Problem: cannot powerup. digital L/R no output.
Cause: Cold solder joint at power amp driver transistors / Digital filter AL24 IC NG.
Actions:
- Touch up all solder joint on power amp board (100%).
- Add small heatsink onto driver transistors.
- Replace digital filter by DF1704 (Denon DXP6001 cannot find).
- Cleaning and anti-rust all metal parts.
