Shared Projects by KPackLabs

Optocoupler PCB for use with either an SPST switch or a switching S-Video jack in conjunction with the CD4053 switch PCB for S-Video modding a Sony P-3A chassis CRT TV.

Bill of Materials:

• C1: 0.01uF 50V 0805 SMD Ceramic Capacitor
• J1: 3-pin 2.50mm pitch JST Connector
• J2 and J4: 2-pin 2.50mm pitch JST Connectors
• J3: 2-pin 2.54mm pitch DuPont Header
• R1: 10K ohm 1/4W 0805 SMD Resistor
• R2: 1.5K ohm 1/4W 0805 SMD Resistor
• R3: 100K ohm 1/4W 0805 SMD Resistor
• U1: PC817 4-DIP Package Optocoupler IC

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

An optocoupler PCB designed for S-Video mods for Sony CRT TVs utilizing the P-3 chassis (CX20193 or CXA1013 jungle chip). Because these TVs have a hot chassis, an optocoupler should be used to isolate the Chroma input from the hot ground.

Bill-of-Materials:

• C1 and C4: 0.01-1uF 50V Ceramic or Electrolytic Capacitors
• C2: 0.022uF 50V Ceramic Capacitor
• C3: 10uF 25V+ Electrolytic Capacitor
• C5: 4pF 50V Ceramic Capacitor (Optional)
• D1: BZX79C5V6 5.6V 500mW Zener Diode
• Q1, Q2, and Q3: BC550 NPN Transistors (EBC Pinout)
• J1 and J2: 2-pin 2.50mm Pitch JST Connectors
• J3 and J4: 3-pin 2.50mm Pitch JST Connectors
• J5: 4-pin 2.50mm Pitch JST Connector
• R1: 15K ohm Resistor
• R2: 100 ohm (for CXA1013) or 470 ohm (for CX20193) Resistor
• R3: 3.8K ohm Resistor
• R4: 75 ohm Resistor
• R5: 3.3-6.8 ohm Flameproof Resistor (Value may vary by TV - Most models use 6.8 ohm.)
• R6 and R8: 100 ohm Resistors
• R7: 4.7K ohm Resistor
• R9: 10K ohm Resistor
• R10 and R11: 1K ohm Resistors
• U1: 6N136 Optocoupler IC

An optocoupler PCB designed for S-Video mods for Sony CRT TVs utilizing the P-3 chassis (CX20193 or CXA1013 jungle chip). Because these TVs have a hot chassis, an optocoupler should be used to isolate the Chroma input from the hot ground.

Bill-of-Materials:

• C1 and C4: 0.01-1uF 50V Ceramic or Electrolytic Capacitors
• C2: 0.022uF 50V Ceramic Capacitor
• C3: 10uF 25V+ Electrolytic Capacitor
• D1: BZX79C5V6 5.6V 500mW Zener Diode
• Q1, Q2, and Q3: BC550 NPN Transistors (EBC Pinout)
• J1, J2, and J4: 2-pin 2.50mm Pitch JST Connectors
• J3: 3-pin 2.50mm Pitch JST Connector
• J5: 4-pin 2.50mm Pitch JST Connector
• R1: 15K ohm Resistor
• R2: 100 ohm (for CXA1013) or 470 ohm (for CX20193) Resistor
• R3: 3.8K ohm Resistor
• R4: 75 ohm Resistor
• R5: 3.3-6.8 ohm Flameproof Resistor (Value may vary by TV.)
• R6 and R8: 100 ohm Resistors
• R7: 4.7K ohm Resistor
• R9: 10K ohm Resistor
• R10 and R11: 1K ohm Resistors
• U1: 6N136 or SFH6136 Optocoupler IC