Since lewisspearing solved his problem (after having tried almost any of the "wrong" approaches available), only two little indians remain:
Please, please, PLEASE, DO READ these:
BEFORE asking the same, SAME, SAME, SAME, ALREADY ASKED n times questions.
Particularly @Lupi , do you really think that IF serial mices had a rs-232 to TTL converter capable of 38400 b/s:
- we wouldn't ALREADY have serial mices among the possible source for the thingy
- the serial for the mouse would have been set at 1200 b/s?
If you want, you can also try:
- an AC/DC converter from your old Valve Radio
- a data cable from your old PSION
- direct connetion to mains (either 110 or 220 V Ac will do )
Comeon, READ the actual specs, you can build your own and in the thread there are several different schematics, but you want a RS-232 to TTL converter (or a USB to TTL converter AND NOT *anything* that comes with a DB9 or *anything* that crosses your mind or *anything* "random" that you happen to have lying around)
Particularly @iaconelli12, do you really think that IF a PCB swap was possible we wouldn't already have it listed among the possible ways.
BTW exactly one post above yours it is clearly written how PCB swapping, beside NOT working may also break the hard disk(s) for good.
Please also note how at the top of this page there is a nice message saying:
If you have questions about Seagate 7200.11, do read the READ_ME_FIRST, then read the FGA. If your questions remain unanswered after reading those two stickies, then post.
Is there a particularly difficult part in the above that you have problems understanding?