[TechAssist] Re: Audio Fisher TAD993--CD problems

  • From: "adam miller" <adamt123@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 05 Sep 2001 13:00:08 -0400



ive seen this problem before with these silly cd players, ive worked on 
quite a few as a company i used to work for had an account with alrenco, 
anyway, problem was that the ribbon cables would start to go bad after 
taking these things aparts so many times, there was a certain procedure i 
had developed for tearing these things down, if i remember right the easiest 
way to put them together was to turn the thing upside down first, then 
insert the cd bottom half while holding the cd door open, it just slid 
everything better that way. seems like there was also a problem with muting 
transistors in these on the audio lines, but i dont remember for sure. but 
just check with scope, follow from the d/a converter > selector ic > power 
amp board.
>From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: Audio Fisher TAD993--CD problems
>Date: Wed, 5 Sep 2001 10:08:57 -0500
>
>
>I had similar problems with same model after making sure the assembly and
>alignment was correct, I found that the lever on the front panel that opens
>the cd slot door was out of place. It's a mater of holding the door and
>lever in the open position when mating the front to rest of the unit.
>Jim Myers
>jr.myers@xxxxxxxxxxx
>----- Original Message -----
>From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
>To: "Techsonline" <techassist@xxxxxxxxxxxxx>
>Sent: Tuesday, September 04, 2001 8:38 PM
>Subject: [TechAssist] Audio Fisher TAD993--CD problems
>
>
> >
> > This unit had a few problems with dust on lens and sensors. When I press
> > STOP, CD will pull from the lens, hesitate(I hear motor running) then be
> > pulled back to the CD Lens and pulled out again, sort of like VCR 
>carriage
> > LED problem.
> > When I use the duster, it worked fine a few times.
> > I also had  a problem with intermittent power to CD unit when I flexed 
>the
> > board with the big transformer. Resoldered the board took care of that
> > problem.
> > Main problem now is no audio from the CD player. After the solder job, 
>the
> > audio came back for a few seconds, then went out. This was the only time 
>I
> > had audio from the CD player. If I press tuner or cassette, I get audio
>just
> > fine.
> > Whoa! I hope someone can help with this complex problem, as I do not do
>much
> > audio, but this is for a regular customer. Why did the audio work, right
> > after I did the solder job on the main transformer?
> > I would appreciate any comments.
> > Thank you.
> >
> > Jeff
> >
> > FAX 1-413-280-0677
> > Jeff Dougherty
> > Intrepid Video & Electronics
> > 501 Luther Rd
> > Harrisburg, PA 17111
> > 717-909-8844
> > VCR tips, electronics info & general interest.
> > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> >
> >
> >
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