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From: Fin West on 2 Jan 2010 18:37
I have a Teac CD-P1260 CD player that has had very little use and no
abuse, and now doesn't play. It was bought 2 1/2 years ago, placed in
an equipment closet and not moved until now, and has been used about
10 hours. Now it shows No Disc for any discs we try to play.

I removed the cover and cleaned the lens. On inserting a disc I saw
the disc clamp into place but it doesn't rotate. Everything moves
freely and looks very clean.

Last week I tried tapping the main circuit board, and when I did the
disc started playing. When I tapped the drive itself, that also
started the player working. Each time I tried another disc I had to
tap again to get the player started.

I had to stop working on the player until today. Today tapping doesn't
work anymore. It looks like the player doesn't see a reflected light
signal and won't spin the disc.

Does anyone here have experience with this model player to know if
this is a common problem and where to look? I would also appreciate
suggestions from anyone with experience to suggest how I should
proceed to try to find what's wrong.

From: William Sommerwerck on 2 Jan 2010 18:05
Sounds like a cold solder joint.


From: Arfa Daily on 2 Jan 2010 20:23

"Fin West" <FW(a)nosuch.com> wrote in message
news:fplvj5hr4pk62640v80ik2filkuadalv4o(a)4ax.com...
>I have a Teac CD-P1260 CD player that has had very little use and no
> abuse, and now doesn't play. It was bought 2 1/2 years ago, placed in
> an equipment closet and not moved until now, and has been used about
> 10 hours. Now it shows No Disc for any discs we try to play.
>
> I removed the cover and cleaned the lens. On inserting a disc I saw
> the disc clamp into place but it doesn't rotate. Everything moves
> freely and looks very clean.
>
> Last week I tried tapping the main circuit board, and when I did the
> disc started playing. When I tapped the drive itself, that also
> started the player working. Each time I tried another disc I had to
> tap again to get the player started.
>
> I had to stop working on the player until today. Today tapping doesn't
> work anymore. It looks like the player doesn't see a reflected light
> signal and won't spin the disc.
>
> Does anyone here have experience with this model player to know if
> this is a common problem and where to look? I would also appreciate
> suggestions from anyone with experience to suggest how I should
> proceed to try to find what's wrong.
>

It may still be a dirty laser - but not where you can see it. Although the
lens may look clean (was it dusty before you cleaned it ??) you could have
dust on the CA mirror or pickup photodiode array, both of which are inside
the body of the laser. Another thing to try is to spin the disc with a
finger just after it clamps. Sometimes, lack of use can lead to a spindle
motor which is reluctant to start up on its own. Make sure that the laser is
free to move on its slides. With the unit switched off and no disc in, move
the laser by hand, away from the centre 'home' position, then power on and
make sure that the laser returns home, then burns (do not look directly into
the top of the laser - observe at a shallow angle and you should be able to
see a dull red glow in the lens) and that focus search takes place
correctly. The lens should move up and down probably three times, and in a
very 'positive' fashion. If all of this seems to take place correctly,
reinsert a disc. It might just play now ... (honest!)

If it doesn't play, you can try pressing on the main pcb with a biro pen or
some other insulated 'stick' whilst inserting a disc, and also poking the
laser flexiprint with the tip of a small screwdriver. Other than this,
without detailed knowledge of how a CD player works, and some decent test
equipment, you are unlikely to get far. I would say that it would be worth
trying a laser in it, although tap sensitivity is not generally considered
as a typical laser problem, but that aspect of your observations prior to
the total failure might be a bit of a red herring. It is of course easy for
an engineer to say "try a laser in it", as we have them in stock on the
shelf (it's probably a Sony KSS 213 series laser), but I wouldn't recommend
that you waste your money on buying a replacement, on the offchance that
might cure it ...

Arfa


From: Fin West on 3 Jan 2010 00:02
"Arfa Daily" <arfa.daily(a)ntlworld.com> wrote:

>
>"Fin West" <FW(a)nosuch.com> wrote in message
>news:fplvj5hr4pk62640v80ik2filkuadalv4o(a)4ax.com...
>>I have a Teac CD-P1260 CD player that has had very little use and no
>> abuse, and now doesn't play. It was bought 2 1/2 years ago, placed in
>> an equipment closet and not moved until now, and has been used about
>> 10 hours. Now it shows No Disc for any discs we try to play.
>>
>> I removed the cover and cleaned the lens. On inserting a disc I saw
>> the disc clamp into place but it doesn't rotate. Everything moves
>> freely and looks very clean.
>>
>> Last week I tried tapping the main circuit board, and when I did the
>> disc started playing. When I tapped the drive itself, that also
>> started the player working. Each time I tried another disc I had to
>> tap again to get the player started.
>>
>> I had to stop working on the player until today. Today tapping doesn't
>> work anymore. It looks like the player doesn't see a reflected light
>> signal and won't spin the disc.
>>
>> Does anyone here have experience with this model player to know if
>> this is a common problem and where to look? I would also appreciate
>> suggestions from anyone with experience to suggest how I should
>> proceed to try to find what's wrong.
>>
>
>It may still be a dirty laser - but not where you can see it. Although the
>lens may look clean (was it dusty before you cleaned it ??) you could have
>dust on the CA mirror or pickup photodiode array, both of which are inside
>the body of the laser. Another thing to try is to spin the disc with a
>finger just after it clamps. Sometimes, lack of use can lead to a spindle
>motor which is reluctant to start up on its own. Make sure that the laser is
>free to move on its slides. With the unit switched off and no disc in, move
>the laser by hand, away from the centre 'home' position, then power on and
>make sure that the laser returns home, then burns (do not look directly into
>the top of the laser - observe at a shallow angle and you should be able to
>see a dull red glow in the lens) and that focus search takes place
>correctly. The lens should move up and down probably three times, and in a
>very 'positive' fashion. If all of this seems to take place correctly,
>reinsert a disc. It might just play now ... (honest!)
>
>If it doesn't play, you can try pressing on the main pcb with a biro pen or
>some other insulated 'stick' whilst inserting a disc, and also poking the
>laser flexiprint with the tip of a small screwdriver. Other than this,
>without detailed knowledge of how a CD player works, and some decent test
>equipment, you are unlikely to get far. I would say that it would be worth
>trying a laser in it, although tap sensitivity is not generally considered
>as a typical laser problem, but that aspect of your observations prior to
>the total failure might be a bit of a red herring. It is of course easy for
>an engineer to say "try a laser in it", as we have them in stock on the
>shelf (it's probably a Sony KSS 213 series laser), but I wouldn't recommend
>that you waste your money on buying a replacement, on the offchance that
>might cure it ...
>
>Arfa
>

Thank you for this reply. The lens looked clean as could be before I
cleaned it with alcohol. It looked the same after I cleaned it. I did
spin the disc after it clamped and it spins freely and coasts a little
before it stops. I also did move the laser by hand and watched it
scurry back to its home position when I turned the power on. I didn't
think I could see the lens in its home position. Tomorrow I'll try to
observe the laser as you said.

I'll continue to try poking to see if I can find something repeatable.
I spent my entire work career in the electronics field and have many
years experience in the design, development and troubleshooting of
electronic equipment. While I worked I had access to all kinds of test
equipment, but now that I'm retired the only equipment I have is a
Heathkit VOM I built 50 years ago (it still works well). The laser is
a Sony laser but it may be difficult for me to replace it at home.

From: Mark Zacharias on 3 Jan 2010 00:24
"William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote in message
news:hhoqh2$h26$1(a)news.eternal-september.org...
> Sounds like a cold solder joint.
>
>

Or a shorted spindle motor...

Mark Z.

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