Jack Burton's adventures in Arcade restoring

Jack burton · 11-10-2019 2:36pm #1

Figured I'd start a thread for all my repairs with these new machines. Since I don't want to clog up any other threads and I'll be needing some help from the experts here.

So the pinball is pretty much good. I know what I have to do with that.

HoTD 2 has monitor issues and the guns not working. I didn't get any pics of the monitor so that will wait. The game is starting up and gameplay seems good

The naomi crazy taxi is where the bulk of this thread will be based I think. Here's a few pictures to show you what I've found so far after a quick look last night

geotrig · 11-10-2019 2:47pm

Wonder why the i/o was placed there

iirc if its an i/o error the screen normally says so .
Are you getting any error code 03 04 ? they are normally the board malfucntion codes.

you should be able to get into the test menu from the credit board and can run checks on the ic's etc there.

Sometimes it can be hard to get the rom and board to fuse correctly ,also worth booting with out a cart

geotrig · 11-10-2019 2:49pm

Jack burton wrote: »

Figured I'd start a thread for all my repairs with these new machines. Since I don't want to clog up any other threads and I'll be needing some help from the experts here.

So the pinball is pretty much good. I know what I have to do with that.

HoTD 2 has monitor issues and the guns not working. I didn't get any pics of the monitor so that will wait. The game is starting up and gameplay seems good

]

It Could be the game board failing here as well so dont be too quick to rule it out, ... at least you have another std naomi in the crazy taxi that you can swap in to test to monitor and be sure at least you kow ot boots to screen.

11-10-2019 2:57pm

Although I knew HOTD was on the dreamcast it never crossed my mind that the arcade version would be naomi hardware also.

KeRbDoG · 11-10-2019 2:59pm

Second pic, someone hack in a ATX PSU to replace the orignial PSU?
Third pic, indeed strange place for the I/O board. Thats usually just under the control panel unless its different for driving panels.

For the error - as geotrig, go to the test menu and check the game ICs. If that checks good, try booting the Naomi without the game board inserted to see if the error remains. They usually give error codes, maybe an updated BIOS would give that.

BrownFinger wrote: »

Although I knew HOTD was on the dreamcast it never crossed my mind that the arcade version would be naomi hardware also.

HOTD 2 was Naomi, HOTD 1 was Sega Model 2 I believe

11-10-2019 3:11pm

KeRbDoG wrote: »

Third pic, indeed strange place for the I/O board. Thats usually just under the control panel unless its different for driving panels.

No its under the CP on my 18wheeler.
The 18wheeler has a different wheel setup too.

geotrig · 11-10-2019 3:16pm

KeRbDoG wrote: »

Second pic, someone hack in a ATX PSU to replace the orignial PSU?
Third pic, indeed strange place for the I/O board. Thats usually just under the control panel unless its different for driving panels.

For the error - as geotrig, go to the test menu and check the game ICs. If that checks good, try booting the Naomi without the game board inserted to see if the error remains. They usually give error codes, maybe an updated BIOS would give that.

HOTD 2 was Naomi, HOTD 1 was Sega Model 2 I believe

The problem with hotd2 is its a slightly different setup .i.e there is something extra somewhere on either "cart" or "mainboard" i cant remember exactly and unless something changed since i last looked, which is quite possible, it wasnt neetbootable.

"" used as it came in its own cage*

Jack burton · 11-10-2019 3:16pm

Thanks lads. I'll hopefully get around to giving those a go tonight. Didn't even cop HOTD 2 being Naomi aswell.

Any idea why those parts were wrapped up in paper towels?

geotrig · 11-10-2019 3:17pm

Jack burton wrote: »

Thanks lads. I'll hopefully get around to giving those a go tonight. Didn't even cop HOTD 2 being Naomi aswell.

