Samsung i9100 shorted solution is by removing the capacitor as shown on the image below. The capacitor is connected to positive with respect to ground. If this capacitors shorts, the unit will not power on.
Samsung i9100 Shorted Solution
Wednesday, September 28, 2016
Samsung i9152 Shorted Solution
Samsung i9152 shorted board and it doesn't power on. Probably due to over charging. The solution is just remove the capacitor as shown on the image below.
 |
| done! |
OPPO R831K Shorted Solution
This is an OPPO R831K water damage unit. I checked it and the board was shorted. It has many corroded parts. Just remove the capacitor C1838 that is connected in Vbat_PMU with respect to ground as shown on the image below.
After removing the capacitor, the shorted was gone and the unit can now power on.
 |
| remove C1838 |
After removing the capacitor, the shorted was gone and the unit can now power on.
Tuesday, September 20, 2016
iPhone 6S Plus Dark Light On Right Side Of The LCD Screen
Last time I posted the jumper solution for no light on both left and right lcd. This time this is the solution for iPhone 6S Plus dark light on right side of the lcd as show below.
 |
| credits: maxie |
Monday, September 12, 2016
Samsung J120H Shorted Solution
When I connect to 3.8V my digital power supply shut-off. Even on low voltage 1.3V it also shuts-off. This means that the J120H board is fully shorted.
What I did was to put a 3.8V supply using my CD-R KING power bank :) As I connect the board to my power bank, 1 component has been burnt out. The is the capacitor. The shortage was gone after I removed the capacitor. I powered it on, and the J120H unit went well :)
 |
| using power bank as a supply |
Samsung J120H Switch Ways Solution
The image below is the J120H or often called as J1 2016 is the power switch ways. Just apply a jumper if the connection is open.
Saturday, September 10, 2016
Cloudfone GEO 402Q Can Charge, But Can't Power On
This Cloudfone GEO 402Q is charging but it can't power on. Below is the Cloudfone GEO 402Q power switch ways. I trace it and I found out that the negative connection is open. SOlution is by jumpering, like shown in the image below.
Repairing iPhone 4 Wet Unit
I got this wet iPhone 4 few days ago, and the board was shorted when I checked it on my analog tester after I disassembled. When a unit is shorted I use to connect it on my power supply with 3.8V. When I connect it to my digital power supply with 3.8 volts, my power supply shorts, or in other words it will display 0V and 0A. This will prove that the unit has a full short.... When this happens I use to turn down the voltage on my digital power supply. I use 1.3 volts. Then I connect again to the board, and it displays high ampere current, but my power supply doesn't short. That's good! The next thing I used to to is to touch the iPhone 4 board and feel if there's a component that is hot or heating. The most common components that easily heats up are capacitors.
Finally I traced the hot component. And that is the camera flash IC. This IC is sealed. I removed the camera flash IC via hot air. After removing, the shorted is gone. I assembled the iPhone 4 immediately. Viola!
I explained to the customer that I don't have that kind of IC. I told her that the most important thing is that her iPhone can now be use :) Hirap talaga mag english. Dugo na ilong ko huhuhuhu.
 |
| remove camera flash ic |
Friday, September 2, 2016
Thursday, September 1, 2016
Repairing Shorted Samsung SM-T231(No Power)
When I am repairing a unit with shorted board, I always connect it to power supply. There are 3 things I must check. (1) If it is full shorted. That the power supply will show zero reading. (2) If it is half-short(that's what i call it). That the power supply will not go to zero reading but it has high ampere reading. (3) If it has s small short. That the power supply will not go to zero reading but it has very low ampere reading. These are my own description.
I repaired this Samsung tablet with model number SM-T231 in just a few minutes. I only got hard time in dismantling the tablet because its very hard.
And after dismantling the tablet and found out that its board has a shorted board. I checked it on my analog tester and it has zero reading.
I connected my digital power supply alligator clip positive to the positive terminal of the tablet, with respect to negative. It has a high ampere rating. And if it has high ampere rating what I used to do it to put my fingers on each of the components on the board, most especially the capacitors. You know why? The deffective component/s will get heat! And like what I have expected, one capacitor heats up. I quicktly determine what component is deffective. Just see the picture below. As I have expected, CAPACITOR!
After removing the capacitor, shorted reading is gone. Ans the tablet can power on now. :)
Repairing iPhone 6S Plus No Light On LCD
If there's no light on LCD, most probably there;s no supply on LED. You must get a supply from a capacitor to make the LED light.
 |
| right |
 |
| left |
All credits to my friend abe05 :)
Popular Posts
-
I successfuly repaired this Lenovo Ideapad 320 laptop with board id NM-B242 Rev 1.0 . According to customer, they used universal charger an... -
I personally tested this bios bin file on Acer Aspire ES1-432 with BOARD ID: DA0ZQFMB6F0 REV:F . DOWNLOAD DA0ZQFMB6F0 REV.F BIN -
Board ID: ASUS X101CH MAIN BOARD REV. 2.3 DOWNLOAD ASUS X101CH Tested Bios Bin File -
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 ... -
After removing the damage charging port pin2 and pin4 lifted, in other words it was opened circuit. If this pin2 and pin4 is open, you will... -
I received this Toshiba Satellite C850 with no power, no light indicator. First I connected to 19v power supply to see the current readin... -
Last time I posted the jumper solution for no light on both left and right lcd . This time this is the solution for iPhone 6S Plus dark lig...
