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NEC PC-Engine/SuperGrafx => PC Engine/SuperGrafx Discussion => Topic started by: Tatsujin on April 25, 2009, 11:59:56 PM

Title: DUO CD FAIL :(
Post by: Tatsujin on April 25, 2009, 11:59:56 PM

have the following trouble with one of my DUOs.

after pressing run, the cd-rom starts spinning but after a while (time out) it says, "please set a cd!" which means nothing less than it couldn't recognize that it is a value compact cd in there. tested it with a cd-rom game as well an audio cd -> same trouble.

the mechantronics seems to be ok:

-motor turns
-laser lights and focuses
-laser moves from left to right and vice versa

i also tried every potentiometer on the PCB in fullrange 360° turns to obtain a better run -> no chance.
also cleaned the laser lens -> still same.

someone ever faced that same trouble and can give me some other countermeasure advices?

thanx a lot :)

tatsu

Title: Re: DUO CD FAIL :(
Post by: Tatsujin on April 26, 2009, 03:00:31 PM

 :cry:

Title: Re: DUO CD FAIL :(
Post by: Black Tiger on April 26, 2009, 04:07:16 PM

I have a Turbo Duo with the same problem. I posted about it a while back and although there were several responses by people who know how to fix Duos, none could offer a definite solution.

Title: Re: DUO CD FAIL :(
Post by: Tatsujin on April 26, 2009, 06:10:10 PM

so did you try adjust the pots and everything?

probably there is only a chance to recover it by replacing the laser module. i know, some peeps here did this already with success.

Title: Re: DUO CD FAIL :(
Post by: elnino on April 26, 2009, 07:56:52 PM

My first Duo had the same problem, the laser is moving but cannot really read the cd. I think I could have fixed it by replacing the laser module but since I couldn't find any of them for a reasonable price, I just bought myself a new Duo.

Title: Re: DUO CD FAIL :(
Post by: Joe Redifer on April 26, 2009, 08:07:59 PM

Tats, you must have a thousand ways to play PC Engine games by now judging by your weekly hauls that you post.  Why worry about this one li'l ol' Duo when you have 50 others?  :)

Anyway, it sounds like the laser may be too weak since it can't recognize the reflection from the disc.  Turn up some random pots and see what happens.

Title: Re: DUO CD FAIL :(
Post by: Ravij on April 27, 2009, 10:57:18 PM

I had the same problem.

Replaced the laser myself and it was fixed.

Title: Re: DUO CD FAIL :(
Post by: BlackandBlue on April 28, 2009, 06:25:11 PM

I just replaced the laser in my CDROM², had the ribbons in backwards, and got the same message.  So, while I'm sure the ribbon cables are correct on your machine, unless you took it apart, there's a chance the laser is dead.  When i put them in the right way, it started right up.  If you are in the US, electronix.com has the laser units for $24.

Title: Re: DUO CD FAIL :(
Post by: boogiecat on May 02, 2009, 03:11:13 AM

Mine also kinda defective..

Title: Re: DUO CD FAIL :(
Post by: WoodyXP on May 03, 2009, 01:39:15 AM

Quote from: BlackandBlue on April 28, 2009, 06:25:11 PM

If you are in the US, electronix.com has the laser units for $24.

Word life.  Good lasers, I always keep a couple salted away just in case.  8)