DENON AVR-X2800H No Video Pass Through
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
86%
CONF
|
HDMI Main Digital PCB Assembly
The main digital board contains the HDMI switching ICs and the HDCP authentication engine. Physical failure occurs when the TMDS/FRL (Fixed Rate Link) differential pair pathways are compromised by thermal fatigue or voltage spikes, preventing the receiver from stripping and re-clocking the video signal for pass-through. Replacing the entire PCB ensures all HDMI 2.1 logic and HDCP 2.3 encryption keys are restored.
|
|
|
9%
CONF
|
Certified Ultra High Speed HDMI 2.1 Cable
Modern 4K/120Hz and 8K signals require 48Gbps bandwidth; older 'High Speed' cables cause a handshake timeout or EDID mismatch, leading the AVR to drop the video signal to protect the audio stream. A certified cable ensures the physical layer can maintain the high-frequency differential signaling required for the AVR to authenticate the signal pass-through.
|
|
|
5%
CONF
|
Replacement Remote Control
A functional remote is required to access the 'HDMI Signal Format' sub-menu, which is distinct from the standard Setup menu. In many cases, the 'No Pass Through' is a logic block caused by the receiver being set to 'Standard' format while receiving an 'Enhanced' 10-bit or 12-bit signal, which the internal logic gate interprets as an incompatible or corrupt data stream.
SKU: RC-1253
|
DIY Repair Guide
Watch exactly how to replace the HDMI Main Digital PCB Assembly.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.