Bought a Sega CD 1 brick, help me make it not so

Post by **Scooter** » Tue Jul 22, 2008 8:53 am

Well, it looks like I bought a brick shaped like a Sega CD 1. It was a Craigslist gamble that didn't pay off. I got a working Mk1 Genesis, some control pads and a game so it's not a total loss.

That said, are there any obvious things I could check on the SCD1? When I hook it all up, it just doesn't power up. No lights come on, the tray won't come out, nothing. I openned it up and there is nothing obviously wrong and I cleaned all the board connectors and the ribbon cable connectors and still nothing. Is there a fuse on these anywhere like on the SCD2? I didn't see one.

TIA

Post by **Curlypaul** » Tue Jul 22, 2008 9:09 am

This might sound obvious but do you have something else to test the plug with?

Post by **Scooter** » Tue Jul 22, 2008 9:27 am

Curlypaul wrote:This might sound obvious but do you have something else to test the plug with?

It didn't come with a power pack. I used the power pack from my other Sega CD and it works fine to power the other machine. The Genesis that came with it fires up and a game cartridge will boot if I try one but I get nothing out of the Sega CD.

Post by **xraydash** » Tue Jul 22, 2008 9:51 am

Did you peek inside? I recently found a Sega CD 2 at a thrift store that didn't work at first. Turns out the little silver metal stick thingie (sorry for the technical jargon

) that the laser slides back and forth on had been knocked loose from the plastic slot it sits in. Maybe it's something simple like that.

Post by **Scooter** » Tue Jul 22, 2008 10:56 am

I can get the tray to come out if I manually turn a gear inside the machine and the tray moves in and out (manually) without much trouble. The laser also moves easily back and forth if I manually turn the gears. Nothing seems jammed or out of place. I think the problem lies in the power board since it doesn't even light the LEDs on the front.

Post by **Metalcrack** » Tue Jul 22, 2008 11:11 am

Loose solder connection on the power pins, blown fuse (or really small value resistors), burnt components etc.?

Post by **Curlypaul** » Tue Jul 22, 2008 12:03 pm

Have you access to a multimeter or even a small bulb with 2 wires soldered to it? if you have then it can help to loacte the faulty component. Sorry I cant tell you exactly whats wrong, like a common fault or anything like that, tell me to shut up if I'm stating the obvious

Post by **Scooter** » Tue Jul 22, 2008 2:32 pm

Metalcrack wrote:Loose solder connection on the power pins, blown fuse (or really small value resistors), burnt components etc.?

The solder joints look fine, but I can test with my multimeter. Where is there a fues on this unit?

Post by **Scooter** » Tue Jul 22, 2008 7:56 pm

Someone on another board pointed me toward a thermal fuse on the power board. It was bad. I got it working! It loaded right up!

Post by **xraydash** » Tue Jul 22, 2008 8:55 pm

Scooter wrote:Someone on another board pointed me toward a thermal fuse on the power board. It was bad. I got it working! It loaded right up!

Good for you! I'll bet it was plenty satisfying getting it to work. I know I was psyched when I got mine going.