PLEASE CAN SOME ONE HELP ME FIX THIS BIOS
THE FAULT IS AFTER POWER ON DELL LOGO COME'S AND SCREEN FREEZ NOTHING RESPOND
cottonwood mlk mb 14275-1 pwb:TFFRC REV: a00
service tag (S/N) BKG3P52
dell core i5 laptop...
admharsha7777
Member
Last Activity: 01-28-2025, 09:01 PM
Joined: 01-31-2021
Location: Central province
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I have this pf02_mainboard_v201 board problem is power on but no display. I couldn't find any schematics or board view for this motherboard. I think fault with bios but I couldn't find bios bin file for this model. I attached here original bios file. can anyone Repair it for me ? I also uploaded Motherboard pictures...Leave a comment:
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I have this pf02_mainboard_v201 board problem is power on but no display. I couldn't find any schematics or board view for this motherboard. I think fault with bios but I couldn't find bios bin file for this model. I attached here original bios file. can anyone Repair it for me ? I also uploaded Motherboard pictures CAN ANY ONE PLEASE TELL ME HOW TO UPLOAD BIN FILE HERE THERE IS NO OPTION FOR THATLast edited by admharsha7777; 12-26-2023, 10:12 PM. -
My Name is Harsha Dissanayaka
I am Professional Laptop Repair Technician from Sri Lanka
this forum helps me lot . I wish good luck for badcaps.netLeave a comment:
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try this...Leave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
here is power up sequence i marked voltages there. onlr rsmrst missing , I have no idea what to do
[ATTACH]314351[/ATTACH]...Leave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
please check the screenshot i marked voltages there
[ATTACH]314350[/ATTACH]...Leave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
[attach]314349[/attach]...Leave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
when I grounded PR4019 pin 2 manually PU4002 Gate 1.4V valtage rise up to 9V, but in both cases 19V pass to the other side,
in the other hand RTCRST_ON not generating by kbc 120 pin, now I have no idea how to fix this oneLeave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
PU4002 Gate valtage is - 1.4V
I chaneged PR4019 from same donor board
I also changed PQ4006
I reprograme bios again
also I changed q2703 and q2701 but the problem is same
also I grounded PR4019 pin 2 manually but nothing changed,
I don't think PQ4006 open drain MOSFET because I injected gate pin 3V then source pin become 0V but the problem still same,
I feel like probelm with q2102 as I mentioned before in this mosfet drain pin RTC_RST# is 2.5 V mosfet gate RTCRST_ON_...Last edited by Vesko356; 10-12-2023, 07:59 AM. Reason: Attached schematic removed and replaced with link.Leave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
PQ4002 not in this board ,
pq4006 Source pn is ground
D pin powe charger Ac ok present - 1.5V
gate pin AC_IN# is oV this gate directly connected to the KBC pin 73 (PSL_IN1)
this board is killing me
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Re: Dell Inspiron 3520 rsmrst missing Help
3D3V_AUX_KBC generating properly 3.3V...Leave a comment:
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Re: Dell Inspiron 3520 rsmrst missing Help
thank you so much for yor attention those pin voltages below. please help me.
PSL_IN2 KBC pin 93 - 0.6V present
KBC pin 73 PSL_IN1 - 0V (AC_IN# -0V)
KBC pin 74 PSL_OUT -0V
BQ24707ARGRR pin5, ACOK#- 0V
BQ24707ARGRR pin6, ACDET - 1.7V...Leave a comment:
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Dell Inspiron 3520 rsmrst missing Help
I have this Problem with Dell Inspiron 3520 40_DV15 MLK MB 11280 mother board,
I couldn't found board view for this board I have similar schematic currently board not turning on.
+RTC_VCC is ok
RTC_RST# 2.5V on q2102 drain pin, in this mosfet gate RTCRST_ON_ showing 0V also kbc RTCRST_ON is 0V
SRTC_RST# also 2.5V
3D3V_AUX_S5 is precent
S5_ENABLE is ok
5V_S5 is ok
3D3V_S5 is ok
Ac in# is 0V
+5VA_PCH_VCC5REFSUS i don't know where to check
PM_RSMRST# No voltage
AC_PRESENT... -
nec ms-13821 ver 1.0 schematics
please anyone have nec ms-13821 ver 1.0 schematics and boardview -
Re: Dell INspiron 3580 EDI54 LA-G712p rev 1.0(a00)
3580 EDI54 LA-G712p rev 1.0(a00) I tried all bios bin in this post none of working no display all vantages are ok even pltrst is generating only problem i saw fan not working fan1_pwm missing .. even processor really hot fan1_pwm not generating. fan is ok. can any one please tell me what is the problem with this board. my old bios attached here can any one tell me is that bios good or bad or fix it
old bios...Leave a comment:
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