Summary

27" flat tube consumer TV. Among the last in Panasonic's Tau series, this model was manufactured by Orion instead of Panasonic themselves. While it has a slightly different chassis, it shares most of its basic design (including the jungle chip) with the Toshiba 27AF45.

Manuals

• User Manual
• Service Manual

Notes

This TV (and some others made by Orion) often has the chroma out of phase with the Luma signal, resulting in blurriness and misaligned colors. This can be corrected in the service menu by adjusting CB DL and CR DL.

Unlike some Orion-built TVs, the A/V inputs can be selected using the channel up/down buttons.

The TV in these photos has been modified with an RGB SCART input. As such, the SCART connector on the back is not normally found on this model.

Disabling Velocity Modulation

This TV features 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.

Unfortunately, this cannot be turned off in the user or service menus and must be physically disconnected. To do this, unplug the cable from connector CP852A on the neck board.

Composite 240p Performance

by Eli Krause

For composite decoding this set uses a Toshiba TC90A45FG, a dynamic 2-line digital comb filter introduced in 1997. Depending on the console/revision, dot artifacting ranges from moderate to severe, blending effects may be broken, and edge artifacts are mostly moderate to severe. An example of the many dot artifacts are highlighted in the second picture below in red. If the set has a higher bandwidth input such as s-video or component, then using an external notch filter to decode composite instead and sending that to the set would blend all dithering patterns, reduce edge artifacts, and remove nearly all dot artifacts (guide here).