6300 перестают работать клавиши

[dominion]

Принесли тело. Через 2-3 минуты работы перестают работать клавиши. Реагирует только на кнопку вкл/выкл. Плата чистая, следов удара нет.

Логи

1

MCU SW : V 07.00 19-08-08 RM-217 (c) Nokia.
PPM SW : V 07.00 19-08-08 RM-217 (c) Nokia. I
Product : Nokia 6300
Prd.Code: 0537635
Bpr.Code: 0537040
Prod.Sn : CMG477592
HW Vers : 0614
EM RETU : 32
EM TAHVO: 53
RFIC Ver: 17211721
DSP Vers: ICPR61_08w10
IMEI :
SL Serv : SIMLOCK SERVER VERSION 63
SL Conf : 244-07-00000000000
SL Prof : 0000000000000000
SL Count: 00 00
BLK1= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
BLK2= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
BLK3= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
BLK4= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
BLK5= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
BLK6= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
BLK7= L1: OPEN L2: OPEN L3: OPEN L4: OPEN L5: OPEN
Provider: Nokia Test;Finland

Phone Type: RM-217 (Nokia 6300)
SW Version: V 07.00 19-08-08 RM-217 (c) Nokia.
Imei plain:
Product Code: 0537635
Battery voltage: 4703 mV, current: 110 mA
Language Pack:
- not available.

SIMLOCK seems to be valid
SUPERDONGLE_KEY seems to be valid
CMLA_KEY seems to be valid
WMDRM_PD seems to be valid
SIMLOCK_TEST passed
SECURITY_TEST passed


Imei net:
Version: SIMLOCK SERVER VERSION 63
Counter: 0/3, 0/10

CONFIG_DATA: 2440700000000000
PROFILE_BITS: 0000000000000000

BLOCK1: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN
BLOCK2: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN
BLOCK3: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN
BLOCK4: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN
BLOCK5: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN
BLOCK6: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN
BLOCK7: 1=OPEN, 2=OPEN, 3=OPEN, 4=OPEN, 5=OPEN

подскажите куда копать?