jared101
Member
Last Activity: 04-26-2023, 08:45 PM
Joined: 03-22-2019
Location: Mississippi
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DAY22AMB6E0 Rev:E boardview
Im trying to find a board view for this HP pavilion. Board number is in the title. -
Re: Ideapd 5 15ITL05 wont charge battery
I just fixed a Lenovo with the same symptoms as yours. It was a bad DCIN mosfet causing the issue... -
Re: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
Digikey for the win.Leave a comment:
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Re: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
Thanks for helping. You were spot on....Leave a comment:
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Re: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
Definitely over my head. I think that reply he gave came from the data sheet too. I tried locating that part at [url]www.ti.com[/url] but did not see it the first time. I’ll check again laterRe: Lenovo Ideapad 320-15IKANM-B452 ...ck again laterRe: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
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Re: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
I did read that but I just wanted to ask. I’m still new to some of this. Now to locate a replacement that won’t take a month to get here.Leave a comment:
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Re: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
Hi piernov. I just reread through your sticky on charging circuits. When i think short I think short to ground. Sorry for the noob mistake. PQ311 is definitely bad
PQ311
0 ohm between Drain and source
170 ohm between Drain and gate
170 ohm between gate and source
PQ312
9Mohm between drain and source
OL between drain and gate
OL between source and gate.
I’m not sure if PQ312 is okay or not. After I have replaced PQ311 what V should I see...Leave a comment:
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Re: Lenovo Ideapad 320-15IKA NM-B452 not charging battery
No shorts on DCIN fets
No shorts on DCIN fets
ACDRV 20.3V. BATDRV Same as battery V
ACOK 3.27v BATSRC Same as battery V
ACDET 2.9v TB_STAT .785v
HIDRV Same as battery V BATPRES .298v
LODRV 0v PROCHOT .3mV
BTST 6.85v PMON 10mV
ILIM .79V IDCHG .398v
CMPIN .276v IADP 26V
CMPOUT .520v CMSRC 20VLeave a comment:
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Lenovo Ideapad 320-15IKA NM-B452 not charging battery
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)
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Re: New Members - please post your introductions here
I'm not exactly a new member. This forum has been extremely helpful to me and I thought I may as well say hello. I have been repairing electronics (mostly phones) for about 8 years. For the last 3 years or so I have been repairing circuit boards for a variety of devices. I work from home and contract with repair shops for any repairs they are not set up for. I just wanted to say thanks to all the people that share their knowledge.Leave a comment:
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