12 May
2010
12 May
'10
10:47 a.m.
That's on the ToDo list. Unfortunately the ROM
extension location at A15
has no socket installed and all the holes are flowed over with solder. So
The PCB was probably wave-soldered with no socket in place. Seems
strange, on an experimental machine like this not to fit the expansion
socckets, but anyway...
I need to carefully solder-suck, solder-wick those
clean before I can
install a socket. Boards of this age are quite fond of letting the pads
loose when you heat them up so I need to do this slowly and carefully.
The best way I've found to do this is to hold or clamp the board
vertically, melt th solder with an iron on one side and suck with a
solder sucker from the other. It's not too bad doing it for a 40 pin
socket, it gets boring fast when you have to clear out 16 or 32 16 pin
locations for a memory upgrade (been there, done that, don't wear
t-shirts ;-))
-tony