Summary

The first of Sony's 27" Trinitrons to use the BA-6 chassis. Design is, outwardly, the same as the previous KV-27FS100 and it uses the same tube. Internally, however, it is very different.

Literature

• User Manual
• Service Manual
• BA-6 Chassis Repair Training Manual

Notes

This TV does not completely disable velocity modulation

A common problem with Sony's flat CRTs is horizontal bowing, especially near the bottom edge of the screen. This is usually caused by poor yoke alignment, and can be corrected. For more information, see the "Adjusting a Flat CRT Yoke" page.

Like the other BA-6 chassis Trinitrons, this TV uses a one-chip design and cannot be modified to accept RGB. However, its component video quality is very clean and there is little to be gained by doing so.

Disabling Velocity Modulation

Most of Sony's flat Trinitrons contain a velocity modulation circuit. VM enhances dark outlines on screen, which helps hide composite dot crawl and can make TV and movies look better. However, it ruins pixel art and significantly degrades the appearance of 2D games.

In this model, turning off VM in the user menu does not completely disable it. To address this problem, go to the service menu and set "VMOF" to zero.

Composite 240p Performance

by Eli Krause

For composite decoding this set uses a Renesas M65582AUF, a 3-line digital comb filter/unified jungle chip. The blending of dithering patterns is inconsistent, and the dot artifacting is severe on all consoles tested. Recommend using an external notch filter to decode composite instead (such as the notch filter in a RetroTink) and sending that to the set's component input to remove nearly all dot artifacts and blend all dithering patterns.