Strange problem on A300 - GSM-Forum

sat · 07-11-2002, 00:31

I got A300, that doesn't power on. Phone is not broked, not fallen into water. But when I unsoldered eeprom IC, it powered on!!!!
I tried to place another eeprom chip from other working A300, but it doesn't worked.
I unsoldered eeprom, and phone is working, charging, even calling and receiving calls!!!
I can't only write into phone memory phonebook.
Eeprom is Atmel, 32 kb. I cloned eeprom from another A300 into Ericsson's T28 eeprom IC, but it didn't worked all the same.
what could be a problem to this strange problem??

sat · 07-12-2002, 23:00

so nobody met with such a problem?

ppl · 07-19-2002, 15:53

Strange problem? try another IC - may-be your chip from Ericsson is hardware broken? Or reflash phone with this dump.

WBR:
Partyman

nab · 07-20-2002, 23:51

1 make sure pin 1 is the right way round ..
2 check for components that may have moved causing a short
3 check the solder pads for the errpom are still there

07-11-2002, 00:31	#1 (permalink)
sat Freak Poster Join Date: Aug 2001 Location: GSMLAND Posts: 479 Member: 5764 Status: Offline Thanks Meter: 2	Strange problem on A300 I got A300, that doesn't power on. Phone is not broked, not fallen into water. But when I unsoldered eeprom IC, it powered on!!!! I tried to place another eeprom chip from other working A300, but it doesn't worked. I unsoldered eeprom, and phone is working, charging, even calling and receiving calls!!! I can't only write into phone memory phonebook. Eeprom is Atmel, 32 kb. I cloned eeprom from another A300 into Ericsson's T28 eeprom IC, but it didn't worked all the same. what could be a problem to this strange problem??

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07-12-2002, 23:00	#2 (permalink)
sat Freak Poster Join Date: Aug 2001 Location: GSMLAND Posts: 479 Member: 5764 Status: Offline Thanks Meter: 2	so nobody met with such a problem?

07-19-2002, 15:53	#3 (permalink)
ppl Freak Poster Join Date: Oct 2001 Location: bootcore Age: 49 Posts: 258 Member: 7069 Status: Offline Thanks Meter: 6	Strange problem? try another IC - may-be your chip from Ericsson is hardware broken? Or reflash phone with this dump. WBR: Partyman

07-20-2002, 23:51	#4 (permalink)
nab No Life Poster Join Date: Apr 2001 Location: UK and PAKISTAN Posts: 643 Member: 4315 Status: Offline Thanks Meter: 1	1 make sure pin 1 is the right way round .. 2 check for components that may have moved causing a short 3 check the solder pads for the errpom are still there