Finding a single "paper" or official PDF manual for this specific board can be difficult as they are primarily distributed to service technicians, but you can find technical data and firmware files through the following resources: Technical Specifications : TP.HV553.PC821 Resolution Support : 3840x2160 (4K UHD)

: 4-core processor with integrated WiFi for Smart TV functions. Documentation and Resources

The identifiers you provided refer to the motherboard, a common "three-in-one" (power, LED driver, and logic) board used in 65-inch 4K Smart TVs like the MAGIC 65JP65UASG .

: Constant current output of approximately 360mA with a voltage range of 45-180V DC.

: For hardware troubleshooting like "No Power" issues, technicians often use video tutorials such as this TP.HV553.PC821 Diagnosis & Repair on YouTube to identify common component failures.