Laurence Fisher tells us a bit about the 1938 HMV table top television, and why it isn't a good idea to try repairing one of these beauties without professional help.
While it's true the voltages inside are very dangerous the power is literally orders of magnitude below the level that will "reduce someone to a pair of shoes", still, neat to see old tech like that in working order.
@nickelodeonmuseum7303
3 жыл бұрын
This set used a 2000 volt mains transformer for its EHT supply! Not like the more modern fly-back EHT generators, which produced higher voltages but with no power behind them. The mains power transformer was far more lethal! I had one of these many decades ago.
@direct78broadcast26
7 жыл бұрын
How can all components be pre 1939? I repair post war and pre war radios and the wax capacitors never hold up very well not to mention the mains lead is he telling me everything is original ? I don't believe that for a second, nice set though!
@Roger.Coleman1949
7 жыл бұрын
I would guess what he means is that all the old capacitor bodies were gutted and stuffed with new stable components.With a set of this ' importance ' and value , it would have to be done with great sympathy to the appearance .I bet there are no bright yellow Radiospares capacitors visible !.Most people prepared and able to take on such a job should be aware of this as otherwise it would significantly be de-valued.
@zundfolge1432
3 жыл бұрын
correct, a wax cap from the 1930s is going to be a dead short or if its not a dead short, it will be shortly after its powered up. Wax paper caps are like roadkill.......roadkill rots and so do caps.
@DL-kc8fc
3 жыл бұрын
@@Roger.Coleman1949 Degradation does not occur unless the signal processing method is changed and a replacement scheme is used. This applies if the device is operated, ie it is functional. If the device is displayed as non-functional, it is a good idea to keep all the original components.
@RenaissanceEarCandy
6 жыл бұрын
I'm sorry but the thought of someone being reduced to a pair of shoes and half a tie is preposterous and somehow hilarious.
@Lampshade51
5 жыл бұрын
Gorgeous set. There were almost 20,000 TV sets in metropolitan London when the war broke out in the fall of 1939. BBC Television was way ahead of the USA at the time in telecasting production and programming.
@trevordance5181
5 жыл бұрын
You can search, online, the archives of the BBC's listings magazine The Radio Times, which also included television listings from November 1936, to see exactly what was on BBC tv any day you care to choose. That would of course include the prewar programme schedule.
@halfbakedproductions7887
Жыл бұрын
But the US eventually left us badly behind. They had full daytime TV by the early 1960s and were full colour by 1965. We were the first in Europe to go colour in 1967 and until 1972 there was actually a limit on how many hours per day TV could broadcast for. There was no serious weekday daytime programming until the early 1980s.
@edmondedwards6729
Жыл бұрын
the voltages in a set of that era were (probably) no more than an oscilloscope , 10-15kV with only a low current level, and I had numerous zaps over a lifetime of up to 30kV, being in the tv repair business...still here....that part of the program was urban legend, (but makes a good story). Otherwise a good presentation and love the beautiful wood cabinet design. It would be nice to see a real breakdown on the schematic and what the high voltage for accelerating the electron beam really was.
@mj6962
6 жыл бұрын
Dear Sir, the purpose of the hand held microphone is to pick up vocals of the talent. That requires you to put the mic IN FRONT OF THE DUDE TALKING!!! And near the mouth. Cheers.
@TVonthePorch
3 жыл бұрын
The restorer certainly DID NOT replace 70-year-old capacitors with 70-year-old capacitors. The notion is absurd on its face.
@joostderidder
2 жыл бұрын
I had exactly the same idea!
@televisionforever
Жыл бұрын
No way the electrolytics would last that long. Possibly the restorer restuffed the capacitors to preserve the original look.
@plan7a
3 жыл бұрын
Wow, that is one lovely looking set! I wonder if it is still working today (in 2021). Very nice cabinet work too!
@SO_DIGITAL
5 жыл бұрын
To all you young whippersnappers, this TV at the time was the most advanced and intricate piece of electronics available for sale to the general public. It was also VERY expensive for it's time. Think top end Apple X smartphone money.
