Sony (BA-4C) KV-20FV10
Sony (BA-4C) KV-20FV10 CRT RGB mod
The Sony KV-20FV10 is a 20" flat-screen CRT television released in 1999, notable as one of Sony's first smaller flat Trinitron models. It is highly regarded for its crisp picture, S-Video support, and ability to be modified for RGB, though it is prone to common flat-CRT geometry issues.
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Contributors
Thank you to everyone who contributed to this guide:
- Benjamin Augustson's Sector — showcase author
- Matt Ross — contributor, CRT specs from CRT Database.
CRT safety
Caution
You can die doing this! So read carefully! CRT TV is not a toy. Do not open a CRT TV. If you don't have any prior knowledge about handling high voltage devices, this guide is not for you. CRT TV contains high enough voltage (20,000+ V) and current to be deadly, even when it is turned off.
Plan of attack
Manuals and Datasheets
Specs
- Year: 1999
- Format: NTSC
- Chassis: BA-4C
- Tube: Sony Trinitron A51LPT70X
- Jungle Chip: Sony CXA2131S
- OSD Chip: M3273MF-FLATSP
- Screen Size: 20"
- Inputs: Composite, S-Video, RF
RGB mux diagram
Prepare the mux diagram. If you are building your own circuit, this diagram should help.
Performing the mod
You can see pictures below with caption on how the RGB mux board and cables were mounted.
This mod uses the RGB mux board. This is optional, but will make your mod easier and stable. You can also create the circuit presented in the schematics above without the board. Please also checkout the mux calculator to play with your own values.
| On Sony CRT Chassis | KV-20FV10 |
|---|---|
| CRT RGB inline resistor | 5.6kΩ |
| CRT RGB ground resistors removed | 680Ω |
| 0.1μF caps replaced | No |
| Add diodes on chassis RGB lines? | Yes |
| Add blanking diode on chassis | No |
| RGB mux board | KV-20FV10 |
|---|---|
| Mux board RGB termination (R1, R2, R3) | 75Ω |
| Mux board RGB inline resistors (R4, R5, R6) | 1kΩ |
| Mux board Audio LR (R7, R8) | 1kΩ |
| Mux board blanking diode (R9) | 1N4148 |
| Mux board blanking ground resistor (R10) | open |
| Mux board blanking resistor (R11) | 1kΩ |
Compatible mux boards:
Pictures
Mod Photos
