henrydudak
01-17-2003, 07:32
Hi,
I need a scheme for my Alcatel BE4 or service manual, please.
I can't switch on my BE4 from SLEEP-mode or Flash with cable.
Voltage for CPU and 32 kHz (SLEEP) is OK, but after press power-buton voltage 3.3V isn't on PCB test-point (second power supply - for FLASH, RAM etc.), only pulses HI-5 ms : LOW-250 ms.
I was try replace the IC (BGA) for power (Texas Instruments DSP - see PCB BE4 (http://www.inside-gsm.com/Alcatel/OT_302/Inside_OT_302/Micro_side_description_OT_302/micro_side_description_ot_302.html)) with a hot-air station and a kit for replace BGA. But no effect.
Can you help me, please?
I'm sorry, my english isn't very good.
Best regards,
Henry
I need a scheme for my Alcatel BE4 or service manual, please.
I can't switch on my BE4 from SLEEP-mode or Flash with cable.
Voltage for CPU and 32 kHz (SLEEP) is OK, but after press power-buton voltage 3.3V isn't on PCB test-point (second power supply - for FLASH, RAM etc.), only pulses HI-5 ms : LOW-250 ms.
I was try replace the IC (BGA) for power (Texas Instruments DSP - see PCB BE4 (http://www.inside-gsm.com/Alcatel/OT_302/Inside_OT_302/Micro_side_description_OT_302/micro_side_description_ot_302.html)) with a hot-air station and a kit for replace BGA. But no effect.
Can you help me, please?
I'm sorry, my english isn't very good.
Best regards,
Henry