Issue:
Camera (No rear cam & front cam upside down)
*Pag openg ng camera app deretso na sa front camera at upside down ang lumalabas na image
Diagnosis:
1. Check the diode values on front cam
- All values are close to normal based on reference (Borneo Schematics)
2. Check the diode values on...
Issue:
1. No power
2. Not charging
Solution:
1: Removed shorted capacitor related and connected to PP_VDD_MAIN line (C4902)
Reference used:
1. Phone board for bitmap (pang locate ng line)
2. Borneo for schematic diagram (pang determine ng value and role of component)
Diagnosis Procedure:
1...
Issue:
1. Low current on charge
2. Auto drain battery (newly replaced)
3. High temperature on back case
Solution:
1. Replaced U2IC
Diagnosis Procedure:
1. Check current on product schematic (reading is 1.1A looks normal but eventually drop to .6, .8 and stays there)
2. Disassemble and use DC...
Issue: Failing switch
Procedure:
1. Check if the power switch button has signs of damage. (visual inspection)
2. Test using continuity mode in multimeter. Kung ok pero pumapalya minsan remove the button using hot plate.
a. Apply flux on the button and prepare the hot plate o kahit ung part ng...
Not charging and dead batt issue..
Steps:
1. Check physical condition of charging pin. (Replace if there are signs of corrosion and pseudo soldered pins)
2. Check battery if minimum charging voltage is present (around 3.7V)
3. Check if around 5V voltage is present on the positive line of the...
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