Samsung A16 Power Button & Volume Keys Problem Solution | Button Strip | Jumper Solution
Автор: Mobile hardware solutions
Загружено: 2026-01-30
Просмотров: 13
Описание:
This video shows the complete Samsung A16 power button and volume keys problem solution, including:
Power button not responding
Volume up/down keys not working
Keys stuck or unresponsive
Flex strip damage
Motherboard input line or IC issues
The board-level repair tutorial includes button FPC/strip inspection, continuity testing, filter and diode checking, voltage tracing, jumper solutions, and connector repair.
Designed for mobile repair technicians for step-by-step professional hardware repair guidance.
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Complete Samsung A16 power and volume keys repair guide
🔧 30 Step-by-Step Repair Instructions
Power off Samsung A16
Remove SIM tray
Heat and open back cover
Disconnect battery connector
Remove mid-frame screws
Inspect power button strip
Inspect volume up/down key strip
Test FPC flex continuity
Replace damaged button strip if torn
Clean connector with IPA
Inspect connector pins for bending or corrosion
Apply pressure and test button
Check motherboard button input line
Measure pull-up voltage on key lines
Check grounding path of buttons
Test series diode/filter on button line
Replace open/damaged SMD components
Reflow cold solder joints on FPC connector
Test buttons with multimeter continuity mode
Check CPU input if buttons unresponsive
Reflow CPU IO pad if required
Replace flex connector if damaged
Test strip with new flex if needed
Partially reassemble phone for testing
Test power key long press
Test volume up/down keys
Verify consistent key response
Fully assemble phone
Run QC test for buttons
Deliver phone after full testing
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