About after 5 min charging don't charge anymore and shut down the laptop. with another battery the problem goes about 30 min. without battery the laptop stay always on without problem. i tested PQ52 its ok and PR235 19v OK.
thanks
thanks
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Re: g72-120ev charging battery problem
Try to replace the thermal paste and thermal pad, but use the high quality only.
Don't put the battery, could be bad. -
Re: g72-120ev charging battery problem
Thanks for the reply i checked the temp are ok not have problem with this , with another functionally battery charge 70% and stop charging and the laptop work until the battery ends.Comment
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Re: g72-120ev charging battery problem
Have you tested with another power supply?
I have to mention that I had similar issue with an HP and did a reflow at the charging circuit area that fixed the problem.Comment
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Re: g72-120ev charging battery problem
Yes a tested it with another charger and reflowed the PU6 but the same problem charge 10 minutes and stop charging . but stay on until the battery ends. also i flashed the bios from windowsLast edited by gcomputers; 05-13-2015, 05:14 AM.Comment
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Re: g72-120ev charging battery problem
I'm just thinking, it seems like the charging circuit might not be sensing the current or voltage correctly. Either that, or maybe PU6 is bad.
I'd check some of the FETs in the charging circuitry, like PQ55, PQ3, and PQ4.
What voltage is on the "BATCHG" when charging, and not charging?
Also, what voltage do you measure across PR228 when it is actually charging the battery? PR228 appears to be for monitoring how much current is going into the DC-DC converter for the battery charging.
(For future reference, the battery charging circuitry is on page 39)Muh-soggy-kneeComment
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Re: g72-120ev charging battery problem
thanks for reply ben7 and sorry for late reply.
i measure
PR228=28v thats come from PQ58 i think is normal
PQ3:
D=19v SG=0700
PQ4:
DSG=0700 without battery
PQ3:
D=19v SG=12v
PQ4:
D=12v SG=0 with battery in charging
sometime charging 3 min sometime more 3 and sometime some seconds.
everything i measure with functional battery.
what do u think?Comment
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Re: g72-120ev charging battery problem
For me this happen to an acer netbook with the excact same problem and if you beleive it or not it was a faulty ram!Comment
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Re: g72-120ev charging battery problem
really ... i will tryComment
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Re: g72-120ev charging battery problem
Erat i try the ram is the same problem.
i think is PQ4 defectiveComment
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Re: g72-120ev charging battery problem
Any help pleaseComment
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Re: g72-120ev charging battery problem
I worked on a G72 with the problem: when switched on, it switch off right away and no charging. I found out, that the system is very critical with the smart ID (middle pin) voltage. I changed the middle pin resistor to higher on the plug and the charging problem was solved.Comment
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Re: g72-120ev charging battery problem
thanks for the reply the laptop stay on and work perfect without battery but charge the battery 3 minuts or more and stop charging , anyway a make a test with the middle pin resistor But on the board or the middle pin on power supply?Comment
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Re: g72-120ev charging battery problem
In the schematics, Smart ID goes from page 33(slot9) to page 26 (EC/KBC) and by me it determined wether to charge or not.
https://www.badcaps.net/forum/showthread.php?t=46278Last edited by hansie55; 05-18-2015, 07:17 AM.Comment
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Re: g72-120ev charging battery problem
Here are 2 links to show where I'm coming from. The problem is well known, but there is no solution out there. This is when you have those unexplainable issues.
http://h30434.www3.hp.com/t5/Other-N...r/td-p/1153001
https://www.google.nl/search?q=hp+g7...O8SE7gbn_ID4BwLast edited by hansie55; 05-19-2015, 02:14 AM.Comment
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Hi all
We have in a HP ProBook 445 G8 laptop with AMD Ryzen 7 CPU. When power is connected the power LED light blinks 5 times then stops. Normally HP laptops will blink this LED 10 times as it does a self test when the AC adaptor is inserted. So there must be some sort of short somewhere.
The battery doesn't charge, and is erratic on the MM voltage. Bench PSU LED pulsates when the battery is connected also. So the fault must be on the charging circuit?
I have gone around the board with a MM and cant find anything
Windows shows the battery fine,... -
1. Some theory
1.1. Introduction
Almost every laptop has a charging circuit of some sort, that does a few things:- Manages switching between AC adapter and battery power
- Manages battery charging and generates power rail to charge battery
There are 2 different designs to handle switching between AC adapter and battery power and feeding the system:- Hybrid power boost (HPB) and traditional circuits without power boost (see Warning in HPB section)
- Narrow VDC (NVDC)
Texas instrument has a nice overview of these technologies with some more details at https:... -
since i couldn't find schematic or boardview for this model (LA-K062P), i use closest board model found here https://www.badcaps.net/forum/troubl...-and-boardview
the schematic share same marking for each component, using same PD-Controller, same BQ25710, the only different is the battery cell used. LA-K061P uses 3S battery while LA-K062P use 4S battery per schematic.
what i've done:
- flashing... -
I have this acer V3-472 laptop with board id DA0ZQ0MB6E0 REV:E , With battery charging problem, At first I thought it was a bad battery so, I bought new battery but the problem still the same,cannot turn on with battery only and when battery and charger plugged in no orange light indicator but the laptop is working properly with charger only plugged in. here is the measurement.I noticed when battery and charger both plugged in the voltage on current sense resistor PR1 is fluctuating form 19v go down but when charger only plugged in its working fine here is the measurement of PU1 BQ737 when battery... -
First of all i haven't found the board number other then FLESSY2 G4227A A4227A etched under the DC in connector...
The problem is laptop does not charge the battery...Laptop works on battery and work on charger, but doesn't charge the battery... when off, it pulls 0.13A ,when turned on it pulls around 0.500A and has spikes 0.6-0.8 A when booting, i found that ISL9238H is the charging regulator and i replaced it with ISL 9538H and it's all the same...i checked all the passive components and all seem to be ok...
Anyone have an idea what to look for next? The battery...
Comment