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MIB2 hardware fault NEC70F3488A
07-06-2021, 19:24 PM,
Post: #21
RE: MIB2 hardware fault NEC70F3488A
Finaly is powering on! But...

I bought another chip for different supplier and this time is a good one. Orange5 recognised it as 70F3488, bootloader writed succesful, now is powering on, fan spinning but bootlooping (i suppose this is normal). After 2-3 secounds is restarting.
Tried IPL mode but is still restarting.
Any ideea what to do next?
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08-06-2021, 21:27 PM,
Post: #22
RE: MIB2 hardware fault NEC70F3488A
The unit was restarting because my bench power supply was set to 1A  fail.

And again i manage to burn the chip tears ... but by doing that i found the cause why this unit got faulty.

The card edge connector where you plug LTE module is damaged, pin inside are bent and shorting.

Found that connector on RS UK and Farnel, part number HSEC8-120-01-SM-DV-A ( if anybody needs).


P.S: I will leave here a picture with 70F3488A programming pins (if anybody needs).


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