Samsung DVD Laser lens SOH-D21U Optical Laser Pickup

(1) The protect welding spot of most of the laser head must be dissembled before installation ,then it can be used normally. (2) Please remove the protect welding spot with a antistatic soldering iron , if you use a common soldering iron , you must unplug the power when the soldering iron reaches a certain temperature to avoid the static. (3) More information buyers need to know: In order to prevent electrostatic damage to the laser tube, a protect welding spot (usually a larger joints on the circuit or on the FFC) is set on the laser head to make a short circuit of the supply of the laser ld feet to ground before leaving factory. The protect welding spot of the laser head must be opened before installation or heat the soldering iron to 250~280„ƒ, then unplug the power before you remove the welding spot. If this is not finished , the laser head could not be used normally. If you need , we can also help you open the welding spot before shipment. But for this way, some buyer may think it is a used laser. How to determine the laser head damaged or not: A damaged pickup general does not read the disk or disk read very difficultly, some of the lower quality of the CD cannot be read. When the device can be identified to the machine normally, generally the laser head has some problems. When the situation above happens , please open the machine and check the laser head models and then purchase the appropriate type of head to replace it.