ASUS eeepc1025C REV1.2G BIOS dump ready for download.
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| credits to the owner of this image |
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Saturday, October 12, 2019
Friday, October 11, 2019
Tuesday, July 23, 2019
Lenovo Ideapad 320 No Power Successfully Revived
I successfuly repaired this Lenovo Ideapad 320 laptop with board id NM-B242 Rev 1.0. According to customer, they used universal charger and set to 24V causing the laptop not to power on because of overvoltage.
I check for shortage using power supply but it has zero ampere. I dismantled the unit and check if there was a burnt components, but the board was clean and shinny.
I check 19V rail. I measure voltage input of the first mosfet, it has 19V. But on the output side, it has zero volt. I thought the culprit was the 2nd mosfet. But before I checked the 2nd mosfet, i disconnected the jumper PJ301. Then measured the output of the second mosfet if it has 19V. YES, it has! Therefore the problem lies on 19V rail.
So, I downloaded the schematics, and check the 19V rail. By analysing the schematic diagram under page 53, I planned to lift PQ314 hoping that this mosfet was leaking. I lifted the mosfet, then checked 19V at current resistor PR301. Huwaw!!! 19V was there! I quickly replaced PQ301 N-Channel type mosfet. Now the laptop has been revived.
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Saturday, July 20, 2019
How To Remove Icloud Account On iPad 3 GSM
Removing the icloud on iPad 3 GSM will disable the GSM feature. Instead, it will use as iPad wifi only. The instructions are very simple. Dismantle the iPad and remove the resistor as shown on the picture below.
After removing, the iPad must be in DFU mode. Flash it to iPad 3 wifi firmware via itunes or 3utools.
Finally, activate it and you're done.
Wednesday, July 17, 2019
Lenovo Ideapad 120S-14IAP No Display Successfully Repaired
4:29:00 PM
bios bin file, laptop, Lenovo, Lenovo Ideapad 120S-14IAP, No Display, RT805F bios programmer
2 comments
The customer said that this laptop was from US, and upon receiving the unit they complained that there was no display. In my thought, maybe there was a bios program corruption. That's the reason why I flashed it on my RT805F bios programmer. See images below.
Board ID: 120S_MB_V1.0
Back up first before writing.
Then write good bios bin
Now its done.
Board ID: 120S_MB_V1.0
Back up first before writing.
Then write good bios bin
Now its done.
iPhone 6 No Power Successfully Repaired
This iPhone 6 has no power due to disconnection or shorted to ground. What I first did was by visual checking. I look at all capacitor that might have corrosion. But the board was so clean. I then use my digital tested to test the capacitors one by one by setting it to diode mode. I first check on the area where vcc is connected. To make the story short I figured out what was the bad capacitor. See image below. By removing the bad capacitor, the unit came back to life :)
Saturday, April 13, 2019
How To Repair iPad Mini GSM No Power
This iPad Mini GSM has no power due to shortage on board. What I quickly did was I look over the microscope, then attached the battery. I saw the defective capacitor heats up whenever I attach the battery. Removing the bad capacitor solved the problem.
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| remove |
Acer Aspire E1-531 No Power
I received this Acer Aspire E1-531 from co-tech from Asingan, Pangasinan, comes with no power. The very first thing I checked was if the unit is shorted. I set my 30V power supply to 19V and connect it to the unit, and found out that it's 19V shortage to ground. See picture below.
Almost 1 ampere rating, means there is a short to ground. The 19V line was shorted to ground.
I disassembled the laptop and slowly and carefully saw over my microscope the corroded parts especially capacitors. I saw suspected shorted 3 caps near battery terminal. I removed them one by one and checked but all three are good. I look at the area near lcd flex connector terminal, I saw 2 suspected caps. I carefully removed them and checked! Viola! One of them was shorted. Got Yah!
After removing the shorted capacitor, the laptop came back to life :)
For info, i didn't replace the bad caps. I just remove it.
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| now fully working |
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