Common symptoms:

No audio
Popping or Crackling Sound

Models:

86280-53110  GM-8157ZT
86280-53140  GM-9697ZT
86280-53150  GM-9797ZT
86280-60500  GM-9297ZT
86100-48160  GM-8187ZT

Note: Please provide a full fault description when sending your unit in for repair.
Note: Repair Service Only