Sega CDX Strange Interference? - Sega-16 Forums

Blades · 12-11-2006, 10:48 PM

Hi,

I recently obtained a nearly mint CDX

and am enjoying it to the max. However, while playing I noticed that whenever the CD is being accessed (or sometimes randomly) These wave...things appear on screen. They don't really mess up anything but just interested, common problem or specific?

Thanks a lot,
Blades

P.S. I'm a complete newb here and this is my first post!

Flash1087 · 12-12-2006, 02:12 AM

Man, you're just here to make us feel bad for not having a CDX, right?

I keed, of course, and I'd love to welcome you to Sega-16. You'll love it here.

At any rate, I think the problem is likely in the video cable for it. It could be a little dirty, just plain old and worn, or not attached to the input on your TV all the way. Try poking at that, first.

Blades · 12-12-2006, 08:27 PM

Hi,

Thanks for replying! that's a good idea and I dug out my old rf adapter for genny 2. Same thing and it only happens when the cd lens is moving so my guess would be that the motor in charge of the lens gives off a charge or something and interferes with the video chip. If anyone has a segacd 1 or 2, can you tell me if it does the same thing? None of my friends have it (big surprise) and im probably the only one in my neighborhood with so much sega

.

Thanks, Blades

evildragon · 12-12-2006, 11:04 PM

this sounds more like a ground loop problem.. there's a faulty ground somewhere in it, it seems..

Blades · 12-12-2006, 11:29 PM

Umm...what? lol

Blades

evildragon · 12-12-2006, 11:52 PM

meaning, when the motors are running, it's causing interference on the circuit because I think there's a ground short somwhere..

Blades · 12-13-2006, 12:20 AM

AH Now I get it. Thanks. Is there anyway to fix it or not? Or does it indicate that the previous owner treated it bad? lol I love it anyway

Blades

evildragon · 12-13-2006, 12:25 AM

Quote:

Originally Posted by Blades

AH Now I get it. Thanks. Is there anyway to fix it or not? Or does it indicate that the previous owner treated it bad? lol I love it anyway

Blades

getting the CDX open is a pain.. something like this can happen from age, mis-use, or just plain defective.. it's never certain..

TheGZeus · 12-13-2006, 12:40 AM

You know, this happens with my model 1 SCD and High Definition Graphics genesis.
Only happens when the CD is being accessed, and only most of the time.
It's also pretty faint.

evildragon · 12-13-2006, 12:45 AM

yea, that's a ground loop.. in the case of the BIG Genesis setup, it can be anything, from bad connectors on the board, to bad shielding plates (those are usefull)

Blades · 12-13-2006, 12:50 AM

Hi,

Oh well, It's not really noticeable and I don't want to risk opening the CDX and it works 99% so I guess Ill just leave it.

Thanks for all your help,
Blades

Flash1087 · 12-13-2006, 02:17 AM

Yeah, that's not the kinda thing you wanna screw around with if you're not sure what you're doing. A friend of mine totally jinxed a Dreamcast trying to replace the lens once. I'm not sure what he did, but he couldn't even put it back together afterwards.

TheGZeus · 12-13-2006, 03:22 AM

Quote:

Originally Posted by evildragon

yea, that's a ground loop.. in the case of the BIG Genesis setup, it can be anything, from bad connectors on the board, to bad shielding plates (those are usefull)

Probably my sucky cable I made. The meterials and methods I used resulted in...suck.

Blades · 12-13-2006, 04:34 PM

suks for your friend huh? so it wont have any long-lasting effects right? such as it messing up the processors or something. It is kinda cramped in the CDX.

Blades

12-11-2006, 10:48 PM	#1
Blades ESWAT Veteran Join Date: Dec 2006 Location: US Posts: 630 Rep Power: 6	Sega CDX Strange Interference? Hi, I recently obtained a nearly mint CDX and am enjoying it to the max. However, while playing I noticed that whenever the CD is being accessed (or sometimes randomly) These wave...things appear on screen. They don't really mess up anything but just interested, common problem or specific? Thanks a lot, Blades P.S. I'm a complete newb here and this is my first post!