Any idea why those parts were wrapped up in paper towels?

probably to stop it shorting on any metal

Jack burton · 11-10-2019 3:18pm

An elegant and practical solution

KeRbDoG · 11-10-2019 3:20pm

Jack burton wrote: »

An elegant and practical solution

MacGyver'd

geotrig · 11-10-2019 3:28pm

you could always buy a chihiro and play(nb) hotd3 ,vC 3 and i presume ghost squad(never played it so no idea how compatible it is )as well

and use it for outrun 2 on the crazy taxi cab when not being used !!

if you are feeling flush ,that is*

actually ,i wonder do they have a setting for the mirror :think:

Jack burton · 11-10-2019 10:25pm

OK so got a few mins to do some testing tonight.

Getting error 03 on the board when the game is out. Game in, just says error "board malfunctioning". Ran the ROM and RAM tests on the service menu and things were all good.

That is a ATX PSU hacked into the cab.

So where do I go from here?

geotrig · 11-10-2019 10:43pm

Jack burton wrote: »

OK so got a few mins to do some testing tonight.

Getting error 03 on the board when the game is out. Game in, just says error "board malfunctioning". Ran the ROM and RAM tests on the service menu and things were all good.

That is a ATX PSU hacked into the cab.

So where do I go from here?

OK check the voltages Naomi are quiet sensitive at times especially on the 3.3 v and 5 v

I would suggest scanning the pins on both mb and cart as they can get bent can't remember what error that gives though.

Then next step would clean contacts and screw cart in.... Sometimes this makes a difference although again not sure if this gives error 3

It might also be worth getting a new bios programmed as I think this can throw the same error.

geotrig · 11-10-2019 10:48pm

Also you could grab the hotd2 mb and swap in the bios and cart at some point and it it should work.. Hotd2 bios is unique to that game only.

Jack burton · 11-10-2019 10:57pm

cool man, i'll get going on that soon as I can.

The crazy taxi board was screwed in originally.

looking around now and found this

"Mecha187 is spot on. When there is no cartridge plugged in the Screen should read "Error 01.
THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD". If it still reads "error 03" then the serial eeprom has lost it's memory or it cannot give out the serial #. I only seem to have this problem on the Mobo fitted with a X76F100 at Location IC64. Later versions have a 93C46 fitted and there is a place for the X76F100. My burner cannot read the X76F100 and it is protected. I usually replace the chip with one from my scraps,cap the Power Supply set the voltages accordingly."

https://forums.arcade-museum.com/archive/index.php/t-276679.html

Had a read through that and looks like a mobo problem.

BGOllie · 11-10-2019 11:08pm

looking online for error 03 it could be the cart itself alright or the bios. Check the eprom against mame and try the hotd2 cart in there too

geotrig · 11-10-2019 11:12pm

Yeah I knew there was something ic wise that gives trouble but couldn't remember what and where it is.
The problem with Naomi's is sometimes you can get errors for all different reasons .... Im almost certain I pulled error 3/4 for some reason and never got it again...

As above the handy thing is you have another mb that you can try test with as well

geotrig · 11-10-2019 11:17pm

It's a pity the Naomi forums are offline cause the info on there was invaluable.

80s Synth Pop · 11-10-2019 11:35pm

If you are in Dublin I can loan you my naomi2, power supply, universal bios and net dimm with all the games including crazy taxi for troubleshooting if it would help.

Jack burton · 12-10-2019 7:11am

Thanks dude, I'm down in Waterford. Probably won't be back up in the big smoke till November

BGOllie · 12-10-2019 11:23am

80s Synth Pop wrote: »

If you are in Dublin I can loan you my naomi2, power supply, universal bios and net dimm with all the games including crazy taxi for troubleshooting if it would help.

any links for setting up one of these ? might be looking at this option very soon myself too

KeRbDoG · 12-10-2019 12:17pm

BGOllie wrote: »

any links for setting up one of these ? might be looking at this option very soon myself too

Many guides out there, this one looks good - there are other ways to feed in the images. Ensure you get a NetDimm and not just a Dimm.
http://8bitplus.co.uk/projects/netboot-sega-naomi-netdimm/

TechnoFreek · 12-10-2019 2:43pm

I have the netboot setup. A very elegant solution.

