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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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18th Feb 2019, 2:13 am | #1 |
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Custom TV
Hi,
I have a tiny 5" black and white CRT TV (with AM/FM radio) It's the generic type, with many different brand names but I was just thinking about it, and how I don't exactly love the look of it. I had the idea of making a custom 1970s styled casing for it, I was just wondering, how hard would it be to re-case the electronics inside. I'd still be using the same speaker, CRT and PCB, so I shouldn't imagine it'd be too hard. I'm not too interested in the radio part, so if need be it can go if the radio and TV doesn't share any circuitry. I can easily make the casing out of wood. It's just an idea and nothing too serious, but if it's easy enough, I will probably end up doing it. Thanks |
18th Feb 2019, 3:32 am | #2 |
Octode
Join Date: Jan 2014
Location: Oban, Scotland, UK.
Posts: 1,118
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Re: Custom TV
Provided the crt is properly supported the world is your oyster as far as casing it is concerned!
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18th Feb 2019, 3:51 am | #3 |
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Re: Custom TV
I’ll be using everything that’s inside the original plastic casing, so i will need to make some supports for it, but that should be fairly simple.
I’m even more keen on the idea now! Does anyone have any circuit diagrams/schematics for this set? I believe they’re refered to as “5.5” black and white TV with AM and FM radio” I’ve seen a service manual only for these. Thanks |
18th Feb 2019, 5:56 am | #4 | |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,190
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Re: Custom TV
Quote:
Do you mean that you know where to get the service manual? I've never seen any official technical information on these little TVs. |
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18th Feb 2019, 9:18 am | #5 |
Pentode
Join Date: Feb 2019
Location: Worcester, Worcestershire, UK.
Posts: 183
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Re: Custom TV
I would be interested in a copy of your drawings. I have 2 of these 5.5" sets in a box somewhere, both have faults.
I will PM you an email address. |
18th Feb 2019, 9:24 am | #6 |
Nonode
Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
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Re: Custom TV
The Steepletone BTV510 had an AV input, not all 5" sets had.
Using one IC for so many functions I tend to see these sets as not really serviceable. Here's the circuit ; |
18th Feb 2019, 9:41 am | #7 |
Nonode
Join Date: Aug 2007
Location: South Bradford, West Yorkshire, UK.
Posts: 2,571
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Re: Custom TV
I posted the circuit of a similar TV in this thread. it also includes some information from an article from Television.
https://www.vintage-radio.net/forum/...527#post156527 The circuit is very similar to the Steepletone. Keith |
18th Feb 2019, 10:26 am | #8 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,190
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Re: Custom TV
The Nikkai one has 3 ICs on the TV PCB (video IF; Sound IF and Audio Amplifier; Vertical Deflection) and another on the radio PCB (combined AM and FM radio receiver thing). The horizontal deflection is all discrete transistors. I did manage to find data sheets on all the ICs on-line
It has audio and video input phono sockets too. |
18th Feb 2019, 12:00 pm | #9 |
Octode
Join Date: Mar 2006
Location: Co. Durham, UK.
Posts: 1,111
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Re: Custom TV
KarenO of this parish has had some experience of customising these!
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18th Feb 2019, 3:09 pm | #10 | |||||
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Re: Custom TV
Quote:
I’d love one please! I’ll PM you my e-mail adress after this I found one somewhere, I cant find it right now, but when i switch my PC on i’ll find it in my downloads and send it to you, if you’d like. Thanks Quote:
They do look quite small and fiddly. but mine seems to be fine, with some mains ripple, which is being sorted with a new PSU. Thanks Quote:
I’ll definitely need it as im sure others will too! Thanks Quote:
Just want to clear things up before I customise it, and possibly ruin it as I dont exactly want to keep the radio, unless it’s needed. Thanks Quote:
Thanks |
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18th Feb 2019, 3:27 pm | #11 |
Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,549
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Re: Custom TV
If it is a single PCB for radio and TV just leave the switch set to TV and do not bother to fit an external switch.
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18th Feb 2019, 3:29 pm | #12 |
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Re: Custom TV
Good idea! I know that there are two PCBs, one is definitely for the TV alone, but by sounds of it, the radio PCB has some TV related components, too.
Thanks |
18th Feb 2019, 4:15 pm | #13 | |
Octode
Join Date: Mar 2006
Location: Co. Durham, UK.
Posts: 1,111
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Re: Custom TV
Quote:
Some are for vertical scanning! |
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18th Feb 2019, 4:30 pm | #14 |
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Re: Custom TV
Oh okay! I didn't realise you could get lower than 405 other than Bairds 30 line.
That sound's quite interesting! Thanks |
18th Feb 2019, 4:54 pm | #15 | ||
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,190
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Re: Custom TV
Quote:
Aerial Ground +3.3V power (this comes from the 12V line via a resistor and is clamped to 3.3V by a zener diode on the radio PCB) AM/FM switching (a DC level from the band switch on the TV PCB) Audio (into the Sound IF/audio IC on the TV PCB) I am sure I ran the set with the radio PCB removed when I was investigating it. |
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18th Feb 2019, 6:19 pm | #16 |
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Re: Custom TV
Would I not need to keep it for sound from the TV? Or is this also included on the TV PCB?
Thanks |
18th Feb 2019, 6:29 pm | #17 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,190
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Re: Custom TV
I can only comment on the PCBs that are used in the Nikkai-badged version.
In that set, the TV PCB contains all the audio circuitry for the TV side, including the power amplifier to drive the speaker. You will get TV sound with the TV board alone. The radio PCB is effectively an AM/FM tuner. It feeds audio into the power amplifier on the TV PCB to drive the speaker. So the radio PCB on its own is not a complete radio. It needs the TV PCB to work. |
18th Feb 2019, 6:33 pm | #18 |
Hexode
Join Date: Jun 2005
Location: Aberystwyth, Wales, UK.
Posts: 358
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Re: Custom TV
I posted a similar circuit her:
https://www.vintage-radio.net/forum/...3#post453893It also includes the radio section. Dave GW7ONS |
18th Feb 2019, 7:51 pm | #19 | |
Dekatron
Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,676
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Re: Custom TV
Quote:
It's interesting you should say that... ...Aaron, did you ever see the film "Grease"? the futuristic TV set at Rydell High School is called a Philco Predicta. I always thought it would be cool to make a copy.
__________________
-- Graham. G3ZVT |
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18th Feb 2019, 8:41 pm | #20 |
Octode
Join Date: Jun 2018
Location: Essex, UK.
Posts: 1,306
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Re: Custom TV
I have seen Grease, quite a few times.
I love the whole range Philco produced (I was more into 50s Americana before I got into UK retro so I've seen these sets many times, I even have some photos of different models on my PC) That'd be quite an interesting idea to make a copy, I'll keep that in mind! I don't know how I'd make it though, as I don't think wood would be a suitable CRT housing on this design, and I have no means of shaping metal or plastic. It's definitely a really cool idea and I've never thought of that! (And probably wouldn't have) Thanks! |