Posted on October 2, 2022 by Provo Electronics Case #543645/ 09.12.2022 Luxman L-100 amplifier. Low sound from both channels. Case #543645/ 09.12.2022 Luxman L-100 amplifier. Low sound from both channels. Switch MODE/LEFT/RIGHT replacement solved the problem. Post navigationPrevious post: Case #456718. Technics SU-7600 amplifier repair. No sound.Next post: Repair case # 125432. Pioneer SA-9500II amplifier – no sound, keeps blowing main fuse.