12-12-2006, 02:12 AM	#2
Flash1087 Devil In A Midnight Mass Kiwi Savior Join Date: Oct 2005 Location: Michigan Age: 22 Posts: 923 Rep Power: 0	Man, you're just here to make us feel bad for not having a CDX, right? I keed, of course, and I'd love to welcome you to Sega-16. You'll love it here. At any rate, I think the problem is likely in the video cable for it. It could be a little dirty, just plain old and worn, or not attached to the input on your TV all the way. Try poking at that, first. __________________

12-13-2006, 02:17 AM	#12
Flash1087 Devil In A Midnight Mass Kiwi Savior Join Date: Oct 2005 Location: Michigan Age: 22 Posts: 923 Rep Power: 0	Yeah, that's not the kinda thing you wanna screw around with if you're not sure what you're doing. A friend of mine totally jinxed a Dreamcast trying to replace the lens once. I'm not sure what he did, but he couldn't even put it back together afterwards. __________________

12-12-2006, 08:27 PM	#3
Blades ESWAT Veteran Join Date: Dec 2006 Location: US Posts: 630 Rep Power: 6	Hi, Thanks for replying! that's a good idea and I dug out my old rf adapter for genny 2. Same thing and it only happens when the cd lens is moving so my guess would be that the motor in charge of the lens gives off a charge or something and interferes with the video chip. If anyone has a segacd 1 or 2, can you tell me if it does the same thing? None of my friends have it (big surprise) and im probably the only one in my neighborhood with so much sega . Thanks, Blades

12-12-2006, 11:04 PM	#4
evildragon The Black Dragon Fantasy Zone Resident Join Date: Oct 2006 Location: Oviedo, FL Age: 23 Posts: 4,021 Rep Power: 20	this sounds more like a ground loop problem.. there's a faulty ground somewhere in it, it seems..

12-12-2006, 11:29 PM	#5
Blades ESWAT Veteran Join Date: Dec 2006 Location: US Posts: 630 Rep Power: 6	Umm...what? lol Blades

12-12-2006, 11:52 PM	#6
evildragon The Black Dragon Fantasy Zone Resident Join Date: Oct 2006 Location: Oviedo, FL Age: 23 Posts: 4,021 Rep Power: 20	meaning, when the motors are running, it's causing interference on the circuit because I think there's a ground short somwhere..

12-13-2006, 12:20 AM	#7
Blades ESWAT Veteran Join Date: Dec 2006 Location: US Posts: 630 Rep Power: 6	AH Now I get it. Thanks. Is there anyway to fix it or not? Or does it indicate that the previous owner treated it bad? lol I love it anyway Blades

12-13-2006, 12:40 AM	#9
TheGZeus WCPO Agent Join Date: Nov 2006 Age: 28 Posts: 476 Rep Power: 5	You know, this happens with my model 1 SCD and High Definition Graphics genesis. Only happens when the CD is being accessed, and only most of the time. It's also pretty faint.

12-13-2006, 12:45 AM	#10
evildragon The Black Dragon Fantasy Zone Resident Join Date: Oct 2006 Location: Oviedo, FL Age: 23 Posts: 4,021 Rep Power: 20	yea, that's a ground loop.. in the case of the BIG Genesis setup, it can be anything, from bad connectors on the board, to bad shielding plates (those are usefull)

12-13-2006, 12:50 AM	#11
Blades ESWAT Veteran Join Date: Dec 2006 Location: US Posts: 630 Rep Power: 6	Hi, Oh well, It's not really noticeable and I don't want to risk opening the CDX and it works 99% so I guess Ill just leave it. Thanks for all your help, Blades

12-13-2006, 04:34 PM	#14
Blades ESWAT Veteran Join Date: Dec 2006 Location: US Posts: 630 Rep Power: 6	suks for your friend huh? so it wont have any long-lasting effects right? such as it messing up the processors or something. It is kinda cramped in the CDX. Blades

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