valente222
Senior Member
"I WORKING"
Last Activity: 05-12-2025, 06:15 PM
Joined: 02-17-2021
Location: LIMA
-
help SG2701B01-7 panel chinese, would this integrated circuit be equivalent? Chinese IC CS601C regulator.
Hi, I'm repairing this Chinese SG2701B01-7 panel. There isn't much information about it. The original part for the panel is a CSOT CS601C regulator. I can't find anything commercial on Aliexpress; there's only the CS601 without the final 'C'. They claim it's a variant. But will it be compatible? Well, my diagnosis on this screen is a video problem; the image is practically black, although there is HDMI communication. The LED light is on (backlight), but there is no VGL, no 3.3V, and no VSS. It seems that this IC is the one controlling these voltages. The monitor worked correctly for a moment and...
-
Hello sir, thank you for responding. Yes, the crystal has been replaced. The RTC tracks are flawless. Just by touching that newly activated track, the measured intermediate resistance is 10 Mohms. Everything is correct. Regarding the rust you mention, I discovered the ferrite coil in the ADP circuit is oxidized. I'll replace it and see if the condition changes....
-
Doubt with RTC ASUS LAPTOP X413JA not working.
HELLO, I have a question regarding this laptop model, it is an Asus x413ja. Pcb x421j r2.1. This laptop is being given to me because it does not turn on. Only when connecting the ADP does it consume 9mA. Something normal 3.3v and 5v present. also 1.8v. It does not react to the power button. And the issue is right in the RTC circuit, there is no movement. But the funny thing is if I place the probe of my multimeter at either end of the RTC crystal, the computer turns on normally. Faulty CPU? Be careful, I am only testing the motherboard with the battery disconnected. What do you recommend?...
-
Thank u, worked to unlock a Acer Aspire a315 😀Leave a comment:
-
Thanks you of schematic...Leave a comment:
-
I appreciate this link. I use the open viewer a lot to resolve some points. But Allegro is more complex and helps in some aspects, I don't know why version 24.1 cannot see files from version 16.6. For me it's programmer nonsense haha....Leave a comment:
-
Hello Mr. mon2, I thank you for your quick response. I'm seeing how I open the schematic, but I get an error to open in ALLEGRO, it asks me to install version 16.6. Do you know what other viewer works for brd files?...Leave a comment:
-
Someone help me identify this integrated in Acer Swift 1 laptop please.!!!
Hello friends, I have this equipment with an explosion in the U6100 part, 3v alw source. Apparently (I don't know what integration it is) I have the schematic but an error appears in Allegro Viewer. I share the schematic in case someone has another compatible viewer.
The model identifier is SF114-31
BOARD: OXFORD2-6050A2888301-MB-A01 MODEL: N15V2
S/n:NXSHWEB002710019D52600​... -
Reviewing personally I have tested with 3 adapters, the first two adapters were original they worked horrible send noise, just measure VCC of the BQ728H charging ic with the probe. "Reference image."
And to top it all off, the noise disappears when connecting the last and third adapter which is NOT ORIGINAL. hahaha it's funny. I will continue to analyze this IC LOAD. Probable manufacturing defect?​...Leave a comment:
-
Mr. mcplslg123 good day, about the equipment only works on the battery. If I want it to work with the adapter I must take out the battery. Also be tested with other voltage adapters. Thinking they were the input mosfets before the main sensing resistor everything apparently ok. The hums are coming from the VCC CPU coils. Could it be that B+ voltages are affecting this sector? With the oscilloscope, it detects noise....Leave a comment:
-
Friend, I started to put brains into this team. Your binary worked, but I had to clean the ME region. if anyone needs can use this binary to disable their ram on pcb nm- c561 rev 1 v14-ikb...Leave a comment:
-
LAPTOP HP 15-DY2059LA / i3-12gen has stability problems in vccpu coils, BUZZING SOUND. ¿Coil whine?
Hello friends, I just received this equipment, it has a strange hum on the board. The computer works fine, outputs an image and starts Windows. But the problem is when charging the battery, a constant loop to charge. In short, it never charges the battery. When the charger is connected, the stability of the CPU is stressed and it seems that the coils make that electrical sound louder. This board is modern and I don't have a schematic. I have checked with a microscope and the pcb is completely new. Has anyone had this happen to them before? defect in driver ic?...
-
yes...Leave a comment:
-
Hello Mr. farouk_1994. thank you. But the bios provided does not have an image on the screen....Leave a comment:
-
HELLO. lenovo V14-IKB laptop
S/N PF1SPHLW
model 81YA
I also point out that I have used the script that was published to deactivate it by Mr. SMDFlea. but I don't have success. The computer still starts with the ram with errors. If someone can help me deactivate that would be great.​...Leave a comment:
-
my fault sir. I didn't have the laptop case. serial: 5CD3260K94 product: D3K98LA#ABM Model: 14-e012L4...Leave a comment:
-
How about friends, I have a vegetable laptop, it consumes approximately 600mA with all its voltages in the coils ready, but the screen is black, tested by cleaning ME, but it remains the same.
Laptop model: HP Pavilion 14-e012la Notebook PC (D3K98LA)​...Leave a comment:
-
HP 14 LA-A993P REV 1.0, identify ic? and not susp# present
I have a Mb LA-A993P REV 1.0 computer, I am guiding myself with these two shared boards. ;
there are some ICs that are not the same, in this case those of the PU1501 (JD4TB) and PUH1 (NF4SA) images.
n, please identify.
330mA of consumption after 8 seconds turns off. +3VALW AND +5VALW present, EC_RSMRST# , LID_SW# , EC_ON# , ACIN# present.
​
SUSP# NOT PRESENT, which would be this the problem does not turn on sub-sources Any leakage?
I also notice that in the PLH2 coil that belongs to +1.05VS according to the drawings I am not sure,
... -
thax u...Leave a comment:
-
Does anyone know if these values ​​are appropriate? Board NM-C871 rev 2.0 Ideapad Gaming Lenovo
I have this equipment that leaked moisture from the bottom, which the PQ3201 damaged the track and does not turn on the machine. remove all two mosfets from that area such as PQ3201(high) AND PQ3202(low). these feed the VCCSA rail. but on this track it has a very low resistance, approaching my absolute zero of my tester to ground (1.3ohm). Could the CPU be bad? I have made this measurement by desoldering the PL3201 coil, taking that measurement on the CPU side.
On the other hand, on the mosfet side, the PU3201 controller, which is the pwm controller, appears to have a damage since...
No activity results to display
Leave a comment: