3DO ZONE Forums

Hi Taijigamer, Sorry I didn’t notice your message reply for long time. As you can see in the photo of lens, it’s melted with over heat due to over voltage. I think this damage is caused by lightning and I also think other ICs on board is also damaged. So this 3DO ended it’s life as physical hardware...

Thanks Tajigamer!

Successfully desoldered IC and dumped BIOS. BIOS IC isn’t damaged and confirmed 4DO boot fine too using the dumped BIOS.

So, I guess something other than BIOS is damaged on mother board.

https://tamataro.exblog.jp/239145098/ Umm. IC680 is missing from working 3DO. Non working 3DO has IC680 soldered on board. Maybe Non working one is older revision and IC680 is omitted from later revisions. Another thing I found was some liquid leak from ICs on non working 3DO. Maybe these ICs are d...

Sad news. Actually two sad newses. I did try swapping laser assembly. Let’s call non working 3DO a 3DOA and working 3DO a 3DOB. 3DOA with laser assembly B didn’t work just like 3DOA with laser assembly A. 3DO Logo shows up and goes black. No CD spinning. Laser won’t move at all. 3DOB with laser asse...

OK. I’ll get MX29F800 too and put pull up on reset pin. I need to find some way to write MX29F800 Flash though. I hope it has compatibility with MX29LV160. By the way, I found something curious. https://tamataro.exblog.jp/239140576/ In this link, I uploaded 3DO lens photos. Round one is lens on work...

Do I need to lift reset pin?
It looks like pin1 isn’t connected to anything so I guess I just need to add jumper wire.
I think it’s better to add 10kohm between reset and VDD instead of directly connecting reset to VDD.

Hi a31chris!

I swapped working 3DO’s power board to non working 3DO’s power board. Non working 3DO still didn’t work. Working 3DO still works. Which indicate that root cause isn't on power board. It might be defective lens unit or defective mother board. Anyway, I guess I need to say good bye to this non working...

Thanks for reply. I’m not trying to replace BIOS. I’m just trying to dump BIOS and that’s it. Whole MASKROM bios is mapped to certain memory map location so I tried to read whole memory map. Anyway, I guess most easiest and most proven way is desolder BIOS chip. I’ll try to remove BIOS chip from boa...

I’m so glad getting reply from you!!! OK. I’ll get extra caps and replace old caps. Part to hold CD is also busted so I think it can’t play games though. https://tamataro.exblog.jp/iv/view/?i=201902%2F20%2F19%2Fa0340819_22370277.jpeg It’s been quite a while since last comment on other thread so I th...

oh no! I think I came here little late. All download links are dead.
Anyone here has any backups of files?

Hi all, I’m not here to ask you to share BIOS or ROMs.don’t want to offend forum rules. I want to dump BIOS from my own FZ-10 console legally. Because some of you are talking about homebrew and emulator, anybody here can share me technical information about how to dump 3DO bios? I have one FZ-10 whi...

Hi everyone. I’m tamanegi_taro living in Japan.
I had 3DO and several American games until I gave it to my friend like 20 years ago.
Now I’m back!