Long story short:
1. Dead HDMI Board (HT-R990 Receiver) right after 2 years of ownership
2. Goodwill repair offered by Onkyo. Unit sent to a service partner in Vienna.
3. Unit got back repaired (they probably just swapped the HDMI Board for another one)
4. It worked for approx. 6 months, today the HDMI board died again!
5. DIY Repair:
There are six 100μF 16V caps on this board. Four on one side (8912, 8915, 8918, 8921) and two on the other side (8901, 3104).
For replacement I used Panasonic FM series type A Low Impedance 100μF/25V 105°C caps.
Everything works fine now. Thank you very much for this thread!
Bottom line: Even though they tried, I'm done with this brand.
Last edited by Quillin; Yesterday at 11:41 AM.