baddjavo
Senior Member
Last Activity: 03-13-2025, 08:51 AM
Joined: 06-13-2018
Location: Zajecar
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Post 2# bios working. Confirm. Tnx [B]jasko_jacker [/B]!Post 2# bios working. Confirm. Tnx [B]jasko_jacker [/B]!Post 2# bios working. Confirm. Tnx [B]jasko_jacker [/B]! -
Believe you mcpisig123. Battery returned to seller ... maybe ill try working bat one day, ill write here. Thinking maybe chip on bat board is locked, and how to activate, maybe manually add voltage or to ground certain pin....Leave a comment:
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After "risky" bios update situation is same. Battery icon is always present even without battery.Leave a comment:
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So u think its battery problem ? I will negotiate to return this one and take battery for another laptop model.
On uploaded reports one battery is original and it showing 0%, and other one is new replica or knockoff like u said. After bios update ill report.Leave a comment:
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Hmm. This new battery replacement is not original, could be problem, i contacted seller he can send another one, but not sure if this will help.
Can u look in those report please. Iam quite confused....Leave a comment:
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Working Asus r752lx, orange light when connect adapter, even without battery
I have 17.3 inch asus laptop probably whit dead battery, so i decided to replace with new one. But not charging, on old battery show 0% and with new battery its 1%. Looks like that laptop detecting battery always. On battery connector its around 15v, 3v, 3v, gnd.
motherboard is : tmt YA-4A 19 94V-0 E114139, 1533-61-22
No schematics, no boardview, but i found BQ735 charging chip on mb.U can see voltages on picture.
I checked mosfets, not all, they looks fine.
If anyone can explain what here happening ...... -
Maybe i should measure resistance a cross main rails and calculate current coz i have maximum current ratings in schematics. Maybe ocp preventing regulators to give voltage, and 3 blinks meaning that mb trying 3 times to power up.Leave a comment:
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[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3313850}[/ATTACH] all pu2 voltages...
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Yes iam aware of that problem, using HP adapter middle pin is 18,5V then after connect to mb voltage drop to 0.52v , further going to ad_type in ec chip pin 71 voltage is 0.6v. I think this is ok but maybe i`am wrong. I did re-check right now.Leave a comment:
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I have only motherboard. Bought 20x mb from local market.
Mosfets ok, charger ok. Yes adapter giving voltage. Resistance is ok on all coils. No power when measure right.
Ima thinking about it8528e/hx what pins need to be high or low before AC_LED_ON#
p.s. original bios added [B][[COLOR=#8e44ad]MOD EDIT[/COLOR]] [COLOR=#d35400]Bios requests go here[/COLOR][/B] --> [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only[/url]I have only motherboard. Bought 20x mb...Leave a comment:
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HP pavilion 15-n038so no blue led light on dc jack
board: daou92mb6do rev d
model: 15-n038so
After press power button 3x blinks on dc jack. If i remove bios chip nothing happens. Tried few bios bins, result is same.
Have old bios, included here, schematics, board, and pictured of mb. [B][[COLOR=#d35400]MOD EDIT[/COLOR]] [COLOR=#8e44ad]Link to schematic/boardview[/COLOR][/B] --> [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/44319-hp15-da0u92mb6d0-schematic-needed#post893026[/url]
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Let close this thread. Finally i have found that pu5001 working properly but getting hot, taking so much amps.... traced short over pu3601 out ... and then short lead me to c2729 ! Its a BADCAP !
Thank to all percipients. BADCAP !!!Leave a comment:
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After searching for possible shorts i have found that one of mosfets pu5003 is shorted sourse drain side, but gate is not. Its surprising that lower mosfet died usually that is upper.
So i removed mosfet then after pressingpower button blue led light on ! Then i changed mosfet and nothing! Same place where i started.uhm
On oscilloscope i found mosfet gate signal no impulses so probably controller also died......Leave a comment:
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Ressistance in Kilo or Mega, and voltage in picture. All mosfets good.
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3308694}[/ATTACH]...Leave a comment:
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I think i get it.
Board not powering up after tweezer shot.
Still dont have ec programmer.
I will take bios backup.
Update. I just noticed after pressing pwnbtn laptop is trying to start giving short faint blink on power led, and voltages coming from 3v.5v reg, only for a moment.Leave a comment:
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Ok. If i get it, ecrst# is impulse for short time, then returns to 3.3v for EC normal mode. So i should try to change bios ?
Can u explain why 3v,5v regulator working when short ecrst# to zero ?
Didnt find any shorts on board. Laptop used on battery then sudden shut down, after that laptop wont turn on.Leave a comment:
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ECRST# signal is generated by EC chip dropping voltage to zero probably mosfet inside EC. This is initialization stage BIOS coming later. I think EC chip is good.Leave a comment:
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RTC_RST# should be ZERO, coz #, this is not good.
ECRST# should be ZERO.
I just short to gnd pin 85 with tweezers, and 3v and 5v always voltage started.Leave a comment:
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Thank you for answer. Please can u specify where to find RTC_AUX_S5 on which component.
RTC_RST# = 3V that not good, line going only to cpu.
3D3V_AUX_S5 = 3v
3D3V_RTC_AUX = 3v
5V_AUX_S5 = 5v
ECRST# = 3VLeave a comment:
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Acer ES1-512 series wont turn on
laptop: Acer es1-512-C79X
model no: MS2394
S/N: NXMRWEX01152004e64660
mb: EA53-bm/EG52-BM MB 14222-1 448.03707 0011
Few days iam trying to figure why wont turn on after pressing pwrbtn.
I have 3v on pwr btn.
3V and 5v not present (if i short ecrst# pin 85 on EC chip then 3 and 5v present)
Probably missing signal on EC chip, but i dont know which one.
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3307772}[/ATTACH] [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3307773}[/ATTACH]...
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