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budiex
New Member
Last Activity: 09-02-2021, 01:56 PM
Joined: 07-27-2021
Location: santiago
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Re: X453SA no power
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Re: Clevo W25CEW doesn't save Bios settings / shutdown issue
This was seen a long time ago, it was almost always related to the cpu clock, to solve it a small Overcloking was done from the bios to the cpu (trial and error), it was increased by +1mhz until it stopped failing, nowadays I don't know if this is still working.
Another thing you can try is putting the processor that was changed and check if the failure persists, if this is solved could say 90% sure that it is a problem of cpu frequencies.
Also this error was given by not properly configure the bios, date,...Last edited by budiex; 09-01-2021, 12:20 PM.Leave a comment:
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Re: Lenovo Y520 151KBN (i7) Graphics NVIDIA GTX 1050 problem ...
If it is the GPU basically you will have to change the chip if it is bad, or do a reballing if it is working fine.
To test if the chip is bad soldered, first do a good cleaning with isopropyl alcohol, if it is liquid or moisture damage apply an ultrasonic wash if you have the machine.
After cleaning well you can do a small reflow, at 200 ° at most 1 to 2 minutes at most and test if the board gives video.
The reflow is not a solution, if it gives video it will be only for a while, if or if you will...Leave a comment:
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Re: samsung board ba41-01724A NY or NIKE15-QC/BBY
Friend do not inject voltage without being sure, that model of motherboard has no schematic or boardview, most likely you have a wrong one.
The measurements you should do without schematic basically are:
Check that the board is powered which is usually (19v~20v) this is checked on the current sense resistor, which is almost always after 2 mosfet where the board is energized.
Check the "ALW" sources which are one of 3v and 5v which are usually one very close to the other, these without schematics you have...Leave a comment:
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Re: Lenovo Y520 151KBN (i7) Graphics NVIDIA GTX 1050 problem ...
Try this type windows+R in the box type or paste this devmgmt.msc, inside that window in the "view" tab select the option "Show hidden devices".
Does your device appear as hidden when you perform these steps?Leave a comment:
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Re: Dell Latitude 5590 USB ports not working
If it is possible to block the usb by bios programming.
Usually the webcam also works via usb, on laptops, if you do not have a working webcam it may be an indication of bios blocking.
But if that were the case you would have the 5v. usb power supply, I would check the line that goes from the usb to the +5VALW source.
After checking that and if all the measurements are correct I would measure the Southbridge.Leave a comment:
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Which Smd component to replace - DAG3JBMB8D0
Hello first of all, data to take into account:
Motherboard: DAG3JBMB8D0 REV: D
Computer: HP Pavilion Gaming Laptop - 16-a0006tx
Diagram/schematic/boardview: I can't find them yet.
Problem: Computer turns on and shuts down immediately.
Well, I'm not an expert nor a technician, I just repair things for hobby, some time ago I got a motherboard with its power cable and button.
I assume that the board had been intervened by a technician, they reprogrammed the E.C. and main bios.
I made measurements until I got to the E.C. bios that did not receive...Last edited by budiex; 08-21-2021, 09:50 PM. -
Re: dell n5110 not powering on
Basically the measurements that are made are:
1. The adapter must have a constant current voltage without variations.
2. When connecting the adapter it must not present any voltage change.
3. Verify if the charger's recognition led lights up.
4. To verify if the button of ignition of the computer has 3.3 volts and lowers to 0 volts when pressing it, to check if it does not have continuity in its four sides.
5. The motherboard is energized with 19~20v at the power input stage.
6. On the same stage of the power input,...Leave a comment:
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Re: New Members - please post your introductions here
hi, i am learning to repair, i was told that in this forum i would learn a lot and here we are.
Thanks you all very much for your knowledge.Leave a comment:
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