Nokia 105 Rm 908 Keypad Ways Jun 2026

Locate a working point on the same line (often a test point on the back of the board or a series resistor).

The Left Selection, Right Selection, and Up/Down Scroll keys share structural paths. If the menu key fails, bridge the outer ring to the closest functional selection key.

The outer rings of the 7, 8, 9, *, 0, and # keys are chained together in a shared circuit loop. nokia 105 rm 908 keypad ways

Because the tracks on the Nokia 105 RM-908 motherboard are extremely narrow, you must use proper soldering techniques:

When the multimeter reads OL , you must manually bridge the broken connection using insulated . Locate a working point on the same line

You can find detailed visual jumper maps on tech forums or sites like Pinterest for RM-908 which often host specific track layouts. Nokia 105 (2023) User Guide - HMD

A common issue is the or specific functional keys failing. The outer rings of the 7, 8, 9,

If a series resistor is found to be open-circuit (shows GR on one side but not the other), you can sometimes "short" or bridge the resistor to restore the path.

Secure the jumper wire flat against the board using UV-curable solder mask green oil or Kapton tape to prevent shorts when the metal domes are pressed down. Summary Diagnostic Checklist Broken Keys Common Root Cause Primary Hardware Solution All Keys Dead Water damage or CPU solder joint failure