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are 2 types of top damage that can occur to your discs.
Top Damage: Type 1
This is the easiest of the 2 types to identify.
Using the Light Test you will see pin holes or scratch lines
of light coming through your disc. This means the top 3 layers
(Graphics, Lacquer & Reflective Foil) of your disc have
been removed. This disc will most likely not play perfectly
again, even after it is repaired, but you will be able to
play other tracks in areas that have not been damaged.
Top Damage: Type 2
This type of damage is hard to see, especially
when the bottom side of your disc is badly scratched. When
this type of damage occurs, it leaves only single lines in
the top side of your disc. These lines resemble those made
with an ETCH-A-SKETCH toy. It is easier to see this damage
once the bottom side of the disc has been repaired. Damage
is caused by laying your disc, label side down on some surface.
Dragging or bending the disc while picking
it up begins to wrinkle the graphics, lacquer and reflective
foil layers. This places a permanent scar in the top 3 layers
of your disc. When you hold your disc up to the light, type
2 damage doesn't show. Once your disc has been repaired, you'll
see it using The Reflection Test.
Discs with this type of damage may play through
perfectly, unless the foil damage runs in a radial direction.
This will cause the laser to jump back or skip ahead, missing
the data in the damaged area of your disc.
The Light Test: Hold your disc 24 inches
away form a 40 watt light bulb, label side facing the bulb.
If you see light coming through pin holes or scratches, this
disc is scratched on the label or top side.
The Reflection Test: Hold your disc, bottom
or play side up. While looking at the scratches on the play
side, tilt the disc slightly, back and forth, and check each
scratch for a reflection or double appearance.
Scratches on the bottom of the disc will have
a reflection. Scratches or wrinkles in the top side will appear
as a single line only.
How
to Repair Scratched CDs | 2
Types Of Top Damage | Can
Your Disc Be Fixed? | Repair
and fix damaged CD |
How
to Tell if a CD Is Damaged | CD
Cleaning Solution - Making Your Own
|
Don't
Trash Your Scratched CDs...Repair Them!
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