Atariboy2600 Posted May 24, 2018 Share Posted May 24, 2018 Well it finally happen both of my Sega CD model 1 and model 2 are not turning on any more and I check the power supplied both are turning on the Sega Genesis model 1 with no trouble so it can only mean that the CD unit's a green fuse is probably blown. How can I check this and or fix it? Here's a photo of both Sega CD 1 and 2 as they where working back in 05 1 Quote Link to comment Share on other sites More sharing options...
Austin Posted May 24, 2018 Share Posted May 24, 2018 The first step to checking it is opening up the console.. Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted May 24, 2018 Share Posted May 24, 2018 Once you have the Sega CD opened up, then you look for where the pico fuse is located and use a multi-meter to check for continuity on both ends of it. Did they both die at roughly the same time? 1 Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted May 24, 2018 Author Share Posted May 24, 2018 Once you have the Sega CD opened up, then you look for where the pico fuse is located and use a multi-meter to check for continuity on both ends of it. Did they both die at roughly the same time? The Model 2 dead about month and an half ago and model 1 about 6 month ago. Quote Link to comment Share on other sites More sharing options...
derFunkenstein Posted May 24, 2018 Share Posted May 24, 2018 (edited) I'm sorry I couldn't read this thread. Too busy salivating over that photo, which I'm sure is why you posted it. Edited May 24, 2018 by derFunkenstein 1 Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted May 30, 2018 Author Share Posted May 30, 2018 Forgot to post the two Sega CD units I got Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted November 16, 2018 Author Share Posted November 16, 2018 Wonder if anyone out could help me in how to fix these two systems? I wanted to get what ever tools needed to make these turn on again. Quote Link to comment Share on other sites More sharing options...
SignGuy81 Posted November 16, 2018 Share Posted November 16, 2018 (edited) On the Sega CD model one check the voltage going into IC6 on the sub board. This is a 5 volt regulator pins left to right are Input, Ground, Output. Check from Ground to left pin to check for the input voltage and if you have that then check for the output voltage on pin 3. After doing those checks come back with findings. Edited November 16, 2018 by SignGuy81 Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted November 16, 2018 Author Share Posted November 16, 2018 On the Sega CD model one check the voltage going into IC6 on the sub board. This is a 5 volt regulator pins left to right are Input, Ground, Output. Check from Ground to left pin to check for the input voltage and if you have that then check for the output voltage on pin 3. After doing those checks come back with findings. Okay as soon as I get some tools Ill check it out. Quote Link to comment Share on other sites More sharing options...
SignGuy81 Posted November 16, 2018 Share Posted November 16, 2018 (edited) Wonder if anyone out could help me in how to fix these two systems? I wanted to get what ever tools needed to make these turn on again. Sorry didn't notice what you were asking at first. Start with screwdrivers and multimeter for initial checks and you will need a soldering iron and desoldering tool or wick to replace defective components. Edited November 16, 2018 by SignGuy81 Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted November 16, 2018 Author Share Posted November 16, 2018 Sorry didn't notice what you were asking at first. Start with screwdrivers and multimeter for initial checks and you will need a soldering iron and desoldering tool or wick to replace defective components. Ah okay also any photo on witch circuit to check? Quote Link to comment Share on other sites More sharing options...
SignGuy81 Posted November 16, 2018 Share Posted November 16, 2018 Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted November 16, 2018 Share Posted November 16, 2018 (edited) Have the Pico fuses been checked like I suggested further up in this thread to verify they are good? Edited November 16, 2018 by -^Cro§Bow^- 1 Quote Link to comment Share on other sites More sharing options...
aliensyndrome Posted November 27, 2018 Share Posted November 27, 2018 It does sound like a fuse problem (or at lease one of your problems). You should really get yourself a multimeter, but in a pinch (on the Mega/Sega CD model 1) one way to see if the system is getting any power is to remove the RF shielding to access the CD drive and gently move the Laser away from the centre. Then re-attach the Genesis/MD to turn the whole thing on again and watch to see if the laser resets itself to the middle. That will at least tell you if the CD is getting power. I have a broken Mega CD 1, too. But it's some other problem I haven't been able to figure out (my system just hangs on the bios screen). These things must be Sega's least reliable consoles. If you do decided to go ahead and replace the fuse, practice soldering on an old broken circuit board or get a soldering practice kit off ebay. It's an easy repair, but there's still potential to mess things up if you don't know what you're doing. Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted November 27, 2018 Author Share Posted November 27, 2018 Found some video on how to fix it, are these the right way to fix both CD systems? Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted November 27, 2018 Share Posted November 27, 2018 (edited) The first video is pretty accurate except he fails to mention that the battery is in fact a rechargeable battery. So you can't just stick a tabbed 2032 in there like you would from a game cartridge. Not unless you disable the charging circuit to the battery. But a dead battery won't prevent the CD from turning on. Also keep in mind that the Genesis initiates the power on request so make sure all the contacts on the external side connector are clean. Why is it that in none of these videos they use a simple multi-meter and just check for continuity on the fuse?! Bridging the gap to see if it powers on?! There is usually a reason behind why the fuse blew in the first place and it can be dangerous to use the 'stick a penny in the fuse holder' trick to get by even if only testing. Edited November 27, 2018 by -^Cro§Bow^- Quote Link to comment Share on other sites More sharing options...
