got a MV-1fz...trying hard to make it work

[escarioth]

Hi everyone

i recently came upon a deal to get a non-tested MV-1fz.
i already had many of the stuff needed to make it work. (well i think)
but i cant even get a video signal.

here's what i use.
Mv-1fz
138-in-1 cart with pcb thing..
vogatek IV supergun
atx PSU 600w.
scart cable + scart/hdmi box

when i plug a jack plug into the headphone im not hearing anything.
and no video is being shown...even when no game in 

but all lights are on when i start it up.
surely something is off that i dont understand.. anyone had something similar happening ?

[PunkCryborg]

Have you tested other games with the Vogatek? Skip the 138 for now and focus on just the MVS. Without a cart you should get a cross hatch.

[escarioth]

got nothing...someone told me it could that my scart box cant upscale 59hz
i think my scart cable could be a problem too since i dont recall having that cable...maybe it was a defective one (but if it was i would have trashed it..so..not sure yet)

but for now. no video when everything is powered 

[majors]

...a non-tested MV-1fz.

Translation: Broke as hell.

I'm assuming you have no other JAMMA boards to try?

[escarioth]

nope i dont

like ive said, im not too sure since everything seems at the right place.
lights are on.
i hear the system being powered.

i noticed the screen flickering after 4-5 sec...
as if its about to have something being shown...
but then it stays black.

thats why im not sure if its
-cable not being good.
-scart/hdmi box not being able to display correctly.
-my setup being shity as hell, i should just trash everything and go buy a damn cabinet ¬¬
 ( i like last option but ze wife is against it ....for now.. so i have to find a way to make this works lol)

[PunkCryborg]

I wouldn't go assuming your set up is broken till you get another board that isn't "untested" to try it with. You can get like an Aerofighters PCB for $40

[escarioth]

ok ill ask a friend that will come next week to bring his board
that way i can test if supergun or  even the cart has problems

if not ill know that the board has something.
maybe i should check if the chip is correctly socketed

[PunkCryborg]

If you bought an "untested" pcb off ebay you bought a broken board. If the seller sells other arcade stuff they are perfectly capable of testing a pcb

[escarioth]

If you bought an "untested" pcb off ebay you bought a broken board. If the seller sells other arcade stuff they are perfectly capable of testing a pcb

nope seller dont usualy sell arcade parts.. he just found one.. since he knew i already had
some parts back home, he proposed me a deal.  ...nobody seem to know about this
kind of product around here...

[EvilEvoIX]

Any pics of this board?  Any way you can just output scart properly without up-converting?  The 138 in one probably just boots to a home screen and you have to insert coins and then select a game.  I would simply listen again, hit some buttons to insert coins then just hammer start and see if you can hear a game start up.  If so you may be OK with video out.

Post pics of everything you have.

[escarioth]

ill do when i get home

[escarioth]

here how it look like






if you need something closer just ask 

[ccovell]

Unplug the whole 138-in-1 for now, since that outputs its own RGB video image at startup.  You're potentially not seeing the Neo-Geo's video at all with that thing in there.

[escarioth]

yeah i removed it right after to check if id see some grid...
nothing at screen.

ive checked if i can get volts.
4.85 on both 5v
and 12.1 on 12v ..
so i guess for a start the power is going into the board

[ToyMachine78]

Damn. That looks like Franken-system

[SignOfZeta]

You have so many potential problems there. I don't envy you.

My first suggestion would be to do this testing with an SD CRT. Then at least you can be %100 positive as to what's going on with the video. With all that modern junk in there you could have a perfect picture and not even know it if the set is being picky for whatever reason.

Does this board have any kind of audio out other than the JAMMA edge? That too is a valuable help. If you can hear the game running and not see video (something most SD CRTs will let you do, many HDTVs don't) then that's valuable info.

Is there a power LED on this board? It seems like it would.

As others have said, the board should made a test pattern even without a cart.

Most people who are into arcade stuff have enough junk laying around to swap things out for diagnostic aid. It's usually much easier. You're probably headed this way too, so my advice is to get another MVS mainboard and see how that goes.

[escarioth]

You have so many potential problems there. I don't envy you.

haha 2 online friend told me the exact same thing. 

My first suggestion would be to do this testing with an SD CRT. Then at least you can be %100 positive as to what's going on with the video. With all that modern junk in there you could have a perfect picture and not even know it if the set is being picky for whatever reason.

yeah i dont have a single thing here for testing.
i do have 2 sony trinitron but vogatek IV only have a scart output...and i only have a scart/hdmi box....and well those tvs dont have hdmi input so testing with it is pretty much useless right now...so first thing first.. i got to find someone with better tools.. else i'm gonna throw money a bit everywhere without much more then crossing my fingers...

Does this board have any kind of audio out other than the JAMMA edge? That too is a valuable help. If you can hear the game running and not see video (something most SD CRTs will let you do, many HDTVs don't) then that's valuable info.

nope.. only way to get sound is with Jamma with this sucker.....
i would have prefered a real audio out onboard 

Is there a power LED on this board? It seems like it would.

As others have said, the board should made a test pattern even without a cart.

Most people who are into arcade stuff have enough junk laying around to swap things out for diagnostic aid. It's usually much easier. You're probably headed this way too, so my advice is to get another MVS mainboard and see how that goes.

yeah the led lights up when i power the board.
i checked, 12v and 5v reach the board too.

ill try to find someone around here

[BigusSchmuck]

You know it might even be the power supply. You probably want to stick to the switching variety. 600 watts is a little over kill, try to shoot for 200-300 watts. http://www.ebay.com/itm/ISO-Switching-Power-Supply-ISO-400-300-watt-p1-20-4-pin-/171855188584?pt=LH_DefaultDomain_0&hash=item28035e1268

[escarioth]

ok i still have one in my old pc.
ill try it tomorrow

thank for the infos everybody

[SignOfZeta]

You know it might even be the power supply. You probably want to stick to the switching variety. 600 watts is a little over kill, try to shoot for 200-300 watts. http://www.ebay.com/itm/ISO-Switching-Power-Supply-ISO-400-300-watt-p1-20-4-pin-/171855188584?pt=LH_DefaultDomain_0&hash=item28035e1268

600W? Is that...50A at 12V? Fuck, does this thing power a two player Scud Race?

Having more wattage than you need is never a bad thing, but I can't imagine any arcade board needing 50 amps.

[escarioth]

haha yeah well i know its way too much... 
some people online said that it needed a minimum of 400w...

lately i found that some other people were using less then 400w.
without problem. so i started to wonder if PSU was the issue...

anyway ill try this tonight