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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: kisaku on November 25, 2016, 06:25:31 PM

Title: DUO R disc spin but doesn't move
Post by: kisaku on November 25, 2016, 06:25:31 PM

I have a Duo R, Hucard works well, good sound too.
The cd spinning but no move , then PLEASE SET DISC comes out.
I tried to change some pot values but NOTHING change. I think motor or gears don't move... Bad caps or lens or motor??

Title: Re: DUO R disc spin but doesn't move
Post by: thesteve on November 25, 2016, 07:29:29 PM

the duo-r will spin before its ready
is the laser center or edge?
if edge it could just be stuck

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on November 25, 2016, 09:35:28 PM

Quote from: thesteve on November 25, 2016, 07:29:29 PM

the duo-r will spin before its ready
is the laser center or edge?
if edge it could just be stuck

Edge....so how can i move it? It is not moving , should i force it? :) Thanks

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on November 26, 2016, 03:57:22 AM

I tried to move the laser to the center and it was ok, then motor moved well, but spin is slow and doesn't load the disc. The motor voltage is 3.3v (with tester). Do you think is it a laser or a caps problem?

Title: Re: DUO R disc spin but doesn't move
Post by: thesteve on November 26, 2016, 06:40:31 PM

could just be pots now
the duo and duo-r will get stuck if they seek too far to the edge (generally from a focus error)

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on November 27, 2016, 09:31:39 AM

i tryed to change some pots but nothing changes....what pot mainly? spin is always the same...

Title: Re: DUO R disc spin but doesn't move
Post by: thesteve on November 27, 2016, 12:26:33 PM

well back to start
set the pots back and see what it does without disk again

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on November 28, 2016, 09:45:27 PM

It's the same. Spin slowly, then please set disc.

Title: Re: DUO R disc spin but doesn't move
Post by: thesteve on November 29, 2016, 07:06:15 PM

without disk whats it doing?

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on December 01, 2016, 10:49:34 PM

Without disc the lens goes up and down searching.

Title: Re: DUO R disc spin but doesn't move
Post by: thesteve on December 02, 2016, 04:33:31 AM

OK good
Just fixed this issue on a black pce duo
It was a floating ground under the cxd1167
Have also seen bad vias around the cxa1081, pot adjustment or bad chips cause this

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on December 07, 2016, 09:25:44 AM

i just putted the laser starts extreme other side and this WORKS, while if it starts from center it doesn`t....

Title: Re: DUO R disc spin but doesn't move
Post by: Keith Courage on December 07, 2016, 01:59:36 PM

hmm, maybe a bad stop switch or weak lens motor?

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on December 08, 2016, 05:29:03 AM

The problem is only in the START. When it starts it works perfectly....

Title: Re: DUO R disc spin but doesn't move
Post by: Keith Courage on December 08, 2016, 06:40:56 AM

 lens Motors will do this sometimes.however, if left running for a while the motor should jam up again at some point.

another possibility since you said you had to move the lens all the way to the far end. Maybe there is a short in one of the wires for the lens.

Title: Re: DUO R disc spin but doesn't move
Post by: choijimmy on December 09, 2016, 09:33:14 AM

I have similar thought as Keith,  sounds like some mechanical problem.  I have some brand new stop switch and send you for free.  I also think(need to double check) I have spare old lens motor (but withOUT the disc holder plate), just motor,  also can send you for free,  let me know if you want to try.

Thanks

Title: Re: DUO R disc spin but doesn't move
Post by: kisaku on December 10, 2016, 04:35:06 AM

Yes i think it is the stop switch problem. Is it easy to change?

Title: Re: DUO R disc spin but doesn't move
Post by: choijimmy on December 10, 2016, 01:03:24 PM

Quote from: kisaku on December 10, 2016, 04:35:06 AM

Yes i think it is the stop switch problem. Is it easy to change?

yes, very easy. two mintues work. PM me you address and I will send you one for free. thanks!

Title: Re: DUO R disc spin but doesn't move
Post by: thesteve on December 10, 2016, 06:30:26 PM

Stop switch should be obvious
When it starts it will move left till it reads the switch
Bad switch will move left and stop
Good switch will move left and appear to bounce off the switch
If it's a bad motor it will just sit there till you move the gear and suddenly start working