Lexicon Senior HIFI audio amplifier machine does not work after power failure showed no display amplifier, the function keys are invalid, nor any sound, like as when not powered. Overhaul should first check the power supply circuit. Available multimeter to measure DC resistance across the power plug (power switch should be turned on), when there are hundreds of normal ohm resistor values. If the measured resistance is too small a number, and the severe heat power transformer, the power transformer primary circuit at a local short-circuit; If the measured resistance is infinite, you should check the fuse, the transformer primary winding is open, the power cord and plug whether the disconnection between. Mention technical support and accessories manufacturers, quality assurance. Data disorder, CPU damage, can be reprogrammed. We have top-notch technicians and advanced measuring instruments, repaired to restore the original factory sound quality. Lexicon Lexicon amplifier technology centers nationwide special dial phone 4007773202. E-mail: 2984014540@qq.com Q No.: 2984014540 Address: Tianhe District, Guangzhou Huangpu Road West, No. 6. Welcome to repair or mail! Entrance to parking!