Sony KV-20FS12
June 10, 2023, 8:36 pm
January 10, 2025, 3:45 pm
Summary
20" model from Sony's flat screen Wega line. Has RF and composite inputs
Manuals
Media & Promo Materials
Notes
Unlike the 27" and larger BA-5 Trinitrons, this TV does not have native component inputs. However, its jungle chip is very versatile and can be modified for RGB and YPbPr component video. Please note that due to a different M board design and jungle chip, the RGB mod procedure for the 27" BA-5 Trinitrons doesn't apply.
Composite 240p Performance
by Eli Krause
For composite decoding this set uses a Toshiba TC90A49P, a 3-line digital comb filter. Depending on the console/revision, dot artifacting ranges from slight to severe, and blending effects may be broken. If the set has an s-video or component YPbPr input, then using a good external notch filter to decode composite instead and sending that to the set would blend all dithering patterns and remove nearly all dot artifacts (full guide here).

Gallery
| Specifications | |
|---|---|
| Brand: | Sony |
| Manufacturer: | Sony |
| Model: | KV-20FS12 |
| Series: | Wega |
| Viewable Size: | 20" |
| Inputs: | Composite, RF |
| Native Resolutions: | 240p, 480i |
| Horizontal Scan Range: | 15 kHz |
| Vertical Scan Range: | 60 Hz |
| Formats: | NTSC |
| Aspect: | 4:3 |
| Adjustments: | OSD Customer Controls, OSD Service Menu |
| Horz. Output Transistor: | 2SD2624 |
| Vertical Output IC: | TDA8172 |
| Jungle IC: | CXA2131AS, CXA2131CS |
| Comb Filtering: | 3-Line Digital |
| Comb Filter IC: | Toshiba, TC90A49P |
| Flyback: | 1-453-316-21, NX-1748//X4A4 |
| Tube: | Sony Trinitron , A51LPT70X , A51LPT50X |
| Heater Voltage: | 6.3v |
| Deflection: | 90° |
| Mask: |
Aperture Grille
|
| Tint: | Dark |
| Removable Glare Film: | No |
| Yoke: | 8-451-505-31 |
| Yoke Horz. Inductance: | 1.8487 mH (@ 10 kHz) |
| Yoke Vert. Inductance: | 24.41 mH (@ 100 Hz) |
| Yoke Horz. Resistance: | 2.624 ohm |
| Yoke Vert. Resistance: | 12.97 ohm |
| Speakers: | Stereo, 3W x 2 |
| Remote: | RM-Y173 |
| Chassis: | BA-5 |
| Weight: | 53 lbs (24 kg) |
| Application: | Consumer |
| Launched: | 2000 |
| MSRP: | 399 USD |
| Country of Manufacture: | Mexico |
| Mods: | RGB via Mux, Component YPbPr |
| Degaussing: | Automatic on Power-on |
