The scope of this analysis was not to perform a complete cost analysis on the entire Sony WEGA Television, but rather to focus on the main Analog and Digital A/V I/O and processing function boards within the television. Excluded from this analysis, are all of the power supply circuitry and tube drivers, as well as the tube itself and all enclosures, housings, etc.
The core electronics inside were far more "disintegrated" than we might have expected. For example, a recent DLP television analysis from Samsung featured only two main A/V processing boards divided neatly into analog and digital functionality. The Sony model was far more modular, witheach "feature", such as HDMI input, on it's own modular board. This approach probably makes sense for Sony, allowing them to add or take away features across a wide range or televisions but achieve relatively high re-use and possibly use similar or identical boards across multiple models.
The scope of our analysis was therefore limited to analyzing and costing the core electronics PCBAs. Below are an overview of the boards included in this analysis. The assembly names were derived from the two letter callouts as printed on the boards by Sony.
Summary of PCBAs Analyzed
BY PC Assembly
Core Digital Processing Board
The BY PC assembly is more mysterious in function to us than the other PC assemblies, because this board is almost exclusively populated with Sony chips whose individual functions were not all positively identified (except for the A/D and D/A converters which are commercial product. It is assumed that the other devices are digital ASICs specific to this television. Furthermore, it is assumed to be a core digital signal processing board.
MZ PC Assembly
General A/V Processing
This board interfaced on one side with the UZ PC Assembly - see below - this board is the main A/V I/O board with RCA/S-Video connections, etc.) and on the bottom with one of the large power supply boards (not included in this analysis).
PA Module Assembly
The primary function of this module is defined primarily by the Silicon Image SiI9993CTG100 HDMI/ DVI Receiver.
Q Module Assembly
Digital & Analog Tuner & A/V Processing Board
Composed of the QM and QT PCBs (interconnected via board to board connection. The QT PCB served mainly as interconnect substrate for two rather high-end tuner modules. It appears that the QT Tuner Module B (whose functionality is defined by the ATI NXT2003 DTV Cable and Terrestrial Receiver) would be the digital tuner, and QT Tuner module A would likely be the analog tuner module.
The Q Module assembly serves not only a tuning function, but features (on the QM PCB) an ATI Xilleon 226 Multimedia Processor, one of the single beefiest and costliest chips in the set. In fact outside of this ATI chip on the QM PCB, memory chips are the only other significant components on this board.
UZ PC Assembly
This board serves mainly as the A/V I/O interconnect board comprised primarily of RCA & S-Video jacks - however this board also features some front-end A/V processing (Sony Audio/Video Switch). This board interfaces on one side to the MZ PC Assembly.