Rick Dangerous Posted January 30, 2019 Share Posted January 30, 2019 Well my model 1 finally died. Get the Bios load screen but no access/ready lights...wondering if there is a simple fix or I need to send it off to Chris at his mod shop for repair. Quote Link to comment Share on other sites More sharing options...
Rick Dangerous Posted January 30, 2019 Share Posted January 30, 2019 Great news for anyone who needs a model 1 repaired: Hey Rick, I am actually one of the few people who will work on these. Apparently other modders avoid them or so I am told. I can do the full tune-up which is a recap, tray belt, gear replacement (Sony only), battery holder and battery, tray and laser calibration and alignment. If the laser itself is bad I can replace it but there is added cost. The model 1 is known for capacitor leaks and it's getting worse. Thank you, Chris Marvin Mobius Strip Technologies Follow us on Twitter: @mobiusstriptech Youtube: MobiusStripTech Website: http://www.mobiusstriptechnologies.com/ Quote Link to comment Share on other sites More sharing options...
CGQuarterly Posted February 3, 2019 Share Posted February 3, 2019 Coincidentally, my system is currently in Mobius' shop, getting that work done to it. Mine was still working alright, but I wanted to have the caps replaced before they leaked and caused damage, rather than after. It's pricey work to have done, but I would say that it adds to the value of the system, especially when I think we are going to see more and more of them dying from leaky caps. 2 Quote Link to comment Share on other sites More sharing options...
Austin Posted February 4, 2019 Share Posted February 4, 2019 I picked up a Model 1 a few weeks back from a local shop. It played games for about 20 minutes then crapped out on me, no longer reading discs. Fortunately the shop does repairs and they took it back and opened it up. It looks like the problem was a bad cap or two and a bad laser. They'll be fixing it at no charge, but it's been a hassle for me, no doubt. Like the PC Engine DUO, anyone that buys one of these should have it looked at ASAP even if the unit is currently functioning. It seems like they'll all go sooner than later. 1 Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted February 4, 2019 Author Share Posted February 4, 2019 Right now they are still not fix for financial reason as in no money. And I only have Sega CD three games, Star Wars Rebel Assault, Sewer Shark and Tomcat Alley and I had not played any of them since 2004:( Quote Link to comment Share on other sites More sharing options...
Rick Dangerous Posted February 15, 2019 Share Posted February 15, 2019 Chris (Mobius Shop) Says the all the caps in Sega CD Model 1's are going about now; and they should be replaced ASAP. Side note he is an AA member and is around if you need to PM him. Quote Link to comment Share on other sites More sharing options...
Jess Ragan Posted February 16, 2019 Share Posted February 16, 2019 Boy, this is a song I've been hearing for a while now, not just for the Sega CD but a crapton of other CD-based consoles. I had to get a GDEMU for my recently acquired Dreamcast, because the stupid drive wouldn't read discs properly. Tell me, are capacitors going to be a problem in the second model of the Sega CD? Because I have that one back in Michigan. Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted February 16, 2019 Share Posted February 16, 2019 Not as bad an issue in the model 2 since it doesn't use surface mount and uses standard through hole. However, the batteries are an issue. I recently did a battery mod on a SegaCD model 2 sent to me because it wasn't saving anymore of course. I found that the original battery had about 1/4 corrosion on its negative side and while it hadn't gotten to any of the main board traces, it wasn't long for it. So...you also have the batteries to worry about in both models. Quote Link to comment Share on other sites More sharing options...
Atariboy2600 Posted February 16, 2019 Author Share Posted February 16, 2019 So far I dont have a real understanding on how to de-solder and solder wires and still dont know where to fine the right parts. 1 Quote Link to comment Share on other sites More sharing options...
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