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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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3rd May 2019, 10:29 pm | #1 |
Nonode
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 2,004
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Binatone Monovison 01/9909
My latest addition to my collection was from someone who was clearing out his Dad's house & selling off the things he didn't need but had some value.
When I picked it up I was given a quick test of the usual screen of snow but it wasn't until I got home that I could give it the usual shakedown. I connnected it to my modulator & powered up, after tuning to the right channel I could get some decent sound but not much of a picture, but I could tell from the patterns that the horizontal hold was out of alignment. After a minute or so of turning I got something approaching a meaningful picture, & a quarter of a turn gave me a fairly clear image. I adjusted the brightness & contrast to improve things, & a quick check with tbe Transdiffusion Start Ups Volume 2 DVD helped with getting the settings even better. Considering this would have been a bottom end set when new electronically it's working well, with no obvious problems apart from the pots needing a little cleaning. Cosmetically it needs some work, with marks on the top of the case, which has yellowed slightly. Two of the knobs have lost their centre discs, the power / volume should have a red one. Some of the raised lettering needs some white paint, & it's Solid State badge has been lost. I would have guessed it was from late 1970s by the style, but one of the sites with service data says it's from 1983.
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5th May 2019, 10:59 am | #2 |
Nonode
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 2,004
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Re: Binatone Monovison 01/9909
Just a little update:
I've given the set a "creative soak test" watching The League Of Gentlemen (not the Royston Vasey one!) on it. It performed well, & I managed to get the brightness & contrast fine tuned. I've found the test cards I have on DVD don't have enough dark on dark segments, I get a set of display a card just fine, but when I've watching something with a lot of shadows they all look like silhouettes & I have to adjust the settings to make them look right. I have the case a wipe down with anti bacterial spray, which I find is good for removing grubby stains, & doesn't leave any residue.
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5th May 2019, 4:28 pm | #3 | |
Heptode
Join Date: Aug 2009
Location: High Wycombe, Bucks. UK.
Posts: 811
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Re: Binatone Monovison 01/9909
Quote:
Colour TVs always had black level clamp circuitry, otherwise the effect would be too noticeable in colour. However, most of the TV manufacturers did not bother adding a black level clamp to their monochrome sets. Philips were a notable exception. If you have a Philips-made monochrome TV from this era, put it side by side with the Binatone while viewing the same programme. You'll notice the difference. It is possible to add a DC restorer / black level clamp circuit, using only a few additional components. There was an article about this in Television magazine many years ago - I'm sure it's been posted here. A search should find it. |
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5th May 2019, 5:04 pm | #4 |
Pentode
Join Date: Nov 2017
Location: Birmingham, West Midlands, UK.
Posts: 171
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Re: Binatone Monovison 01/9909
Just adding to what Hamid 1 said, except for the Bush/Murphy A640 chassis and the Philips 210/300 mono sets I cannot remember any other UK mono TV having black level clamp/DC restoration. Certainly no mono portables had it as far as I know. When colour arrived it was a necessary feature. For any one who has fitted one of those LEDco replacement solid state CDA panels into a PYE 693/697 colour set you soon noticed the difference. A night time scene with a grey overall background, but with bright colours showing eg- a red London bus just did not look right.
Alan |
5th May 2019, 5:35 pm | #5 |
Nonode
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 2,004
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Re: Binatone Monovison 01/9909
Thanks for letting me know about black clamps, I sometimes notice the same with my Pye which uses a Philips TX chassis.
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5th May 2019, 6:00 pm | #6 |
Guest
Posts: n/a
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Re: Binatone Monovison 01/9909
Why did the late mono sets have no black clamp, easy enough to do.
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5th May 2019, 7:07 pm | #7 |
Hexode
Join Date: Mar 2014
Location: Dublin, Ireland
Posts: 398
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Re: Binatone Monovison 01/9909
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