80s Synth Pop · 13-10-2019 12:22am

A few items are required. Universal bios, netdimm, zero key, a pi3, lcd display with button selection kit, network switch or crossover cable and piforce tools software. Not a whole lot to it if you get a pre configured image for the pi.

Hardest part is obtaining the netdimm for a decent price.

Side by side on the cabs though it's impossible to tell the difference between the m2 emulator on a pc with good graphics card vs the real naomi2 board running gdrom/carts/netdimm. Net dimm may not be worth it imho. Same with the darksoft cps2 multi. Cps2 on groovymame is hard to distinguish from the real thing.

A good similar type of solution is the darksoft stv multi cart as there is not really any decent stv emulation. That one is definitely worth it.

13-10-2019 2:45am

Lcd is not required you can use a web interface to load the games, joerg (arcademodnios.com) also has a dedicated board already setup that does the same job it of course it’s a more expensive option.

TechnoFreek · 13-10-2019 9:20am

Yeah. I connect my to pi WiFi and select games through phone browser.

Preconfigured images are out there.

I got my netdimm 256, naomi 1 and capcom io for very cheap off yahoo japan. Took a punt on Junk status.

Try get 512mb netdimm if you can.
Naomi 2 as well but they can be pricey.

That will allow you to load full naomi library.

KeRbDoG · 13-10-2019 12:31pm

TechnoFreek wrote: »

Yeah. I connect my to pi WiFi and select games through phone browser.

Preconfigured images are out there.

I got my netdimm 256, naomi 1 and capcom io for very cheap off yahoo japan. Took a punt on Junk status.

Try get 512mb netdimm if you can.
Naomi 2 as well but they can be pricey.

That will allow you to load full naomi library.

Did you get the Naomi reset setup with the image/directions I sent you? More importantly, anymore games?

TechnoFreek · 13-10-2019 1:04pm

Sure did. Thanks!

Got all the naomi games working fine. The Atomiswave ones over netboot are a bit more finicky. Tend to black screen a lot which is a voltage thing I believe. Never bothered pursuing that

Jack burton · 14-10-2019 11:30am

So got a chance to test the HOTD 2 game board in the crazy taxi machine. Same error 03 board malfunction.

After reading that there is a chip in the Naomi mobo that blows if the 5v jumps over 5.15v and seeing that ATX PSU hacked into the cab, along with all the boards wrapped in paper towels. Makes me think I might be better off sourcing a new mobo and psu?

Must have been a problem with the PSU originally for all that to happen

14-10-2019 12:26pm

ATX Power supply should work fine in there, did you measure the voltages? I would get another motherboard first and a cheap cart and swap and change to eliminate the cart/mobo

Jack burton · 18-10-2019 2:10pm

Didn't get a chance to do any voltage tests yet. I should have an hour tonight though.

Just going to get a cheap Naomi 1 motherboard next week. If what I think it's after burning out on it than the only repair I can see is to get one from a Naomi board so might aswell just go the whole hog and get a working one.

Definitely want to clean up the ATX hack and relocate some of those boards that are just ****ed in there anyway at all

beejee · 18-10-2019 4:16pm

You could try that yaton6262 guy on eBay, usually has a good selection on naomi stuff

Jack burton · 26-10-2019 2:13pm

Messaged him and waiting to hear back.

Tested the voltages and getting a clean 5v output. So I guess the hacked in PSU is working ok. Tbh im just going to hang on and get a working motherboard, problem is with the serial number not being able to be read on the motherboard so could be a number of things

The Last Bandit · 26-10-2019 7:54pm

I've a Sun Naomi PSU here you can have, probably have some cable looms as well from when I stripped mine out to Mame it.

