STV woes part 2 – Radiant Silvergun cart

PCB problems and fixes
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Neo'nate
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STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » March 18th, 2009, 8:01 am

STV woes part 2 – Radiant Silvergun cart

I have run this cart now on three separate mobo’s, one with a Japanese bios, one with a dual bios and one with a US bios, just to check and make sure as I have read that this cart doesn’t “like” anything other than Japanese bios mobo’s but “should” run on any of the mentioned above. The bugger isn’t working however, it just leaves a black screen with lines going through it similar to the look of an old TV when your trying to tune it in and haven’t quite got the right frequency. That in itself is odd, given that usually when there is an issue with an STV cart, it runs the STV logo and tells you that there’s an error with the cart (in the same way as a Naomi mobo). As already stated, I’ve tried this on various working mobo’s and I’m sure that the fault lies with the cart. Just what I am supposed to do to solve the problem I am unsure. I’d love some help on this one guys as we all know how much Radiant Silvergun carts can cost . . . . :|

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Re: STV woes part 2 – Radiant Silvergun cart

Post by MrSporty » March 18th, 2009, 8:35 am

You are 100% sure that the RSG cart you have isn't a boot ?

Pop the screws and take some snaps of the carts pcb if you can, at least if it isn't then you can give the edge connector a damn good clean. I know my own ST-V mobo can be pretty picky when it comes to certain carts, but as you posted you usually get an error notice, the patterned interfrerence you noted almost sounds like the cart has a line shorting to ground.

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Chi
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Re: STV woes part 2 – Radiant Silvergun cart

Post by Chi » March 18th, 2009, 10:00 am

I can't help with this problem, but I can confirm RSG runs on a non-Japanese STV.
"TO THE untrained eye Christian Cooper might have been stamping out a small fire " - The Times, 7th Feb, 2004

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » March 18th, 2009, 11:18 am

I'll take some pictures and post them on here asap of the pcb. Cheers

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » April 6th, 2009, 3:22 pm

How the hell do you get stv carts open without breaking the case? :evil:

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Re: STV woes part 2 – Radiant Silvergun cart

Post by MrSporty » April 6th, 2009, 3:40 pm

Just remove the 2x screws from the reverse of the case and the two halves will just lift apart. Its pretty much identical to how a snes cart opens up.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by ROBO84 » April 6th, 2009, 7:15 pm

You might need one of those 'gamebit' drives to open it up though, you can get them on ebay.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » April 8th, 2009, 3:15 pm

Theres no bloody room to get at those screws tho, thats the issue I guess. I'll give it another try!

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Re: STV woes part 2 – Radiant Silvergun cart

Post by quoth09 » April 9th, 2009, 11:34 am

It should be gamebit screws in there, similar to what is on MegaDrive carts. As for enough room, there is more than enough room, if not you have a severely short bit, or something else going on there.

The 2 down at the bottom is what you should be looking for - one on each side:

Image

However, that image is of a bootleg cart, and those have normal philips screws in them usually, so just ignore that part; the cart should look dead on the same otherwise.

After you get those out, it should just open upwards, with the top acting like a hinge.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by pcb_revival » April 23rd, 2009, 4:52 pm

Original should look like just another regular ST-V pcb.

Image
Last edited by pcb_revival on June 14th, 2009, 11:25 pm, edited 1 time in total.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by trmatthe » April 24th, 2009, 9:54 pm

Can you post a pic of the screen with the game running please? From your description it sounds like a number of issues; poor sync being one of them.

t.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » April 25th, 2009, 11:49 am

I'm going to try and pop the cart open, and while I dont think its a sync issue, I will play around and see if it is . . .cheers for raising awareness to that one! pics to follow. Thanks again everyone.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » April 27th, 2009, 1:56 pm

Ok i've opened up the cart and it is a very clean looking 100% NOT booty cart. it's exact to the previous posted picture. So therefore, whats the problem?

would the potential problem of a sync issue be eliminated if theres no problem with other games? Would it change game to game? :think:

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Re: STV woes part 2 – Radiant Silvergun cart

Post by pcb_revival » April 28th, 2009, 12:36 pm

trmatthe wrote:Can you post a pic of the screen with the game running please? From your description it sounds like a number of issues; poor sync being one of them.

t.

What he said.


@Neo'nate

Tried cleaning the cart edge connector.

Have you ever seen this particular cart running correctly.

Wheres it from.

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » May 7th, 2009, 9:40 am

No I bought the cart from a RS collector, whom bought it simply for their collection purposes, but he is not an arcade type. So no the carts never been seen running, although the seller is reputable and therefore, I never had any doubt when buying. . . how wrong I may turn out to be!

Here is a picture of what happens when the cart is inserted. All other carts I own work fine on both mobo’s I own.

Also, when running CPS2 hardware the same happens, leading me to doubt the cab itself. But the thing is the same problem (with the RS cart) happens on all cabs and superguns I’ve tested it on also. . . .

Image

Thanks for any help guys!

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Re: STV woes part 2 – Radiant Silvergun cart

Post by goatboy » May 7th, 2009, 10:16 am

Looks like no signal. Is it wise to have the st-v mobo standing on top of your screen btw?

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » May 7th, 2009, 10:53 am

:D

I was holding it! (the mobo)

No signal? :wtf:

As in the carts dead? the only thing keeping my hopes alive is that CPS2 games appear to do the same, but when I place them in other cabs they run just fine . . . :think:

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Re: STV woes part 2 – Radiant Silvergun cart

Post by goatboy » May 7th, 2009, 10:58 am

Odd that it works ok in your other cab. :eh: Somebody?

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Re: STV woes part 2 – Radiant Silvergun cart

Post by Neo'nate » May 7th, 2009, 11:09 am

I know, on one hand you could blame the cab and on the other the cart? :?

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Re: STV woes part 2 – Radiant Silvergun cart

Post by pcb_revival » May 7th, 2009, 5:04 pm

Neo'nate wrote::D

I was holding it! (the mobo)

No signal? :wtf:

As in the carts dead? the only thing keeping my hopes alive is that CPS2 games appear to do the same, but when I place them in other cabs they run just fine . . . :think:
Looks dead to my eyes - as you say the motherboard does function with other carts.

Does the game coin up and play sounds.


Also could it be that your CPS2 games have suicided? Results in a blank screen usually of one colour.

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