принесли аппарат с битым дисплеем, заменил lcd далее сеть, заменил N7520 и N7540 ничего
вот результат теста
Код:
Phone Type: RM-566
SW version: V ICPR82_09w39.1 06-10-09 RM-566 (c) Nokia 

ID        Test name                   Startup   Result              
15   SLEEP_X_LOOP                  N          !NOT EXECUTED(03)
46   UEM_CBUS_IF                   N          !NOT EXECUTED(03)
3    EAR_DATA_LOOP                 N          !NOT EXECUTED(03)
12   SIM_CLK_LOOP                  Y          PASSED(00)
33   SIM_LOCK                      N          PASSED(00)
93   SECURITY                      N          PASSED(00)
90   PWR_KEY                       N          !NOT EXECUTED(03)
2    CURRENT_CONS                  N          !NOT EXECUTED(03)
96   HOOKINT                       N          !NOT EXECUTED(03)
101  BTEMP                         N          !NOT EXECUTED(03)
8    MBUS_RX_TX_LOOP               Y          PASSED(00)
23   KELVIN_BATVOLTAGE             N          !NOT EXECUTED(03)
19   KELVIN_VIBRA                  N          !NOT EXECUTED(03)
26   KELVIN_CAPACITOR              N          !NOT EXECUTED(03)
29   KELVIN_MISC                   N          !NOT EXECUTED(03)
31   KELVIN_CHARGING               N          !NOT EXECUTED(03)
27   KELVIN_AUDIO                  N          !NOT EXECUTED(03)
116  KELVIN_XEAR                   N          !NOT EXECUTED(03)
32   AMB_LIGHT_SENSOR              N          !NOT EXECUTED(03)
34   USB_CHARGING                  N          !NOT EXECUTED(03)
117  DIGIMIC                       N          !NOT EXECUTED(03)
222  LED_CONTROLLER                N          !NOT EXECUTED(03)
128  CDSP_SLEEPCLOCK_FREQ          N          !NOT EXECUTED(03)
86   CDSP_RF_BB_IF                 N          !NOT EXECUTED(03)
83   CDSP_RF_SUPPLY                N          !NOT EXECUTED(03)
85   CDSP_TX_IQ                    N          !NOT EXECUTED(03)
74   CDSP_TXC_DATA                 N          !NOT EXECUTED(03)
79   CDSP_RX_PLL_PHASE_LOCK        N          !NOT EXECUTED(03)
80   CDSP_TX_PLL_PHASE_LOCK        N          !NOT EXECUTED(03)
75   CDSP_WCDMA_TX_POWER           N          !NOT EXECUTED(03)
81   CDSP_RX_IQ_LOOP_BACK          N          !NOT EXECUTED(03)
77   CDSP_GSM_TX_POWER             N          !NOT EXECUTED(03)
7    KEYBOARD_STUCK                N          !NOT EXECUTED(03)
21   LPRF_IF                       N          !NOT EXECUTED(03)
22   CAMERA_IF                     N          !NOT EXECUTED(03)
37   SEC_CAMERA_IF                 N          !NOT EXECUTED(03)
44   LPRF_AUDIO_LINES              N          !NOT EXECUTED(03)
59   MAIN_LCD_IF                   N          !NOT EXECUTED(03)
71   BT_WAKEUP                     N          !NOT EXECUTED(03)
91   USB_LOOP                      N          !NOT EXECUTED(03)
42   RADIO                         N          !NOT EXECUTED(03)
после замены N7520 появился значек 3g... думаю трещина в плате