Sega CD solder issue
hey guys so I have never solder in my life and this was a nightmare... I read online that when a sega cd doesnt power on its an easy fix just 1 fuse. SO i bought all the stuff I needed and went to work with youtube as a guide. Well the f'ng solder wouldnt melt so i got pissed off, tried to rip the fuse out, then took a power drill to it...made a bigger hole maybe? but barely and it worked so whatever. Then I tried to solder in the new fuse, pain in the butt but got it done. See pictures... My issue is after lookig at the youtube videos maybe I changed the wrong fuse? Still wont work maybe I fubared it but it may have also been the wrong fuse... anyone have any experience with this crap?
https://imgur.com/a/Hf9qp
https://imgur.com/a/Hf9qp
Comments
It looks like you replaed it, but the solder work doesn't look great. Have you checked for continuity across the pads for the new fuses? Also, if you took a drill to it and tried to rip it off, you may have damaged the electrical traces. You should check them for continuity from the fuse to the next connection.
Not sure how much this will help but this is how I got around replacing that tiny fuse in mine. If you can’t tell that’s a glass auto fuse and a plastic fuse holder double sided taped to the case. Easy to replace if it ever goes out again.
hey guys so I have never solder in my life and this was a nightmare... I read online that when a sega cd doesnt power on its an easy fix just 1 fuse. SO i bought all the stuff I needed and went to work with youtube as a guide. Well the f'ng solder wouldnt melt so i got pissed off, tried to rip the fuse out, then took a power drill to it...made a bigger hole maybe? but barely and it worked so whatever. Then I tried to solder in the new fuse, pain in the butt but got it done. See pictures... My issue is after lookig at the youtube videos maybe I changed the wrong fuse? Still wont work maybe I fubared it but it may have also been the wrong fuse... anyone have any experience with this crap?
https://imgur.com/a/Hf9qp...
Now that I'm home and can look on a bigger screen you changed the wrong thing. The fuse is the tiny white rectangle on the back of the board.
He changes the Pico fuse. So that's the right thig.
It looked to me like he changed the green thing (maybe diode) next to the pico fuse.
Can i just replace that back thing with a pico fuse?
What back thing?
The green fuse you used is a different type of pico fuse that will work but you put it in the wrong place. You removed what I think is a diode and replaced it with a fuse. You'll have to remove the green fuse and put the diode, or whatever it was back in its place. Then attach the fuse. Almost pointless to remove the old pico fuse because you can just attract the new fuse to the old solder joints.
If that makes any sense.
Damn, the diode is in the garbage, all the videos i watched showed that as the place where it was ugh.... can it work if i replace the fuse and just keep the thing i put in too
A diode only lets current flow in one direction and a fuse allows it to go both ways. If that was a diode, you probably want a same-spec diode installed there. If the pads/traces are mangled, it's still possible to run jumpers to wherever those traces lead to.
"D301" is the diode. It looks like it's still there in the picture.
The "FB503" through-hole component (ferrite bead?) appears to be on the top(?) board. If you had the old fuse from that spot, a cheap multimeter could test for continuity and tell you if it was bad. You could check the small surface-mount F301 too. Continuity just means it passes current through from one leg to the other. Sill, I can't assume the new fuse is making a good electrical connection to those pads and to the rest of the system. Drilling the holes probably destroyed the pads.
He changes the Pico fuse. So that's the right thig.
It looked to me like he changed the green thing (maybe diode) next to the pico fuse.
No. He changed the through-hole FB503 on the top of the board. He showed that area on the bottom because that's where the through-hole legs come out.
As far as I can tell, he didn't change D301 (diode) nor F301 (fuse). Still it's possible fuse F301 is bad and fuse FB503 was fine. Wouldn't know unless it was checked for continuity first. Traces and pads are probably damaged now.