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Forum: Troubleshooting Laptops, Portable, and Mobile Devices Today, 02:41 AM
Replies: 13
Views: 4,020
Posted By on/off
Forum: Troubleshooting Laptops, Portable, and Mobile Devices Yesterday, 10:40 AM
Replies: 23
Views: 451
Posted By on/off
Re: hp Stream ( No 19v on power supplies )

Look like the OP have a little mis, i think...
On post#1 PQ22 have correct voltages on all pins.http://i63.tinypic.com/2lo6ng5.jpg
(motherboard 1voltage at charge port_JPG).

On post# 19 pin10...
Forum: General Electronics Technical Discussion 03-15-2019, 04:16 AM
Replies: 9
Views: 146
Posted By on/off
Re: help indentifying component please

Just wondering Why the chinnesse stuff put marking on PCB M2 and using mosfet?
Forum: General Electronics Technical Discussion 03-15-2019, 04:04 AM
Replies: 9
Views: 146
Posted By on/off
Re: help indentifying component please

Mostly 99% work on laptop repair, from there i knowing alpha omega's mosfet. Also have several time see mark with "dash" and number/letter with orientation anticlockwise 90 degree on the end body...
Forum: General Electronics Technical Discussion 03-15-2019, 02:36 AM
Replies: 9
Views: 146
Posted By on/off
Re: help indentifying component please

I guess my chosen word went wrong. "seem".

Come here on Great Forum not only want to learn electronics, but also I've want to learn to be good on conversation/writing on post. Sometimes i didn't...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-15-2019, 02:26 AM
Replies: 33
Views: 647
Posted By on/off
Re: Asus x55a no power or bootup

Hmm, It's out my expectation. Maybe the resistance was opposite what i was thinking. on those line (+3VA_EC, +3VA, +3VAO should be range kilo ohm value or voltage drop when diode mode (0.4V). JP3001...
Forum: General Electronics Technical Discussion 03-14-2019, 08:37 AM
Replies: 9
Views: 146
Posted By on/off
Re: help indentifying component please

AFAIK AO6402A single N-channel

Seem AO6424A:

http://www.aosmd.com/res/data_sheets/AO6424A.pdf
http://www.aosmd.com/res/markings/AO6424A.pdf
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-14-2019, 08:19 AM
Replies: 8
Views: 118
Posted By on/off
Re: MOSFET alternative FDMC6679AZ

si7129dn (https://www.vishay.com/docs/68966/si7129dn.pdf)
Forum: Schematic Requests ONLY! 03-14-2019, 08:12 AM
Replies: 18
Views: 6,056
Posted By on/off
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-14-2019, 08:06 AM
Replies: 33
Views: 647
Posted By on/off
Re: Asus x55a no power or bootup

Yes. On post#28 I mention the EC/KBC chips itself, Not Firmware. Sometimes other techs said SIO chips (Super I/O (https://en.wikipedia.org/wiki/Super_I/O))
Forum: BIOS Requests ONLY! 03-14-2019, 07:55 AM
Replies: 6
Views: 131
Posted By on/off
Re: da0lz9mb8g0 rev.g bİOS

Check this link:
https://www.badcaps.net/forum/showthread.php?t=54123&highlight=da0lz9mb8g0
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-13-2019, 04:53 PM
Replies: 14
Views: 205
Posted By on/off
Re: please help toshiba c850 no display

Just extract it first, then drag and drop any file with extension .ASC (whatever you choose on folder TODs) on your favorite boardviewer software.
Forum: BIOS Requests ONLY! 03-13-2019, 10:42 AM
Replies: 4
Views: 72
Posted By on/off
Re: acer aspire E5-574 locked bios

Probably its related TPM lock, maybe your client have lock with it on BIOS. Actually I don't have any idea, what purpose TPM on several newer mobo on laptop.
...
Forum: BIOS Requests ONLY! 03-13-2019, 05:54 AM
Replies: 2
Views: 35
Posted By on/off
Re: Lenovo ACLU9 ACLU0 NM-A311 REV 1.0 EC

Here: https://badcaps.net/forum/showpost.php?p=777166&postcount=4
Forum: BIOS Requests ONLY! 03-13-2019, 02:43 AM
Replies: 9
Views: 128
Posted By on/off
Re: Iris BTM MB 14214-1 bios dump

That's strange, I can't extract from web update...need to learn how do that :smile::smile:
Forum: BIOS Requests ONLY! 03-13-2019, 02:40 AM
Replies: 35
Views: 443
Posted By on/off
Re: HP 14-BS507TX bios needed

Follow post#12 (https://www.badcaps.net/forum/showpost.php?p=880346&postcount=12), you got schematic + BV
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-13-2019, 02:38 AM
Replies: 14
Views: 205
Posted By on/off
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-13-2019, 02:34 AM
Replies: 23
Views: 451
Posted By on/off
Re: hp Stream ( No 19v on power supplies )

Thanks, I think this the correct one. Also the BV seem match, only sub board give us confuse, because the layout BV was put together between mainboard with sub board, I think.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-12-2019, 05:15 PM
Replies: 33
Views: 647
Posted By on/off
Re: Asus x55a no power or bootup

I would prefer classic way by clean JP3001 with solder wick or braids, when the gap was clear, measure again on PSL8112, hope resistance going high. therefore we know probably EC/KBC chips that was...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-12-2019, 05:00 PM
Replies: 23
Views: 451
Posted By on/off
Re: hp Stream ( No 19v on power supplies )

Sadly, seem the bv doesn't match. Use schematic just as reference.

Charging chips should be PU4 OZ8691ALN page30
Forum: Schematic Requests ONLY! 03-12-2019, 04:46 PM
Replies: 6
Views: 117
Posted By on/off
Re: Acer aspire e3-111 diagram

No. Just trial and error. Frequently using tool on Right-bar, when you want to find component. First need click show element (F4) then Find button will active and could use "find by name".
Forum: Schematic Requests ONLY! 03-12-2019, 04:37 PM
Replies: 7
Views: 181
Posted By on/off
Re: Acer ES1-571 schematic

I would prefer to check RN5213, if you can access and find it.
Forum: BIOS Requests ONLY! 03-12-2019, 04:41 AM
Replies: 9
Views: 128
Posted By on/off
Re: Iris BTM MB 14214-1 bios dump

Upload your backup, maybe someone will help you.
Forum: BIOS Requests ONLY! 03-12-2019, 04:35 AM
Replies: 35
Views: 443
Posted By on/off
Re: HP 14-BS507TX bios needed

Maybe not match with original board. since your original broken (BTW, what code your bios IC? my ezp2010 failed when detect IC if MX IC 8mb 1.8V, maybe you face same issue, cannot read if it MX IC...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 03-12-2019, 03:24 AM
Replies: 3
Views: 78
Posted By on/off
Re: Iris BTM MB 14214-1 turn on by itself no video

I assume maybe what you mean "pin" is block circuit.

It normal on block circuit RAM's regulator have output 1.35V since your board using DDR3L (suffix L mean low voltages).
Showing results 1 to 25 of 288

 
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