FB means Ferrite Bead, it's a component meant to filter radio frequency interference. It is not a fuse in any form. The power signal passes through it for FCC conformity. Japanese/Asia units will have less ferrite beads since they have no need to meet FCC requirements.
Sir , It's my Mega cd faulty ? I don't have a megadrive , but i connect the mega cd (model 1) on my genesis 1 model. When i power up the console the cd tray comes out without touch anything ? (i don't know why he act like this). It's any way to fix this ? Best.
@@DJAlexUnderBase First, I'm assuming that there's nothing wrong with the plastic gears that drive the tray (do you hear grinding sounds as the tray opens)? If the gears are good, then there's two switches on the CD-ROM PCB - one that tells the unit when the tray is fully open, and another that tells the unit when the tray is fully closed. If one of the switches isn't working then it will automatically eject the tray at power on. You'll have to disassemble the CD-ROM and inspect the switches - they should read continuity with a multimeter only when the contact metal is pushed in. They may need to be cleaned with contact cleaner or the contact metal may need to be bent out a little so it isn't reading closed all the time.
Very interesting. Looks like getting the LA software setup to capture was probably a nightmare, not very descriptive error messages! Looking forward to a second video.
Yes, you can absolutely test RAM and ICs with it as well. It's useful for any situation where you'd want to monitor and log the digital activity of multiple channels over time. With RAM and ICs, you'll have to manually label the address and data lines in the analyzer, but then it can automatically decode the signals into hexadecimal for you. The waveform display is also really useful for seeing what all the lines are doing simultaneously. I'll likely discuss probing the EPROM in Part 2, so I'll be able to demonstrate some of what I'm talking about here.
My model 1 has been fully recapped, and works almost 99% perfect. The one and only issue which we cannot figure out is why during some games there’s whooshing sound artifacts, usually when an fmv is going on and the characters sounds like there’s slight swishing compressed sounds around their voice as they speak. Do you offer repair service at all to find out what’s wrong?
That's an interesting problem - I'd like to see a video clip or two to get a better idea of what the sound is like. The Model 1 Sega CD has several audio DAC components on the small daughterboard at the back, and I'd focus on that area for audio troubleshooting - there may be an OpAmp, capacitor, or resistor in that section that's bad or has a broken trace. Sorry, I do not offer repair services at this time - I'm already backlogged for months with repair work.
Man…. What a bunch of wires😂 It woud be usefull if someone with FPGA knowledge would build a board that can capture all TTL edge transitions and then with a app on pc to show the read and write of thats mapped with the address. Good luck with the debugging!
FB means Ferrite Bead, it's a component meant to filter radio frequency interference. It is not a fuse in any form. The power signal passes through it for FCC conformity. Japanese/Asia units will have less ferrite beads since they have no need to meet FCC requirements.
I stand corrected. Thank you for the information, and for all of your other help as well - much appreciated.
Sir , It's my Mega cd faulty ? I don't have a megadrive , but i connect the mega cd (model 1) on my genesis 1 model. When i power up the console the cd tray comes out without touch anything ? (i don't know why he act like this). It's any way to fix this ? Best.
@@DJAlexUnderBase First, I'm assuming that there's nothing wrong with the plastic gears that drive the tray (do you hear grinding sounds as the tray opens)? If the gears are good, then there's two switches on the CD-ROM PCB - one that tells the unit when the tray is fully open, and another that tells the unit when the tray is fully closed. If one of the switches isn't working then it will automatically eject the tray at power on. You'll have to disassemble the CD-ROM and inspect the switches - they should read continuity with a multimeter only when the contact metal is pushed in. They may need to be cleaned with contact cleaner or the contact metal may need to be bent out a little so it isn't reading closed all the time.
I love this type of deep dive content. Bookmarked to watch later 😁 Thanks for putting it together!
Very interesting. Looks like getting the LA software setup to capture was probably a nightmare, not very descriptive error messages! Looking forward to a second video.
any source on replacing the power board up top?
Incredible video. Looking forward to part 2
Really good video mate, I will be trying soon to get myself one of these kits. I guess you could test all sought of Rams and ICs with it also?
Yes, you can absolutely test RAM and ICs with it as well. It's useful for any situation where you'd want to monitor and log the digital activity of multiple channels over time. With RAM and ICs, you'll have to manually label the address and data lines in the analyzer, but then it can automatically decode the signals into hexadecimal for you. The waveform display is also really useful for seeing what all the lines are doing simultaneously. I'll likely discuss probing the EPROM in Part 2, so I'll be able to demonstrate some of what I'm talking about here.
Awesome video sir ! Thanks !
Wow. Thanks for this video. When I begin project Eli, I'll be reaching out to you
My model 1 has been fully recapped, and works almost 99% perfect. The one and only issue which we cannot figure out is why during some games there’s whooshing sound artifacts, usually when an fmv is going on and the characters sounds like there’s slight swishing compressed sounds around their voice as they speak. Do you offer repair service at all to find out what’s wrong?
That's an interesting problem - I'd like to see a video clip or two to get a better idea of what the sound is like. The Model 1 Sega CD has several audio DAC components on the small daughterboard at the back, and I'd focus on that area for audio troubleshooting - there may be an OpAmp, capacitor, or resistor in that section that's bad or has a broken trace.
Sorry, I do not offer repair services at this time - I'm already backlogged for months with repair work.
Awesome!
Man…. What a bunch of wires😂
It woud be usefull if someone with FPGA knowledge would build a board that can capture all TTL edge transitions and then with a app on pc to show the read and write of thats mapped with the address.
Good luck with the debugging!