Nokia 6131 self test

[alfon13]

Hi people I have 2 Nokia 6131 with the same problem: no backlight in lcd. I make self test with cyclone box and this is the result:

MCU Version V 06.10
MCU Date 16-02-07
Product RM-115
Manufacturer (c) Nokia.
IMEI 352257016796039
Mastercode 4756663120
IMEI Spare 3A25520761970603
IMEI SV 3325520761970603F7000000
PPM V 06.10, 16-02-07, RM-115, (c) Nokia. , C
PSN NBG514082
Product Code 0540576
Module Code 0202802
Basic Product Code 0526012
PSD 0000001D00000000
RETU 32
TAHVO 52
AHNE 11
HW 1009
RFIC 17201720
DSP dsp_mojito_05w46v48.1
Simlock Server SIMLOCK SERVER VERSION 63
Simlock Key 2440700000000000
Simlock Profile 8000000000000006
Simlock Key Cnt 0
Simlock FBUS Cnt 0
Simlock [1,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [1,2] State: OPENED Type: GID Data: FFFF
Simlock [1,3] State: OPENED Type: GID Data: FFFF
Simlock [1,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [1,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [2,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [2,2] State: OPENED Type: GID Data: FFFF
Simlock [2,3] State: OPENED Type: GID Data: FFFF
Simlock [2,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [2,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [3,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [3,2] State: OPENED Type: GID Data: FFFF
Simlock [3,3] State: OPENED Type: GID Data: FFFF
Simlock [3,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [3,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [4,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [4,2] State: OPENED Type: GID Data: FFFF
Simlock [4,3] State: OPENED Type: GID Data: FFFF
Simlock [4,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [4,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [5,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [5,2] State: OPENED Type: GID Data: FFFF
Simlock [5,3] State: OPENED Type: GID Data: FFFF
Simlock [5,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [5,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [6,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [6,2] State: OPENED Type: GID Data: FFFF
Simlock [6,3] State: OPENED Type: GID Data: FFFF
Simlock [6,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [6,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [7,1] State: OPENED Type: MCC-MNC Data: FFFFFF
Simlock [7,2] State: OPENED Type: GID Data: FFFF
Simlock [7,3] State: OPENED Type: GID Data: FFFF
Simlock [7,4] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Simlock [7,5] State: OPENED Type: IMSI Data: FFFFFFFFFFFFFFFF
Selftests to proceed: 23
Passed ST_EAR_DATA_LOOP_TEST
Passed ST_SIM_CLK_LOOP_TEST
Passed ST_SIM_IO_CTRL_LOOP_TEST
Passed ST_SLEEP_X_LOOP_TEST
Passed ST_UEM_CBUS_IF_TEST
Passed ST_KEYBOARD_STUCK_TEST
Passed ST_CAMERA_IF_TEST
Passed ST_BACKUP_BATT_TEST
Failed ST_LPRF_IF_TEST
Failed ST_LPRF_AUDIO_LINES_TEST
Passed ST_CURRENT_CONS_TEST
Passed ST_RADIO_TEST
Passed ST_BACKLIGHT_TEST
Passed ST_SIM_LOCK_TEST
Passed ST_SECURITY_TEST
Failed ST_BT_WAKEUP_TEST
Passed ST_IRDA_LED_STRESS_TEST
Passed ST_HOOKINT_TEST
Passed ST_TAHVOINT_TEST
Passed ST_SLEEPCLK_FREQ_TEST
Passed ST_BTEMP_TEST
Failed ST_BT_SLEEP_CLK_TEST
Passed ST_EXT_DEVICE_TEST
Selftests done, Tests total: 23, Tests passed: 19, Tests not passed: 4

there are 4 errors but i don´t know where. what is happend in board?
please help!!