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Thanks, I've already corrected my mistake. I'm sorry, I'll be more attentive to the rules...
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BIOS HP Stream Laptop 14-ax113la
Good morning, can someone share with me a copy of a working BIOS for this computer? I downloaded them from the hp page, but it is not working for me, I attach a copy of the backup of this card. The worst thing is that it's working for me, I have a suspicion that I'll have to program the EC, the motherboard license plate is DA0P9MB26A0 REV. A
Computer Data Under Repair
HP Stream 14-ax113la
MB DA0P9MB26A0 Rev. A
SN# 5CD1495JDV
Celero N4020
The team went into the workshop because it didn't detect the battery, an error was found in a AON6380...Last edited by karlox; 04-18-2024, 04:10 PM.
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Thank you, I have this data, and I realize something is wrong, but I still can't find the problem...
1-2=3.3V
3=5.2mV
4=5.07V
6-7=5.08V
8-9=1.1mV
13-14=0mV
1-2=12.08k
6-7=60.3k
8-9=59.1k
13-14=160k
...
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Lenovo LA-H103P A little help please!
Hello! I have this card in the workshop with startup issues. The equipment arrived dead. I replaced a coil and IC RTS5448, and now the equipment is turning on with low consumption at 0.04A at 20v. I don't have the complete startup sequence; I suspect there might be a short or damaged component that I can't find. I took measurements on IC PU402, and they seem correct. The coils PL404 have 5V, PL402 has 3.3V, PZZ1, and PLZ2 have 001.0 mV, PL301 has 1.3V, and PL502 has 020.0 mV, In PLG1, I have 073.0 mV, and in PQ313, I have 5-8 19v and 1-3 1.3v. Thank you. Any ideas are appreciated. By the way,...
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RTS5447 vs REALTEK 5447E
I'm working with two logic cards from similar computers "01-DG7BFM8D0 rev: D" and 02-DG7BJMB8C0 rev: C" the first one comes with a RTS5447 IC and the second one has the REALTEK 5447E IC, apparently similar, but not quite. On the first card I made several repairs because the computer wouldn't turn on at all, The AON 6936 mosfets were short, replaced and missing resistors and a few capacitors, of which the second one helped me a lot. The details are that now the first equipment already turns on with very low consumption of 0.10A ampere when the RTS5447 is installed, this is short,...Last edited by karlox; 03-20-2024, 04:29 PM.
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thank you, the logic board is DA0P9MB26A0 REV A, is a notebook hp, The problem is that when you disconnect the charger the battery does not provide charge, it does charge, but it does not keep the equipment on. As there is no diagram I base on the connections of the BQ728H, an integrated of I am not working,...
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ID This IC Please [2QJ]
I sorry for this petition, but a can´t identidy this IC, thank you for yours help.
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"2QJ.png","data-attachmentid":3231793}[/ATTACH]...
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Re: Short board detection DAG7BJMB8C0 REV.C
Thank you, I removed the IC RT366AC, and kept digging, I found the GND layer, there is no short in VIN. The problem was the confusion with believing that there was part of track 28 left over, but rather it was that the fault removed the enamel that protects the logic card. Thank you, I will cover my scrapes and put a bridge. :violín:
[ATTACH]306460[/ATTACH]...
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Short board detection DAG7BJMB8C0 REV.C
Good morning, I work on a HP motherboard, with a power problem, replace a pair of AOE6936 mosfets that had shorted, a failure of the integrated RT366AC, where the track 28 (VIN) is damaged (attached image) and where I have the doubt of the line that is just above it and making the measurement marks me short, and it is where I can not determine if the fault caused that it reached a GND layer of the card and on that line was the line (VIN) looking at the card more incidents of short on the line (VIN) I found the integrated (EM5209) attached data sheet and where the lines 1 and 2 that carry (VIN)...
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Re: please id IC 6X=4X & Z3 3K
Thank you, thank you for taking the time... Regards ...
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Re: please id IC 6X=4X & Z3 3K
thank you, can you correct me? the Z3 3K is RT8237C...
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please id IC 6X=4X & Z3 3K
Hello! good day can you help me to identify this pair of IC'S ?
IC 6X=4X
[ATTACH]305634[/ATTACH]
IC Z3 3K
[ATTACH]305633[/ATTACH]Hello! good day can you help me to identify this pair of IC'S ?
IC 6X=4X
[ATTACH]305634[/ATTACH]
IC Z3 3K
[ATTACH]305633[/ATTACH]...
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Re: does not turn on lenovo x1 carbon
hello! good afternoon, in the end i spent 5 hours more to the equipment, and it was worth it, i made it revive. i disconnected the processor, and the failure continued, it was frustrating to find a short resistor. but it lives. thanks for the support. ...
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Re: does not turn on lenovo x1 carbon
I will leave the motherboard as deceased, the processor is compromised, the VCC3B line is heating up the gpu..
Thanks for the support
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Re: does not turn on lenovo x1 carbon
hola, buen dìa.
at VCC3B=0.4 ohms... I'll inject voltage according to your suggestion let's see if I roast it once..
thnks!!...
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Re: does not turn on lenovo x1 carbon
hello, annex tensions.
Q9=S19v/D19.4mv/G18.61V, Q36=S17.4mV/D=0.484V/G16.5mv, Q51= pin1 18.14v/pin2 17.73v/pin3 18.52v, Q78=Pin1 18.15v/Pin2 5.0mV/Pin3 0.0V, Q61=Pin1 18.94V/Pin2 7.0mV/Pin3 0.0V, Q79=Pin1 17.75V/Pin2 0.1mV/Pin3 0.0V, Q107=Pin1 18.61V/Pin2 18.94V/Pin3 18.97V.
in C9028 in the VCC3B line I have a short or a low resistance, I am confused, because I have no consumption, nor excess temperature in the whole board. in the whole board.
Thank you, hopefully there...
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Re: does not turn on lenovo x1 carbon
sorry for the lack of information. well it is a Thinkpad Carbon X1 motherboard, LMQ-1 MB 12298-2. the <U7> its matriculation is BQ24760RSBR, is the one I guess is dead, as I have the AVCC line with 19v, but the signal fades there..... thanks
[ATTACH]299660[/ATTACH]
[ATTACH]299661[/ATTACH]
[ATTACH]299662[/ATTACH]
MOD EDIT: Schematic -> [url]https://www.badcaps.net/forum/showpost.php?p=933164&postcount=32[/url]
.Re: does not turn on lenovo x1 carbon
...Last edited by SMDFlea; 05-19-2023, 12:59 AM.
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does not turn on lenovo x1 carbon
I work with a logic card from a lenovo carbon x1 laptop, I have a doubt with pwm U7, 19v reaches #36 AVVC but in #30 vint20 I have only 0.484v, the equipment does not turn on. in #38 acp #37 acn I also have 0.484v. I have damaged the pwm? I am using a regulated source and the current draw is 0.00
any suggestions to determine the failure of the u7?
Thank you so much
[ATTACH]299582[/ATTACH]...
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