Lenovo Ideapad 320-15IKA
NM-B452
Hi guys. I've used the forum a lot but never asked questions before. I had a Lenovo come in that was shorted on the 20V rail. I fixed that and thought my job was done until I realized it wasn't charging the battery. Here is what I've checked so far
On the BQ24780SRUYR charging ic
VCC 20V
SMBUS lines
SDA 3.3V
SCL 3.3V
Current Sensing lines
ACP/ACN 2.3 ohms
SRP/SRN 21.2 ohms
REGEN line 6V
PHASE .84V with no battery installed(this may be normal)
PHASE xxV with battery installed voltage is slightly higher than battery voltage.
Originally the battery was completely drained so I charged it with my DCPS. The machine will work on battery power. When the ac adapter is first plugged in the battery icon in the lower right shows that it is charging and it shows the battery filling up over and over for about 10-20 seconds. Then it stops but still shows that the battery plugged up. I do not get a message saying not charging. Feel free to let me know what I haven't checked. I have not tried a new battery yet because this battery seems okay.
NM-B452
Hi guys. I've used the forum a lot but never asked questions before. I had a Lenovo come in that was shorted on the 20V rail. I fixed that and thought my job was done until I realized it wasn't charging the battery. Here is what I've checked so far
On the BQ24780SRUYR charging ic
VCC 20V
SMBUS lines
SDA 3.3V
SCL 3.3V
Current Sensing lines
ACP/ACN 2.3 ohms
SRP/SRN 21.2 ohms
REGEN line 6V
PHASE .84V with no battery installed(this may be normal)
PHASE xxV with battery installed voltage is slightly higher than battery voltage.
Originally the battery was completely drained so I charged it with my DCPS. The machine will work on battery power. When the ac adapter is first plugged in the battery icon in the lower right shows that it is charging and it shows the battery filling up over and over for about 10-20 seconds. Then it stops but still shows that the battery plugged up. I do not get a message saying not charging. Feel free to let me know what I haven't checked. I have not tried a new battery yet because this battery seems okay.
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