karlox
Senior Member
Last Activity: 03-14-2025, 07:17 PM
Joined: 12-19-2017
Location: Oaxaca
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Sorry, but since you managed to identify it, it took me all morning searching through data sheets and diagrams before asking for help here.... -
The bars are in a different position, is it important? From the data sheet I reviewed TPS562208DDCR, it is viable because the circuit is supplied by 12v 1a...
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Thank you, if that's it... thank you very, very much...Leave a comment:
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LENOVO YOGA Y50-70 Unauthorized wireless
Good day,
I have a Lenovo Yoga Y50-70 with a Core i7 processor. It comes with a dual Wi-Fi AC-7260 card with Bluetooth 4.0. I want to upgrade the card to an RTL8723DE, which has a chip with Bluetooth 5.0. However, I get this error when booting up the device:
[I]"Unauthorized wireless network card is plugged in. Power off and remove it."[/I]
Is this configuration set in the BIOS? Can I modify it?
Thank you in advance.
Good day,
I have a Lenovo Yoga Y50-70 with a Core i7 processor. It comes with a dual Wi-Fi AC-7260 card with Bluetooth 4.0. I -
Thanks, but it doesn't work. I have a flashing power LED and it immediately turns off, thank you....Leave a comment:
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BIOS HP 14-ax113la DA0P9MB26A0
Hello! Greetings, can someone help me check the BIOS backup programming of this laptop? I backed it up with NeoProgrammer, but when I transferred the code to the chip, the device's power LED turns on and then immediately turns off. The tragic thing is that it was working; I made a backup because I replaced a chip that was causing the battery not to be detected. I tested the device and it worked, the battery was detected. However, as a method I sometimes apply when working with devices with power issues, I erased the BIOS IC and reprogrammed it, but this time it failed. I downloaded the BIOS from... -
Thanks, I've already corrected my mistake. I'm sorry, I'll be more attentive to the rules...Leave a comment:
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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. -
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
...Leave a comment:
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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,... -
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. -
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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thank you, yes it is the ic....Leave a comment:
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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]... -
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]...Leave a comment:
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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)... -
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...Leave a comment:
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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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