Williams (Euro) Joust: a close encounter with the Flying Elite

[level42]

Buy a JROK Multi-Williams board

[Superully]

probably a good idea, unfortunately this doesn't work for joust 2 (vertical orientation)!

[level42]

Totally different hardware too so impossible....

[baritonomarchetto]

Buy a JROK Multi-Williams board

Thanks for the idea, but it's the most expensive way (and i am a MAME fan )

No ideas on how to let this board work? 

[baritonomarchetto]

A couple of new images 







YES! IT'S THE "EVERITHING IS WORKING FINE" ZERO 

and...



 

I had a little crimp to the connector from the CPU board (it was suggested to me on KLOV forum) AND i burned a new ROM 6 (fortunately i had a spare 2732 from another board. I don't know which of the two operations lead to the result, but actually i don't want to "wake up the sleeping dog" reseating the old ROM

OK, the new problem (so close, but so far): the game doesn't start after the splash screen... it gives me this image on the screen



...and doesn't start... what's the prob now? consider that i have not the batteries on the cpu...

tha-thanks!! 

[Superully]

don't you have those service switches to "zap" through the bookkeeping menu? without pressing the right "combination" on those switches and without the battery, you won't be able to leave that screen - at least that's how defender is set up!

[level42]

Yup, I remember you zapped through it in some excitement when I had installed the back-up battery on your Defender board Ully.....and I was totally unaware because I didn't know the heck what it was all about 

Install a Lithium "button" battery on the board baritonomarchetto and you´ll be ready to play !

Congrats, love to see an original board/set working !

[Superully]

I had a little crimp to the connector from the CPU board (it was suggested to me on KLOV forum)

perhaps i should give that CRIMP to my joust 2 connectors as well. i also get the ZERO in the LED display, but the game doesn't even start the rom test

[baritonomarchetto]

One step further: i have removed the old batteries older... now i must find a CR2032 and holder...

[baritonomarchetto]

Dudes, today i installed a cr2032 battery, but i am still missing something...

I had to install the battery without holder (i made the soldering directly, but firmly, on the battery) (notice that the pcb is upside-down and only the black cable coming from the positive hole and going to the battery is connected)



Even if the 3 V are supplied, nothing changes: if i restart the machine, i have the bookeeping reset and the game doesn't start.

In addition surfing the "advance" menu, i have this:



... maybe some wiring is missing? I have not connected the switching on the front door and the back door, so the message sounds odd to me...

thanks for the help  

EDIT: my wiring was missing the "memory protect interlock" connection from the CPU board to the coin door: when the coin door is open, that switch is open, when the coin door is closed, the memory protect connection is grounded...

The game shows the high score table for a second, then restart... i have checked the voltage supplied and it's ok (5V).

[level42]

 

I hope the battery is still working because they can't stand a load of heat for very long....soldering batteries is generally not recommended.

[baritonomarchetto]

I know it's not a state-of-the-art work, but i had no choice. Anyhow, the 3.1V can be measured between the terminals, so it is still working.

I read somewhere that these boards have a very wide range of voltage functionality, but are very selective: some board works with less than 5 V, others with up to 5.3V. I checked all the range my switching can give me (4.8 to 5.4V) but i still have the reset (and that cmos error when the advance test is performed).

Don't know what to do now   

[Etienne MacGyver]

dont you have a old pc motherboard around ?

last week i cut out this battery holder when i had an old MB

[level42]

The original Williams battery holders are C-R-A-P !

Replacing it with a lithium battery is very smart because it will be good for at least 10 years. And won't leak, like regular batteries do.

I prefer to use a holder though

[baritonomarchetto]

I have substituted the previous bad-to-see work using an home-made holder. Aestetically is better, but the functionality doesn't change: the board resets when the "Daily Buzzards" is shown.

I made almost everithing in my hands (something more considering that i have bought an EPROM programmer). I have no more resources, maybe i should "surrender to the dark side of the (MAME) force"