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Thank you so much for posting those photos. I don't think the wire is connected to the R7 resistor, so trying to solder a jumper wire may be a little more tricky.

I didn't have any battery leaks un ...

Yes, that would be very helpful. I'm no good at photography. Either that, or I don't know how to adjust the settings on the camera lol.

No, I'm still waiting for a response as to soldering that disconnected wire. Is it connected to the R7 resistor or not?

I finally found the wire that was disconnected by the battery leakage. On the mainboard, it's the wire which runs on the right hand side of the R7 resistor (from your perspective). The disconnection i ...

I have removed most of the corroded gold foil covering the copper layer with various tools. However, I think the acid has corroded the copper layer too. The copper layer under that blackened area seem ...

Did you mean this one?

http://img252.imageshack.us/img252/8293/smd03zt2ky6.th.jpg

The acid has corroded part of the copper layer, but how do I remove that if it's stuck solidly into the circuit ...

I have Sonic 3 and Knuckles on my Sega Saturn, which functions perfectly fine, so I'll just leave the SMD800 battery out from now on. Even if my SS battery goes flat and I lose the memory, I can easil ...

Thank you Xenepp, I'll definitely give that jumper wire idea a go; however, I'll have to get my physics teacher's permission to solder the wire at school (I don't have that sort of equipment at home). ...

I'm not a good photographer, but I think these might help. The areas where I think the battery leak has caused some damage are circled. I'll number the images from 1 to 4, from left to right.

http: ...

Oh bummer, so the battery isn't the culprit then. So I'll need to check the other components that you mentioned then. Sad

How do I remove the leaking old battery from the SMD800? Do I just pull it o ...

So can the SMD800 function altogether without the battery? If it doesn't need the battery, and I replace it with a new one, wouldn't it will still fail to load any games?

So what exactly is the battery for, besides memory? I just searched and found this topic:
Yeah, but try to find a similar but better battery (300mAh+), 60mAh is pretty low.
The one from the online s ...

I checked the battery (the dark blue thingy that says VARTA), and I'm sure it's one of the culprits. It has leaked some solidified stuff out of it. I have carefully removed as much of that stuff as I ...

An update from me:

I managed to single out the SMD800 itself as being the problem. The Genesis is fine, since it can play cartridges. I tried playing the Sonic 3 cartridge with the SMD800 attached, ...

Thanks for your rapid reply, but what does the DRAM and the other chips that you mentioned look like, and whereabouts are they? Could you label them on a photo for me? I'm not familiar with playing wi ...