Bricolo said:
Bricolo,
Clean the lens.
If that doesn't help, You probably end up replacing it. (X49082031)
When I look in my database, it says the laser unit is utterly expensive. (About the value of what you can spend on a new cd-player!!!)
But, I admit my database isn't always correct.
Maybe someone else can answer that question about the cost of the unit.
There's also a flat cable that connect the laser unit with the PCB.
Could be the cause of your problem.
Try this: Insert a cd, and immediately push the forward button (>>) a few times, to select the fifth or sixth number on the disc.
Try to look at the RF signal if you manage to make the unit play.
You have a scope?
/Hugo - didn't know Sony lasers could be that expensive!
Thanks for your answear, Netlist 
are the symptoms caracteristics to a bad lens? (it can still detect the cd, and tell how much tracks it has)
another strange thing on the player is this
http://www.diyaudio.com/forums/showthread.php?s=&postid=136799#post136799
I thought it could be the problem, but other people don't agree
are the symptoms caracteristics to a bad lens? (it can still detect the cd, and tell how much tracks it has)
another strange thing on the player is this
http://www.diyaudio.com/forums/showthread.php?s=&postid=136799#post136799
I thought it could be the problem, but other people don't agree
Bricolo said:
The "orange thing" is indeed glue.
Others are correct here.
I wouldn't worry about it for the moment.
Did you try what I suggested in my previous post?
Did you clean the lens?
Do you have a scope?
/Hugo – can’t tell much more for the moment, has to now more about what Bricolo tried so far.
Ok
Our posts crossed each other.
Cleaning the lens is done with a little cotton stick.
Nothing-difficult here.
If that doesn't help:
Try to (very carefully) take the laser unit out.
Take out the axe and clean it.
Clean it very good; with some alcohol or isopropanol...
Remount the unit (careful with the flat cable) and apply a tiny bit of oil on the axe.
/Hugo
Our posts crossed each other.
Cleaning the lens is done with a little cotton stick.
Nothing-difficult here.
If that doesn't help:
Try to (very carefully) take the laser unit out.
Take out the axe and clean it.
Clean it very good; with some alcohol or isopropanol...
Remount the unit (careful with the flat cable) and apply a tiny bit of oil on the axe.
/Hugo
Attachments
You can also go to a camerashop and buy one of those soft
brushes with a rubber ball for blowing air that are used to
clean camera lenses. That is nicer to the lens than the cotton
sticks and doesn't leave any fibres. To the contrary you can
blow fibres off the lens with it.
If you use a wet cotton stick, as Hugo suggested, I would not
recommend water, since it may leave stains on the lens. It is
better to use isopropanol. (I cannot guarantee 100% that
isopropanol is always safe to use, but AFAIK it is not harmful
to any type of plastics and I have used it myself on CD lenses.)
brushes with a rubber ball for blowing air that are used to
clean camera lenses. That is nicer to the lens than the cotton
sticks and doesn't leave any fibres. To the contrary you can
blow fibres off the lens with it.
If you use a wet cotton stick, as Hugo suggested, I would not
recommend water, since it may leave stains on the lens. It is
better to use isopropanol. (I cannot guarantee 100% that
isopropanol is always safe to use, but AFAIK it is not harmful
to any type of plastics and I have used it myself on CD lenses.)
Christer said:
Wonder what the result is when you clean your ears with that?
I personally never use anything else then a bit of distilled water.
Long ago I saw a lens melting with ISo...
I kept cleaning cause I thought the lens was so dirty I couldn't get the dirt off.
But it was the lens melting...
/Hugo
Netlist said:
I personally never use anything else then a bit of distilled water.
Long ago I saw a lens melting with ISo...
I kept cleaning cause I thought the lens was so dirty I couldn't get the dirt off.
But it was the lens melting...
Yes, distilled water should be OK, of course, but avoid tap water
(or lake water or whatever).
If you really were using isopropanol and not some other
alcohol I take back my previous recommendation. I have never
heard of it harming any plastics and it is often recommended
for various technical cleaning because it is supposed to be
safe for plastics. Since the lens you cleaned must reasonably
have been made of plastic, it is obviously not always safe to
use isopropanol, however.
oops, I told this too fast
I had luck to be able to read a cd after only 2 minutes of scanning
with another try, it scanned fot 15 minutes without reading the track
when it scans, i can hear brr brr brrr brr brr brrr, like if the optical reader is going front and right and front and right... to find the right place to start reading
is this a known problem?
I had luck to be able to read a cd after only 2 minutes of scanning
with another try, it scanned fot 15 minutes without reading the track
when it scans, i can hear brr brr brrr brr brr brrr, like if the optical reader is going front and right and front and right... to find the right place to start reading
is this a known problem?
No, this is not correct. It is harmful for the coating on the lens and in the case of plastic lenses the lens itself can be damaged.
Clean the lens with some water ( distilled is the best and leaves no stains ) with a little bit of soap in it. The soap you use for dishwashing is OK, especially Dreft is good for cleaning lenses.
Dip the cotton stick in the water and pinch it to loose the surplus of water. That way the cotton stick can't drop water in the laser.
The coils hate water. Then make circles while cleaning and continue till the lens has that blue look again. After cleaning do this again with water without soap.
NEVER USE ALCOHOL ON CD LENSES, you will "clean" off the coating ! I am again surprised that there still are people that recommend this very wrong method.
Clean the rods with a cotton cloth and use some very light oil. a drop is too much, just a little will do. Like Hugo said.
If it still skips it is probably worn out and only replacing will solve problems.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.