CD faults come under the same list as the DVD faults.The general faults are either power related, drive motor, or laser assembly.
Most faults in the major brands are worth repairing. However, in the really cheap brands, you may as well buy yourself a new item.But remember, you pay for what you get. Dont expect it to last past the next christmas.
What ever the fault, call me for a diagnosis.
I will certainly let you know if it is a major problem or not and whether it is worth repairing.