Naomi 2 repair log

[hrvat9]

Thanks for the tips guys! I went ahead and changed ic9 and ic20 and everything checked out now with a Naomi 1 game. I also just changed 116 and 118 and my Naomi is happily back to working order WOOOHOOO. It’s not slow as piss and is loading now. Wish I had the skills back then before I sold my twin initial d 3

 

[hrvat9]

Going for it ; had another one that didn’t play Naomi 2 games and all the rams were changed

 

[Ace`]

That must have taken some serious heat to remove with the heatsink still attached.

 

[MagicianLord77]

Going for it ; had another one that didn’t play Naomi 2 games and all the rams were changed

Nice. What tools did you use for taking it off? and how do you plan to do the reballing? I might be in the same situation but not sure how to do it so I'm watching closely

 

[hrvat9]

That must have taken some serious heat to remove with the heatsink still attached.

Nope! Lots of flux and air though , the hardest part was keeping everything from blowing away

 

[hrvat9]

Nice. What tools did you use for taking it off? and how do you plan to do the reballing? I might be in the same situation but not sure how to do it so I'm watching closely

Hot air station; would not recommend if you’re not experienced

I just got solder balls in different sizes to see which fits best on the pads

 

[Ace`]

0.7mm is the correct size I think but don't quote me on that.

 

[hrvat9]

0.7mm is the correct size I think but don't quote me on that.

Looks like you’re right ; bought a bunch of stencils and got them today. 0.76 fits almost good so I’m going slowly

 

[hrvat9]

Got it back on the board but maybe I didn’t get it seated all the way; the red led is blinking while the fans are trying to spin but can’t. They’re like shaking back and forth

Edit : looks like I shorted the 3.3v rail somehow as the wire from the pay is getting hot

 

[Ace`]

Merged balls under the chip or the chip itself is shorted.