S-Video switch for Sony P-3A chassis TVs, designed to simplify S-Video mods for these sets by using either an SPST switch or a switching S-Video jack. Based on the schematic for the K board from a Sony KV-27TS30. This board is designed to replace the CX20061 video switching IC on these TVs.

Bill-of-Materials:

• C1 and C8: 0.01uF 50V 0805 SMD Ceramic Capacitors
• C2: 1000pF 50V 0805 SMD Ceramic Capacitor
• C4, C5, C6, and C7: 10uF 16V+ 0805 SMD Ceramic Capacitors
• C9: 10uF 16V+ Electrolytic Capacitor
• D1 and D2: 1n4148W SOD123 Package SMD Diodes
• J1: 2-pin 2.50mm pitch JST connector
• J2: 3-pin 2.50mm pitch JST connector
• J3: 8-pin 2.54mm pitch DuPont header (Pins 2 and 8 can be keyed off, as they’re not connected.)
• J4: 3-pin 2.50mm pitch JST connector (Transplant connector A-4 from the TV chassis to this footprint.)
• J5 and J6: 4-pin 2.50mm pitch JST connectors
• Q1, Q2, Q3, Q4, Q7, Q8, Q9, Q10, and Q11: 2SC1623 NPN SOT-23 Package SMD Transistors
• Q5 and Q6: DDTC144ECA NPN Pre-Biased SOT-23 Package SMD Transistors
• R1, R3, R5, R7, R11, R19, and R21: 100K ohm 1/4W 0805 SMD Resistors
• R2, R4, R6, R8, R12, and R20: 100 ohm 1/4W 0805 SMD Resistors
• R9, R10, and R17: 10K ohm 1/4W 0805 SMD Resistors
• R13: 2.2K ohm 1/4W 0805 SMD Resistor
• R14, R15, R16, and R18: 1K ohm 1/4W 0805 SMD Resistors
• R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, and R33: 15K ohm 1/4W 0805 SMD Resistors
• U1: CD4053B SOIC-16 Package Switch IC