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I have a techwood st67 3-disc changer that doesn't always recognize a cd much less actually read it... any ideas?

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The laser diodesI have a techwood st67 3-disc changer that doesn't - 2.gifwhich read the disc weaken over time and the lens can become dirty.Remove the case and you will see the 4mm dia. lens on the assembly riseup to read the disc when inserted. Eject the disc and lightly wipe thelens clean with a cellulose acetate Q tip or head cleaning cloth withjust a small amount of disc/optic/lens cleaner. Try playing the disc. Ifit will not read any discs then the laser diodes are to weak to read orthere is a malfunction in the digital signal processing board. Unless it is under warranty, you will need another unit.

Posted on Jul 19, 2009

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Yes, almost certainly a dirty laser, take the top off and twist a cotton bud on top of the little glass eye. even if you cannot see the dirt it will do the job most of the time,lasers do this with age also,so it could need replacing

Posted on Jul 19, 2009

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Error-99 shows on screen then turn system off


Error 99 is CD not up to speed. Either the CD is slipping, Defective CD, pickup is unable to read sectors and is either dirty pickup or pickup going bad.

Is it always the same CD you are playing? Is the CD smudged with finger prints or dirty? If not suspect the CD itself. This will require Repair or Replace, as E-99 is a classic malfunction & unit will need to be taken apart, "unless" there is a CD stuck in the Unit.

If you have loaded a Blank Cartridge & clicked Eject & found no extra CD, then you will need to have a Reputable Shop Repair Typically this is the Logic I.C. & / or the Servo Motor. Sometimes you can find the same Unit on E-Bay, Craigs List, etc for less than Repair

Changer Error Codes:
E-00: Poor Cable connection.
E-01: Magazine not properly set in changer.
E-02: No Disc in magazine.
E-03: CD does not have selected track number.
E-04: Disc is dirty, upside down or unreadable.
E-10: No data is recorded on the MD. The player plays the next disc automatically.
E-99: Changer malfunction, disc may be caught in machine or changer requires service.

Hope this helps. Your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

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