"Miguel Gimenez" wrote in message
...
I own an AIWA CD player (TZ92), 13 years old. In this time I have used it
about 50 hours (it was in my summer house), and I've changed the laser two
times, the first 6 years ago and the second this week. I don't want to
throw it, as it is part of a chain.

My questions a

- The life of the laser is related to working hours or installed hours? -
This short life, is normal?
- Is there any method for lengthening the life?

These lasers are a type of diode. It doesn't wear when it isn't in use, and
it doesn't simply go bad sitting on the shelf as can happen with
electrolytic capacitors.

Lifespans vary with makes/models. It's potluck, as some higher-priced
models are found to have shorter laser lifespans (on average) than some
cheaper models.

There is no technique for increasing a laser's lifespan. If you were to
reduce the diode's working current, it wouldn't track the disc properly.