Re: I need help with a STARGATE I just acquired

Based on questions I have asked here, and searches of the archives, I
have come up with the following treatment for williams boards I work
on. Keep in mind this is what I do and would do if I owned your
boards. I cannot and will not accept responsibility or liability for
anyone doing what I would do.

Order a 68B09EP [6809] processor and set of 30 4164 RAMS from Bob
Roberts, Jameco, or Unicorn electronics. http://www.robotron-2084.co.uk/techwilliams4164.html
Buy a 4164 adaptor from Bob Roberts. Note the position of the decoder
and ROM chips. Carefully pop all socketed chips, keep the decoders &
ROMS, throw the rest away. Get some very fine emory paper and lightly
rub down all header pins on top of the board. Run the board set
through the dishwasher no soap no dry cycle; run the dishwasher empty
with soap after this. While the boards are still wet, rinse with
distilled water. Dry with a hair dryer and set aside in a warm dry
place overnight. Break out your soldering iron; reflow solder on the
power connections. Let cool. CONNECT THE POWER ADAPTOR AND WARNING
LABEL YOU BOUGHT FROM Bob Roberts! Set your 4164 RAM, decoder chips
and ROMS. Install and power up your boards.

Good luck,
Christian


On Aug 25, 3:48 pm, Nacman <nacman...@xxxxxxxxx> wrote:
On Aug 25, 2:01 pm, telcodev <telco...@xxxxxxxxx> wrote:





Mark Capps stocks the 6154, a drop in replacement for the 5114:http://www.arcadechips.com/product_info.php?products_id=29

Bob Roberts does as well.http://www.therealbobroberts.net/parts.html#ICs

Jameco stocks socket for these 18 pin dips.https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langI...

On Aug 25, 6:24 am, Nacman <nacman...@xxxxxxxxx> wrote:

On Aug 25, 8:53 am, protoVision <sirus.co...@xxxxxxxxx> wrote:

On Aug 25, 7:11 am, Nacman <nacman...@xxxxxxxxx> wrote:

On Aug 25, 4:27 am, "joe" <Joe...@xxxxxxxxxxx> wrote:

Reset to factory defaults, it should help.

Joe

"Nacman" <nacman...@xxxxxxxxx> wrote in message

news:1188024904.981167.320940@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

On Aug 25, 2:43 am, Nacman <nacman...@xxxxxxxxx> wrote:
I just got a standup williams STARGATE and it has some issues with
it's setup. When I go into the setup mode, I change the settings to
give me three ships for .25 and seven ships for .50 I also set it up
to allow to warp with 4 men, and warp till level 10. I change other
thigs as well, that on initial powerup are messed up.

While in the setup screen as I change some values, other values change
too, but get spurious characters in their fields, not numbers like
they are supposed to be. Other times, no spurious characters show up,
but regardless, when I attempt to advance out and save the setup, it
reports that defaults have been loaded and t all goes back to one ship
for one play, no warp, no inviso.....Sometimes I see SMOS write
failed, coin door must be ope or something to that effect....Door is
open though....Where to start looking...

I am good with identifying board level components, but I am not
trained in the repair of that stuff. I don't mind doing it though, an
opportunity to learn something...

Please help me obi-wan......

Nacman

LET ME ADD, this board has had a lithium battery upgrade on the
board....I have been doing some reading and have a few things to
check, but in general is this an expensive repair?- Hide quoted text -

- Show quoted text -

It resets itself to what it thinks IS factory defaults everytime I go
into setup and then advance out of it.

It wont SAVE those settings, and the setup screens get contaminated
with weird characters and I sometimes get a CMOS write failure...
I don't think that is the solution?

I may pull the battery and let it sit for a while....hope it is that
simple
doubt it though

-Nac- Hide quoted text -

- Show quoted text -

You might have a bad CMOS RAM chip. If the ram chip has never been
replaced than you will have to unsolder it from the board. If you end
up doing that then I highly recommend you put a socket down first and
then put a RAM in it.- Hide quoted text -

- Show quoted text -

Ok. Getting somewhere. :) Is that C1? What replacement would you
suggest? have any part numbers for the socket and chip? Would you
replace it with nvram?

-Nac- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

Thanks Telcodev,

I am ordering them straight away. I am going to take this time now to
remove the boards and clean them where I can.
Do they make a procuct I can use to clean these boards, ie like give
them a bath so to speak?
This machine appears to have all the original parts and I believe it
also has all the original dust along with all
the extra dust it has collected over the years. The boards are caked
up with it, and I am not going to power it on
anymore till I remove all I can. I think I will take this opportunity
to paint the cabinet as well while everything will be out of it.

I am actually looking forward to trying to make this as new looking as
possible. any and all suggestions welcome!!

-Nacman- Hide quoted text -

- Show quoted text -


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