[SIZE="3"]I have a problem in hp 8470
Laptop work normal with charger only with out battery
When I shut down and remove charger and but the battery ( work with battery only ) laptop works on an external monitor only (black laptop screen) keyboard and touchpad completely stopped
When I shut down and remove battery and work with charger only laptop work normal
If I work with charger and battery together (black screen ) keyboard and touch stopped
Chang ram, change more than 2 new batt
I need your...
hazim
Senior Member
Last Activity: 01-02-2025, 10:47 AM
Joined: 03-24-2016
Location: asuit
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Re: lenov g50-30 power problem
fault was in
pq 311 n
pq 312 n
pq 302 p
i replace all and laptop power up ok
thanks alot -
Re: lenov g50-30 power problem
thank you so much i will replaceLeave a comment:
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lenov g50-30 power problem
hi
lenovo g50-30 ACLU9-ACLU0NM-A311 MB
ther is a 3 fet short on mb
PQ 303 P-CH
PQ 311 N-CH
PQ 312 N-CH
AND ANOTHER ONE PQ 302 VERY HOT TCP8127 what's the equivalent for tcp8127 fet
finally charger ic BQ737 what's the equivalent if it fault ?
thanks -
NEED Fujitsu ESPRIMO E3721 BIOS
I need bios Desk top i5 fujitsu esprimo e3721 bios
MB : D2942 - B12 GS1 -
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LG flatron w1943se-pf
lg flatron w1943se no power
open case found ic 303 APW7142 burnt
what's its equivalent or how can it was replaced in circuit ??... -
Re: Hp 2000 issue
hi
after more diagnostic and studying schematic
i find d345 bad and ceramic capacitor short near ic u307 by inject volt on charger resistor
i replaced and lap power on
thank you so muchLeave a comment:
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Re: Hp 2000 issue
Q9447 is shorted and i replace it with n-chanel 8444
after that G0 S0 D20
Q9448 shorted again i replace it with n-chanel 8444
all S0 D0 G0
i found Q305 short and its place on mb short also
u302 vcc 0
there is capacitor near u302 vcc capacitor shortLeave a comment:
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Re: Hp 2000 issue
hi i examine mb and checked voltage
Q9447 G20 S20 D20
Q9448 G19.4 S19.7 D20
BQ27728 : U302
1- 0 V
2- 19 V
5- 0.18 V
6- 0V
7-0 V
8- 19.7V
10 - 19.5V
15- 2.7
20- 20 V VCC
Q318 ALL 0 VOLT
Q310 G0 S0 D20V
U307 TPS
PIN
8- 0V
16- 0.0016 VIN
17- 0.5V
18- 0V
D301 0.9 ------1.1 V ADP ID AS I THINK
D305 0--------- 2.7 V
NO SHORT IN FETS ...Leave a comment:
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Hp 2000 issue
hp model : 2000-2d03sx mb : 6050a2498701 a02
no power on power supply ampere 00
fet q9448 bad i replace it
after that volt on charger coil 19 v
on charger resistor 19v
but no 5 - 3 volt at all power system ic 11-fh in schematic tps51123rge
on power system q309 0 volt
q317 19 v on D
q310 0 volt
q318 19 v on D
on battery connect 19 v and 0.5 volt
i need your help...Last edited by hazim; 08-19-2019, 04:00 PM. -
Re: samsung np350vsc problem
SOLVED PROBLEM i re flash bios rom and ec then laptop work very good
i find bios in our forum badcaps
thanks a lotLeave a comment:
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samsung np350vsc problem
[SIZE="4"]i'v samsung np350v5c-a02ae qcla4- la8862p rev 2.0
when i press power lap power on and automatically entering set up
with out pressing any key
a adjust bios setting and rest but still entering set up
when i press f10 and choise booting from hdd
lap entering windows and work will
when i restart i back to problem again
battery volt 3 and lap save date and time
i need your help
[/SIZE]Last edited by hazim; 02-23-2019, 04:05 PM. -
Re: toshiba c850 no power
after i visual inspection this mb i see mini small brunet above mosfet near the coil 5v
i replace it soon
mb power up but no data
i re flash bios - mb is ok
thank you so much my friendsLeave a comment:
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Re: toshiba c850 no power
vreg 3 pin 3 is ok no short
vreg 5 pin 13 is ok no short
install new ic tps 51225c but very very hotLeave a comment:
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Re: toshiba c850 no power
first i want to thank you
this mother board have ic 1225c on board and i see another 2 main board like this mb i see also 1225c on it i'm sure
but in the schematic i see another one tps 51123
this ic on mb is tps 51225c i'm sure
thank youLast edited by hazim; 12-22-2018, 07:13 AM.Leave a comment:
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Re: toshiba c850 no power
first i want to thank you
this mother board have ic 1225c on board and i see another 2 main board like this mb i see 1225c on it
but in the schematic i see another one
i search and get this ic datasheet
[url]http://gulfup.co/50g713uywvpu[/url]
[URL=http://gulfup.co/50g713uywvpu]slvu735.pdf - 969 KB[/URL]Re: toshiba c850 no power<br /> <br...mb i see 1225cLeave a comment:
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Re: toshiba c850 no power
i'm so sorry this is exact schematic io nuvoton not ene kb i replaced io nuvoton but i'm confused between to motherboad toshiba in my shop
you'r right my frind this is mb photo
and ic 1225c circle by yellow
[url=https://www.0zz0.com][/url]Re: toshiba c850 no power
i'm so sorry this is exact schematic io nuvoton not ene kb i replaced io nuvoton but i'm confused between to motherboad toshiba in my shop
you'r right my frind this is mb photo
and ic 1225c circle by yellowLeave a comment:
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toshiba c850 no power
[SIZE="4"]hi i have Toshiba c850 plf/csf 45w uma dsc mb rev 2.1 with AMD chip and pch chip
problem that 20v on charger resistor is ok
but ic tps 1225c is very hot - no short in this circuit
i replace it but still to much hot
i replace io ene kb 930qf-a1 but ic 1225c still very hot
on power supply show 0.136 amps
i need you help thank you [/SIZE] -
hp 8460 charging problem
i have 2 lap hp 8460
and one hp 8470p
problem battery not charging at all
replace batt and bq736 charging ic
on charger coil 1.0 volt
lap turn on and work but batt not charg
i need your help
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