On Sun, 26 Dec 2010 21:26:37 -0800 (PST), kreed
wrote:

On Dec 27, 1:21*am, Andy Bilton Andy.Bilton.
wrote:
Hi all,

First off Merry Christmas 2010 to all on the forum!

I have a problem with my NSM Peformer Classic. *Comes up with error
messsages on switch on so I program it to fix the error only problem is
when machine is switched off and back on again machine seems to 'forget'
that I fixed the problems. *Also machine can't seem to 'remember' that I
have it programmes for freeplay.

I've done nothing drastic to it so I'm figuring that something's wrong
with the memory on the machine. *I can find no battery so I'm figuring
this type of jukebox does not have a battery backed up memory but I
can't find anything about memory in the manual (which I have).

Does anyone have any ideas what kind of memory system the NSM Performer
Classic uses and how I can resolve issues with it please?

Many thanks

Andy

--
Andy Bilton

Typically a 5101 or a 6116 / 6264 Ram are used in games / jukes for
this purpose, but I don't know what NSM use.


If there is no battery or chip as listed above - it could have an "e
squared" memory. These would typically be an 8 pin IC. These are
FLASH type memory, and dont need a battery. They do wear out after
about 10,000 writes (especially older ones) though and start to fail.
These were also used on "off road" and "Lethal Enforcers" games and I
have replaced this IC on both these games due to failure. (off road
died as in one location they were forever setting new high scores and
we believe this is what nuked the chip)

Considering that if it holds coin and popularity data - its extremely
likely that these RAM locations would be incremented (written to)
every time a coin is inserted, or a selection is played, or a setting
is changed. If there is an "hours on" or "number of times turned on"
function - then these would be written in addition every hour or every
time the machine is turned on. It is also possible that multiple
data locations are changed with each operation (several writes) if
they have a checksum or other method of detecting corrupt data.


The other alternative that was popular was a "Dallas" chip.
These were a rectangular block that sits higher than a ROM and had
battery and ram enclosed inside this block. If faulty you will likely
need a new one as the battery is sealed inside. They should have
"Dallas semiconductor" written on them.

You may be able to cut the top of the thing open and find and replace
the battery - (from memory its in the upper part of the chip) but
there is a risk of rendering it unusable.


The Performer series have a NVRAM chip with integral battery. It
sounds like this battery has come to the end of its life. This is
more and more common for these jukes at the age they are. It needs to
be replaced (note you will have to reprogram when you put the new one
in). It is located on the Centrale board (front of stack on back wall
of juke). I don't remember the location number, but is should be
obvious as it is a "thicker" chip than all the others.

Happ Controls have these(look under jukeboxes/parts/NSM, etc.), as
will any other distributor that handles NSM parts. I believe it is
the same chip for ES IV and ES V series (Classics are ES V if I
recall). ES IV have white player boxes and ES V have black player
boxes.

I am not aware that anyone has successfuly replaced a battery in these
chips, but somebody may have. The new replacement costs about $60 to
$70.

On location, these jukes can be left on 24/7, until a new NVRAM chip
can be installed, but this may not be a viable option in home use.

Irwin