Jack burton · 28-10-2019 8:28pm

Be great dude, thanks

Jack burton · 31-10-2019 9:15am

So I got some time I get stuck into the Naomi last night.

Battery & fans are good and no caps look bad to me. Getting a new EPROM burnt so hoping thats the problem.

Sending the HOTD2 chassis off to grant for a service and recap.

There's the current picture, it's like a white later of static over the image, anyone see anything like this before? Just thought better to ask before spending the money sending it over for him to tell me it's ****ed or something

geotrig · 31-10-2019 9:26am

It looks and sounds like a dodgy connection somewhere, either with a remote board for the monitor which can cause issue's like you see but is normally intermittent or the connection between model 2 and montior.

its either cn3(maybe2) or cn7 i think is where the video connections are on model 2 depending on the version have a wiggle on them !

geotrig · 31-10-2019 9:34am

just googled CN3 on model 2c

31-10-2019 9:45am

Have you hooked up a 60-1 or similar to test the monitor ?

80s Synth Pop · 31-10-2019 10:11am

For the naomi, check the continuity from the middle wire on the GPU fan to the pcb then test the next couple of hops on the pcb.

This middle wire sends the fan speed to the board and if it's not connected the naomi won't boot.

I had a non-working naomi2 before and this was the fix for me.

BGOllie · 31-10-2019 10:21am

BrownFinger wrote: »

Have you hooked up a 60-1 or similar to test the monitor ?

that and also try the board on another vga monitor, a small LCD would work.

geotrig · 31-10-2019 10:23am

haha ignore me earlier I had it in my head it was HOTD and not hotd2 ,totally forgot what it was you got !
switch the vga cables about ,same advise stands but just the have a mess around with the remote board and vgas ,even swap in the ones you have from crazy taxi

Jack burton · 31-10-2019 12:29pm

I tested out the fan on the Naomi and disconnected it and the usual blank screen and then reconnected and booted so reckon that's ok. I'll double check continuity though tonight.

I tested HOTD 2 in the crazy taxi and still had the same issue so so it's not the game cart.

Didn't even think to test the HOTD on a VGA, have one in the garage and all. I'll test that tonight. I'll also double check all the connections

Jack burton · 31-10-2019 11:29pm

So got a bit more testing on HOTD done tonight. Found a few stray cables floating around for the gun sensor and demag, hooked them back up and nothing.

The working gun only works when it's pressed up against the glass, so not 100% sure what the problem is there. Could be dirt as there's definitely a bit of dust around.

Leaving the monitor on for a little while made it somewhat viewable so I was able to get into the service menu and run a few test. Pics below, looks like a few ram problems.

Weird thing is that what the game boot text loads to the picture looks good.

Jack burton · 31-10-2019 11:58pm

My monitor was buried under some stuff so I'll dig that out the weekend and test the VGA output on that

Jack burton · 01-11-2019 1:54pm

So looks like it's not a monitor issue at all

Same problems on the LCD, anyone know what issue that could be?

Optimus Prime · 01-11-2019 2:53pm

Any socketed chips or anything? id remove and clean all them first, i use an model making sanding thing like this to clean the legs.

Jack burton · 01-11-2019 2:58pm

I'll check over the weekend what's what in there and see.

Worst case scenario I'll just stick a dreamcast in there and do the same with crazy taxi :P

Optimus Prime · 01-11-2019 4:09pm

I was looking back at your first post and in this image below there is a couple of big scratches on that green board, middle\right-ish on it have you checked continuity there with a multi-meter in case ? You probably have, but just said id mention it

Jack burton wrote: »

01-11-2019 9:26pm

Looks like gpu issue, usually caused by overheating unfortunately you’d need a revision 1 Naomi motherboard as they removed some of the parts in later Naomi revisions

Jack Burton's adventures in Arcade restoring

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