Read Sharp HT-SL70 (serv.man7) Technical Bulletin online
SYMPTOM HDMI switching issue and back ground noise on the HT-SL70.
A charge will be made for those not returned within 28 days.
HT-SL70 only, C622 removal.
1. Remove the 4 screw at the back of the unit.
Load onto your PC, down loadable from the Technical Web site the “EPFlash”
software and also save to a known location the “HDMI update software”.