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Did you have to remove a BGA though to fit this upgrade board? It's a pain to remove a BGA even with a proper SMD rework station. The empeg would definitely have to be sent off to get this upgrade done.
No, my SMT socket recognition skills aren't particularly well developed, but it isn't a BGA. Picture attached. The work was done at the time by Watford Electronics - who also produced the upgrade board. Looking at the picture now, I'm not that sure they had the best tools back then - looks to me like the card was reworked after assembly. The board replaced the 8MHz ARM2 with a 25MHz ARM3.
Edit: to clarify, the surface-mounted ARM2 on the main board is removed and replaced with the appropriate IC socket, into which the daughter card is plugged. This was all done by Watford Electronics. I assume they destroyed the ARM2 in the process of removing it (by cutting off all the legs and then desoldering the remains).
Edited by mdavey (15/10/2004 20:29)
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