R
1.3v

CHGR_VCOMP_R
1.3v

CHGR_DCIN
14.2v

CHGR_ACIN
3.74v

CHGR_ICOMP
1.54v

CHGR_CELL
0v

CHGR_VCOMP
1.52v

CHGR_VCOMP_R
1.44v

Device:

MacBook Air 13" Mid 2011

Status:

open

Original post by: crea ,

Title:

MacBook Air 11" (Mid 2011) 820-3024 Runs off charger but wont charge

Text:

Hi, iv got a MacBook Air 11" (Mid 2011) 820-3024 which will run fine on the charger, but when the charger is unplugged it turns off.

Iv tried 2x different chargers and 2x different dc in boards and it still wont charge. The battery has been changed and when it had charge in it the mac would run fine off the battery alone, until it went flat, then wont charge again.

The mac reports that the battery is at 0% and to replace it now, even though it has been replaced twice already with the same result.

I have replaced  ISL6259 also and still have the same problem.

Im testing PPDCIN_S5_CHGR on Q7080 and am getting 14.5 volts but it should be 18.5v according to the schematic.

The board has had some water damage at one point, but this seems to be only on the dc in board, the rest of the motherboard appears to be fine.

If I measure resistance to ground on that line I get 040.0kohm , but without another board to compare to that is meaningless.

All we know what is happening so far is the voltage isnt what it should be on that line, so il see if I can find any filters or something on that line.

Iv tried two charger and two dc in boards and get that same 14.5-14.8volts at the dc in board connector.

Device:

MacBook Air 13" Mid 2011

Status:

open