Here's a solution for Nokia 5630 xpressmusic with anot working keypad and music player backlight LED's. This solution shows some simple tips on how to fix the keypad LED failure.
On 5630 the keypad and music player LED's were all mounted on the keypad flex matrix. You may first check the keypad flex for possible damaged, then each of a corresponding LED by using a multimeter to determine if it's been already busted or damaged.
If seems that all the LED's were all working and the flex is good. You may then refer to this solution below and locate this particular components for check-up and connection tracing procedures.
You may then check the corresponding components such as the filter coil, a diode and capacitors in the circuit., replace it if found faulty or damaged. You may also check the 3.7 volts battery voltage (VBAT) across the filter coil. Then trace the LED supply voltage connection line paths from the keypad pin connector through to the capacitors where it is being connected.
The music player LED's were driven by and LED driver chip, you may just try to replace the said driver IC for possible damaged if the music player LED's won't or doesn't light up.
On 5630 the keypad and music player LED's were all mounted on the keypad flex matrix. You may first check the keypad flex for possible damaged, then each of a corresponding LED by using a multimeter to determine if it's been already busted or damaged.
If seems that all the LED's were all working and the flex is good. You may then refer to this solution below and locate this particular components for check-up and connection tracing procedures.
Nokia 5630 Keypad and Music Player backlight LED Solution
You may then check the corresponding components such as the filter coil, a diode and capacitors in the circuit., replace it if found faulty or damaged. You may also check the 3.7 volts battery voltage (VBAT) across the filter coil. Then trace the LED supply voltage connection line paths from the keypad pin connector through to the capacitors where it is being connected.
The music player LED's were driven by and LED driver chip, you may just try to replace the said driver IC for possible damaged if the music player LED's won't or doesn't light up.
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