I would recommend a brass wool type pad for cleaning the soldering iron
tip. Poke it in few times while it’s hot and it should come out shiny clean.
Filing is a bit drastic.
Don B.
Sent: Sunday, September 1, 2019 11:05 AM
Subject: Re: [korgpolyex] Late! install of v1.3 hawkmod in
ex800
i've got a kit with two ribbon with male DIL connectors at either end, one
for IC29, one for IC22.
then a plastic casing with 4 small ICs. i will have to go through the BOM
later and check off.
board is v1.3 - and i got it from you ages ago - Feb 2011 :-D only
8&1/2yrs to get round to this...
- - - - - - - - - - - - - - - -
DONE. dougie fresh you're on.
i cracked on in the meantime, cutting out the 28-pin DIL. boy, that IS a
messy job.
took great care with that - and i would say NOT to cut any pins themselves,
because
it doesn't leave anything to pinch with pliers as you desolder them.
cleaning out the holes was tricky, until i figured out the correct way to
do it.
i've learnt something today (please correct if wrong): desoldering
braid/wick:
you're supposed to use that with flux, aren't you? at least that's what
proved effective:
dip it in flux, and then when heated, the solder flows into the braid as it
sizzles.
this seemed to draw the solder out of the holes. completed with a little
poke with a
sewing needle. what the correct way to do this ?
that was actually my problem this morning/the other day: my soldering iron
was covered in carbon.
it needed flux and a bit of a clean (small metal file).
i think i need a bit of a tutorial about proper solng practice, tbh
;-)
new DIL back in, re-seated the old eeprom, and... it still works !
cleaner job this time (we won't talk about the other one, but it's ok, want
to leave that alone now).
so that's the mainboard modification completed
Q: what is the spare white header/connector? CN5A ?.