Thursday, August 3, 2017

Tuesday, August 1, 2017

Monday, July 31, 2017

How To Fix Samsung Galaxy Grand Neo Plus Can Charge, But Can't Power On



Here's a Samsung Galaxy Grand Neo Plus GT-i9060 from my customer. He said that it normally charge, but it can't be on. Basically it's a power switch ways problem or the switch alone. Let's check the switch. 

After dismantling the unit I found that its switch flex is clean, no trace of dirt or corrosion. I suspected a rust membrane :) But first I check the switch connection by shorting the positive and negative switch connection. It's good. 



What I need next is to check the switch flex's membrane. And as I have expected, the membrane is rusty as seen in the images below. Just clean it and you are done.


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Thursday, July 27, 2017

Repairing iPhone 4 No Power

History: water damage

First thing first, that is basic troubleshooting
1. Open the unit, check if grounded/shorted. Not shorted/grounded. Also check board by visual checking.
2. Replace battery and try to power it on. Still can't power on.
3. Connect usb charger to laptop and see if it connect or asking for usb driver. No reaction.
4. I always do this, remove lcd and connect it again to laptop. Finally it connect! I thought LCD set was damage. but when I replace LCD set, still it doesn't power on.
5. Analyze.... While I'm thinking I notice a heat up on power IC and other neighboring components.
6. What I did is to connect its positive and negative terminal to power supply and found out that output current is not normal when you press power on(with LCD attach)
7. But when powered it on without LCD attach, current output is normal. Aha!
8. I Immediately check the LCD connector ways and here's what I've found:


9. The 2 capacitors are shorted.. Removing these 2 fixed my problem.



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Saturday, April 22, 2017

Tuesday, March 28, 2017

Repairing Lenovo A3300-GV Not Charging And Hang Up

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 not be able to reprogram the tablet. The only solution to the problem is to find the data ways. Just simply jumper it. You can see a hint on the image below for the connection. After applying the 2 jumpers the tablet can now be reprogram. I use CM2 dongle to reprogram the tablet.




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