Service Forum

BillH · Last edited by BillH on Fri Dec 25, 2009 5:13 am; edited 1 time in total

There are two chips labeled 2402W on the MB, one near the chipset and one near a large Ricoh chip. I probed the one nearest the chipset for the dump. I used a driven circuit and r24c02.exe, base_address=$AE. The recovered user password was six characters, fc[three digits redacted]c. There was no administrator password. I entered the user password to boot the V505, access the bios, and clear all passwords.

Photo 1 shows the sewing needle probes Victor recommends for this tiny chip. Thanks Victor.

Photo 2 shows the driven circuit, copied almost verbatim from Raymond Kawakami's web page. Thanks Raymond.

Photo 3 shows most of the MB, with the probed chip circled in red.

Photo 4 is a closeup of the probed chip circled in red.

Photo 5 is the dump, with part of the password redacted.

Many thanks to the Allservice forum participants who laid the ground work for this recovery operation.

bob · Posted: Thu Dec 24, 2009 11:07 pm Post subject:

Thank you for this valuable input!

*Just a tought: you must redact the hexvalues too, if that really matters Surprised

Merry Christmas!

BillH · Posted: Fri Dec 25, 2009 5:17 am Post subject:

Thanks Bob. for waking me up. I most surely was asleep at the switch on that one.