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- From: mho@uniware.de (Michael Hopp)
- Subject: Re: Soldering to the shifter ?
- Organization: UniWare Computer GmbH
- Date: Thu, 19 Nov 1992 15:38:16 GMT
- Message-ID: <1992Nov19.153816.28755@uniware.de>
- X-Newsreader: Tin 1.1 PL4
- References: <Bxx0y7.J64@dcs.ed.ac.uk>
- Lines: 23
-
- cdw@dcs.ed.ac.uk (Christopher Walton) writes:
- : I am considering doing a memory upgrade on my STFM and it will involve
- : soldering a socket on top of my shifter. Can anyone tell me how vulnerable
- : this chip is as I am not very experienced with a soldering iron ...
- :
- since the shifter is quite expensive, you should consider to get your
- connections from a socket between the old shifter socket and the shifter
- itself or from a board whith two pin-lines (?) on the downward and
- a socket for the shifter on the upward side, as i did for my memory upgrade.
-
- you probably need to re-bend the shifter's shielding cover then.
-
- of course this won't do if your shifter isn't socketed yet. in this case
- i would adwise you to first get some solder on the socket and shifter pins
- seperately where they later touch each other. be careful on the shifter,
- touching the pins only for 1 sec., allowing them to cool a few seconds
- inbetween and work in an nonadjecent order.
- so prepared, when you get the socket in place, the iron needs a shorter
- time to establish a connection because the solder only has to melt
- together and not to coat both surface then, thus less heat for the chip.
-
- and be sure to make the +5V & ground connections thick wires, b/c
- memory chips need a high current at peak levels.
-