Check the 315-6145 , is it hot? Also make sure the video sync hasn't blown on the filter board. (video sync or ground, forgot which).Hello! I recently acquired an "untested" Naomi 1 motherboard. I swapped the filter board it came with as it was pretty corroded and had some sketchy looking components.
I also swapped the super cap and bios. The case fan was kaputt so I pulled it out for now.
Board looks good otherwise, like it was made yesterday, but it won't show a picture on any of my monitors, just static interferance. There is a boot sound however so it's not completely dead.
I've previously managed to save a couple of laptops by heating the motherboard in an oven (wrapped in aluminum foil and only exposing the gpu chip) so thought I'd try the same procedure on the Naomi and see if it comes back alive. Have anyone tried this?
There was no sound, I didnt have a cart or dimm installed but guessing it should still play a sound during the Naomi logo sequence.Mine with dead ramdac looked almost the same on 15khz setting. Replacing it made it fully working again. Is there sound?
thank you for your answer. the project has been on halt for a while but i now decided i should take another look at it..Check the 315-6145 , is it hot? Also make sure the video sync hasn't blown on the filter board. (video sync or ground, forgot which).
Alright I will try to replace the 315-6145, it did feel a bit toasty.. thank youTouch the 315-6145 and tell us if it's hot. According to your description it sound very much like it has blown.
I wouldn't bother with the other stuff before checking that. Sorry. That sounded meaner than it was meant to be.
I don't own a thermometer so it's hard to tell, but it's replaced now Just need to clean up, check for continuity and hope that I don't have to redo it.. half of the pins are probably shorting..If it immediately after turning on gets hot, it's definitely toast. Replaced 3 of them in the last few months and it was always the same. Any idea where some can source the chips? You're welcome alex!
seems to be quite a common issue. it didn't get hot immediately for me, but then again I've burnt my fingertips many times before so maybe it's just me who doesn't feel itHa, told you. Got no thermometer as well but it immediately got hot when u turned it on.
Maybe the cap is the issue. I got my Naomi's in the cabs and I am too lazy too take em out and disassemble them. Maybe I'll do it this week. I haven't found any schematics mate, sorry.
As long as you won't try to run melty blood it should be good I guess? Are you running it in a cab or as an external setup?