Sega STV carts - repairable ?

I

IronGiant

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Has anyone ever tried to repair a Sega STV cart? Just curious if there are any common points of failure, etc.

Don't they also contain a couple of PALs?
 
Xian Xi

Xian Xi

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Are you fixing one? If so, what's wrong with it?
 
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IronGiant

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Not yet, but someone with a Radiant Silvergun asked me if they could be repaired as he knows that I repair arcade game boards.

Just curious really if anyone has tried it.

BTW, he gets a black screen when he plugs it into his (known working) STV - edge connector has been cleaned on the cart.
 
channelmaniac

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I would be curious to see if the cart is really bad.

Those symptoms can point to a problem with the motherboard as well. They can be VERY finicky about carts when the solder joints break on the 2 SH-2 CPUs.

Now, that being said, I have seen a bad cart before. The problem is that the ROMs are all surface mount and don't have part #s on them. Good luck finding replacement chips to program without part numbers.
 
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IronGiant

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channelmaniac said:
I would be curious to see if the cart is really bad.

Those symptoms can point to a problem with the motherboard as well. They can be VERY finicky about carts when the solder joints break on the 2 SH-2 CPUs.
Click to expand...

So leading to some carts working but not others? Interesting.

Now, that being said, I have seen a bad cart before. The problem is that the ROMs are all surface mount and don't have part #s on them. Good luck finding replacement chips to program without part numbers.
Click to expand...

Some hope of that!

Thanks for the advice.
 
Dion

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I've had carts that just won't be recognized by the motherboards. Correct region but the pcb acts like there is no cart. A different cart works fine. It was a cheap one so I just pitched it...
 
P

pcb_revival

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If its the same RS cart disscussed over @ AO then no one as ever seen it work.

Not current owner or the previous one who collected all sorts of RS wares but never had a ST-V motherboard.

And yes the motherboards are pretty darn flaky I had one came to life after being dead for years, then died again on the next test.
 
channelmaniac

channelmaniac

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The 2 Hitachi SH-2 CPUs need to be resoldered if the board isn't passing tests.

Hold down the test button while powering it up to access the factory tests. Run the test on the slave CPU and if it fails, resolder them both.
 
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