Bootleg cart sound issues

[mhkohne]

I've got a Neo Bomberman cart that I got cheap. The seller was up front about it being a boot, and having sound issues. Does anyone know if there's any way to actually fix the sound on these? Or at least have an idea of what is going on, electrically?

 

[Misos]

Post some pictures of the cart. And what kind of sound issues? No sound? Glitched music?
It could be related to the neo-pcm, neo-zmc, m1, v-roms.

 

[mhkohne]

Pics of the cart boards attached.

Noise demo at

Basically, when you're choosing the game mode, you get noise over top of the sound (I THINK there's sound there under the noise at least).

Thank you!

 

[SignOfGoob]

Man, that’s a pretty gnarly boot…

 

[Misos]

Wow. Uh, ok.

I would say the problem is one of the V roms.
Ideally you should dump the rom and see if the crc match the original but they splited the v1 in 2 in order to make the bootleg and used one of those tsop adapters.

You can split the v1 and burn the files yourself using two 27c160, but if the issue is only in the select screen i would not bother.
Try to clean the flux residues, maybe that would help too.

 

[Evan]

May just want to burn your own chips

 

[SignOfGoob]

I would just buy a better bootleg. Mine at least has normal windowed EPROMs and not this glued on micro bullshit. This looks like more work than it’s worth, but then I’m lazy sometimes…

I would try to clean off the entire container’s worth of flux that they used, it’s possible that’s the entire issue but I doubt it.

 

[Neo Alec]

Yeah, those little PCB's with the flash chips must have been cheaper back in the day. But they kind of suck.

 

[mhkohne]

I'll try cleaning the flux, and I'll keep my eyes open for another copy - this one didn't cost me much, and I don't play it that often.

Thanks!