Hi,

Using a balanced power supply is it possible the effect of "Negative"
presents in a CD player after being switched off may shorten the life
span of the laser unit (pickup lens)?

In normal power supply the switch usually cuts the hot(live) and so
no voltage should present in a Cd player. But in the case of balance
power supply the switch only cuts the +ve incoming current but the -ve
left undisturbed.

This I think affects the lifespan of the laser unit since I have
changed 4 over 8 or 10 years. My friend who uses identical equipment
but unplugs everything after usage got no problem with his pick up
lens. Same problem with different type of players. Voltage and other
issues are all eliminated.

Pardon my poor command of english.

Thanks.

Regards,
ST