Improving old TV sets.

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Improving old TV sets.

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Geordie McBoyne

Senior Engineer in Charge

Posts: 1,114
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Location: Near Gateshead. Tyne and Wear. UK.

#22

25-12-2017, 10:57 AM

Here's a link to a KB Royal Star TV which displayed a complete lack of interlace. Model QVP20, the 110 degree CRT model. The final consensus was that the scanning coils are faulty. Oscilloscope traces proved that the frame synchronisation was correct on both picture fields. At lines 202 1/2 and 405.
https://www.vintage-radio.net/forum/show...p?t=121757&highlight=KB+Royal+Star+PVP20

Geordie McBoyne.

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Messages In This Thread

Improving old TV sets. - by Geordie McBoyne - 21-12-2017, 03:24 PM

RE: Improving old TV sets. - by ppppenguin - 21-12-2017, 04:23 PM

RE: Improving old TV sets. - by Geordie McBoyne - 21-12-2017, 05:12 PM

RE: Improving old TV sets. - by ppppenguin - 21-12-2017, 06:43 PM

RE: Improving old TV sets. - by Murphyv310 - 21-12-2017, 07:12 PM

RE: Improving old TV sets. - by Geordie McBoyne - 21-12-2017, 09:24 PM

RE: Improving old TV sets. - by beamcurrent - 22-12-2017, 10:45 AM

RE: Improving old TV sets. - by Murphyv310 - 22-12-2017, 11:18 AM

RE: Improving old TV sets. - by ppppenguin - 22-12-2017, 11:48 AM

RE: Improving old TV sets. - by Murphyv310 - 22-12-2017, 01:08 PM

RE: Improving old TV sets. - by Geordie McBoyne - 22-12-2017, 01:24 PM

RE: Improving old TV sets. - by peter scott - 22-12-2017, 01:28 PM

RE: Improving old TV sets. - by Murphyv310 - 22-12-2017, 02:30 PM

RE: Improving old TV sets. - by Geordie McBoyne - 22-12-2017, 06:02 PM

RE: Improving old TV sets. - by Geordie McBoyne - 22-12-2017, 09:43 PM

RE: Improving old TV sets. - by peter scott - 22-12-2017, 10:18 PM

RE: Improving old TV sets. - by Geordie McBoyne - 24-12-2017, 03:39 PM

RE: Improving old TV sets. - by Murphyv310 - 24-12-2017, 05:49 PM

RE: Improving old TV sets. - by colly0410 - 24-12-2017, 06:23 PM

RE: Improving old TV sets. - by Murphyv310 - 24-12-2017, 09:29 PM

RE: Improving old TV sets. - by Geordie McBoyne - 24-12-2017, 11:58 PM

RE: Improving old TV sets. - by Geordie McBoyne - 25-12-2017, 10:57 AM

RE: Improving old TV sets. - by Terry - 25-12-2017, 07:05 PM

RE: Improving old TV sets. - by ppppenguin - 25-12-2017, 07:47 PM

RE: Improving old TV sets. - by Refugee - 25-12-2017, 08:04 PM

RE: Improving old TV sets. - by Murphyv310 - 25-12-2017, 11:10 PM

RE: Improving old TV sets. - by Geordie McBoyne - 26-12-2017, 06:10 PM

RE: Improving old TV sets. - by Geordie McBoyne - 27-12-2017, 08:22 PM

RE: Improving old TV sets. - by Terry - 27-12-2017, 09:50 PM

RE: Improving old TV sets. - by Geordie McBoyne - 27-12-2017, 11:06 PM

RE: Improving old TV sets. - by Geordie McBoyne - 28-12-2017, 11:06 PM

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