ed.beer a écrit :
>
> How are the ROMS mounted ? Is it a solder job or clip in ?
>
If i remember well the EPROM IC (only one piece) is simply plugged in a
standard IC socket. Not the "zero insertion force" type with a clip but
a standard socket... Of course you don't need any solder. Just remove
gently the old EPROM using a little screwdriver as a lever on both ends
of the IC, take the new one and put it firmly at the same place.
However, be careful :
- of the mark on the IC plastic case showing the nr 1 pin . "Good"
sockets wear the same kind of mark or dot one one end, so take your time
and look carefully at the initial position. If it's in a wrong position
it does not work, but normally it does no harm to the EEPROM (supply and
input - output voltages are equal on most logic ICs). My advice : you
better do it right first..
- to put all the (40, if i remember well) pins in the holes of the
socket, push on both ends of the IC : don't miss a row of pins, don't
bend them inside or outside the socket and so on.... A little useful
trick : take the IC by both ends and bend (yes..) a little the pins
against some hard surface to get a 90° angle between the pins and the
case, the mounting will be easier.
- of ESD (electro static discharge) if you work in a cold and dry
atmosphere wearing nylon, Polartec or other synthetic clothes. This is
one of the terrors of CMos ICs...
Cheers.
J.F.
>
> --- In AN1x-list@yahoogroups.com <mailto:AN1x-list%40yahoogroups.com>,
> "millsmike36" <djmikemills@...> wrote:
> >
> > It solved my problem straight away and its not that difficult to do...
> >
> > took me longer to unscrew the screw ont he case than the upgrade
> >
> > --- In AN1x-list@yahoogroups.com
> <mailto:AN1x-list%40yahoogroups.com>, Peter Korsten <peter@> wrote:
> > >
> > > Op 10-1-2011 8:24, Uwe schreef:
> > >
> > > > My blip problem did not solve yet, but I found out, that it only
> appears, when a sound is selected, that uses both scenes. As far as
> only one scene is active, my AN1X behaves quite well.
> > > >
> > > > Any suggestions yet?
> > >
> > > Your AN1x is not going to die. This is a well-known issue, that
> can be
> > > resolved by installing an OS update. But this involves swapping
> chips,
> > > so it's perhaps not for everybody.
> > >
> > > - Peter
> > >
> >
>
>