Westinghouse K840CK15 Restoration

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September 24, 2024

Progress report 5 years after the completion of restoration by Mike Doyle and myself of our Westinghouse H840CK15 color set purchased at the 2018 Early Television Foundation annual convention and auction.

We set up our Sony A6300 camera on a tripod about 5 feet from the set in a darkened room during daylight hours over the past several days. Shot in RAW, 24 megapixels, focal length was set at 42 mm, aperture 6.5, shutter speed 1/15 second, ISO 1250. Developed by Lightroom for iPad, in TIFF, 16 bit, P3 color format compatible for my iPad display. The images were then cropped and dumbed down to JPEG to lower file size.

After initial setup adjustments 5 years ago, the service and user controls were never touched, nor did I open the cabinet. I just switch the set on and adjust the volume, that’s it. The channel is set to 3 for the digital ota converter box. The set is remarkably stable and does not drift. The set has developed grungy noise in the audio which comes and goes and a purity issue in the lower right hand corner. The vertical linearity at the top of the screen was there from the beginning and could not be eliminated. The CRT appears to as bright as when we purchased the set which has good emissions.

Only shot random broadcast images from NBC, CBS, FOX, and PBS. The white specks are window reflections. Video presents 8 new screenshots.

AFTER FIVE YEARS

https://videopress.com/v/4sZNjfNI

If you want to see the complete restoration, Part one: https://visions4netjournal.com/westinghouse/
Part2: https://visions4netjournal.com/westi...r-tv-part-two/