Recent content by irepairsega

I can give you prints but I can tell you any sync issues on Model 2 or 2A are a combination of bad diodes on sync output and custom IC 315-5648. 95% of the time its a shorted diode and bad output of custom.

LG Slimline SP80NB80 from Best Buys. It uses single USB cable LG Slimline GP30NB30 also from Best Buys. Uses dual end USB. The two USB I am guessing is for added power. I have not seen problems with drives. I have seen problems with the USB cables used only.

Lindbergh PSUs as they age have been known to take out video cards as well as motherboards and cause all sorts of stability issues running Game Bd. This is a well know issue. I have replaced well over a hundred Video Cards as well as dozens of mobos because of PSU damage. Sega does not sell...

Sorry on late replay here. If you have 6 series card, most likely your game software is only going to allow that card to work. Such as with Lets Go Jungle and some HOD4, there are different versions of software that allow different cards. When I change out a 6 series for a 7800, if Lindy won't...

Just chiming in here. In looking at box in pic I assumed BGA damage right away. After receiving pcb for repair, I found it would run fine on Naomi 1 carts but would freeze on Naomi 2 carts. No BGA damage found. No shipping damage found. Replacing RAM at IC106/107 took care of issue. Simple cheap...

I just noticed this string. E66 has to do with bad or wrong region stored in EEROM on mobo near the RAM sockets on edge of pcb.

Just curious why you are using this I/O Bd rather than standard JVS. We only used this I/O Bd with games that used a motor drive system to inface with that system.

Dip switch settings for force feedback strength are on DS bank 1 on the Drive Control Bd. All off = weak and all on = strong. Good luck finding a manual that shows this. Closest I could find was a Super GT manual showing it.

I have seen many Naomi as well as N2 dropping out like this more and more over the last four years. 95% of the time its the RAM around SH4. Yes there are many reasons for a N1 or N2 to die but if the GPU fans spinnin and set has proper power, no one has been dinkin with it, I bet its these RAM...

Turns out the serial ID is stored in FLASH along with firmware on Media Bd. All of my files were corrupted so no way to confirm. But thank to Joe at Jomac its all happy now.

Just curious if anyone has encounters error 4 from Media Bd type 3 Triforce. This just happened on my test unit I have been using for like 18 years. Its set up to run GDROM, CF, SSD and I have updated firmware obviously. It just came up with this error 4, Bad serial number on media bd. Sure...

Little late on this one but I thought I would tag in here. This is a paper I wrote up a long time ago. I also have a sheet on nice fix. email me if you would like to see it. Sega Naomi / Hikaru Loss of Video Problem Problem: Video loss, shadows in video, dark video or rolling vertical sync...

WWF was a single Naomi setup with dual JVS I/O Bds. I do have a pdf of the useless manual I can send you. Just email me at [email protected]. It would have been a cool idea for Virtua Tennis to run on this cab but it would just be same view both monitors so kind of useless. WWF worked because...

I just want to say very well done so far. I am glad to see you picking this up. I was the last of three people that worked on these in the world and I stopped doing these a couple years ago. I will still do reflows for opens but that it now. Everything you are doing so far is dead on perfect...

Careful with this tracking bd. Make sure you are using the Sega Gun Input Protection Bd or at least fuse protect the tracking bd 12vdc input at 1/2amp (500ma) fast blow. If your guns damage this one, it can brick it really quick. I can fix 99% of the 1st and 2nd gen units. On these 3rd gen ones...