@peterfullerton3473
2 жыл бұрын
STUNNING I WANT ONE
@CommentConqueror
2 жыл бұрын
This TV is worth a ton now
@roachtoasties
5 жыл бұрын
If this actually happened, there should be many archived news stories of only finding the neckties and shoes of disappearing television repairmen. Then there's the collateral damage. If there was nothing left but the ashes of repairmen, I would expect the whole house they were in also to be burned to the ground, along with everyone inside. If these televisions were in an apartment building, well there goes the neighborhood...
@nickelodeonmuseum7303
3 жыл бұрын
I think there was a bit of exaggeration there, but the 2000 volt EHT mains transformer could certainly kill you quite easily. No safety interlocks back then! Repairmen were more careful and better educated back then. I repaired one of these many decades ago.
@godfreypoon5148
Жыл бұрын
@@nickelodeonmuseum7303 Believe it or not, there were safety interlocks. Some sets had arrangements where a shorting bar would be driven across the EHT capacitor by spring tension if the rear of the set were to be removed.
@nickelodeonmuseum7303
Жыл бұрын
@@godfreypoon5148 I had one of this model many years ago. I don't remember anything of the sort!
@laurdy
14 жыл бұрын
i was in newcastle a few months back where i got to see a TV from 1936
@FroggyFrog9000
7 жыл бұрын
What did it sell for? because thats a good price for a TV of that vintage!
@tHeWasTeDYouTh
7 жыл бұрын
this is amazing!!!!!!!
@redneckbryon
3 жыл бұрын
Very Cool
@douro20
13 жыл бұрын
@NP4Mayans GEC and GE were two different companies, even though they both started as divisions of the Edison Laboratories.
@deepfreezevideo2
8 жыл бұрын
Did they get this presenter from Central Casting? While it is true that the B+ or "high tension" circuits contained very dangerous voltages, this pillock is exaggerating to the point of sheer absurdity. The H/T voltages for the CRT ran somewhere in the ten to twenty thousand range but there wasn't enough current to incinerate anyone or anything. So while it is true it could cause injury, possibly even severe injury, no one was ever reduced to ashes or "half a necktie".
@aidanlunn7441
7 жыл бұрын
He's referring to the EHT on the pre-war and early post-war sets, which was mains derived and not a product of the flyback in the LOP stage. Still much exaggerating the risk to touching the mains EHT, though. Yes, it *WILL* kill yo, but it would not actually burn up your body, your body will be there but stone cold.
@donsetliff7834
5 жыл бұрын
Still, we're talking about 220 volts, not a power substation. I've worked on many a tube TV and even radio broadcast transmitters and I'm still here. I've been bitten by 110 volt and even higher powerline and plate voltages and it's painful but luck was with me and I didn't vaporize.
@roachtoasties
5 жыл бұрын
If this actually happened, there should be many archived news stories of only finding the neckties and shoes of disappearing television repairmen. Then there's the collateral damage. If there was nothing left but the ashes of repairmen, I would expect the whole house they were in also to be burned to the ground, along with everyone inside. If these televisions were in an apartment building, well there goes the neighborhood...
@ukuleletyke
3 жыл бұрын
Nope, 230v would be the mains input voltage, but the tube on this set requires approximately 4-5kv on the final anode. Prior to high-impedance flyback EHT, this voltage was derived from a step-up transformer fed by the mains. Low-impedance source, meaning that the high voltage (and relatively high current) would kill you instantly. It’s correct to say it wouldn’t vaporise you, of course, but there were deaths among TV engineers of the day due to this risk. In fact mains EHT sets gained the nickname of ‘widowmakers’ for this very reason.
@deepfreezevideo
3 жыл бұрын
@@ukuleletyke Again, it's a massive exaggeration. The risks are well known but to state it in terms of half a necktie and pair of shoes is absurd.
@Michael-it6gb
8 ай бұрын
I wonder if there are any working electrical TV set left from 1920s, with a camera tube of that time. I know it's unlikely because most of them were in prototype stage at labs around the world.
@NP4Mayans
14 жыл бұрын
I have tried to provide a link to an American Prewar TV made by GE in 1939. GE was known as GEC in Britain. HMV in Britain was RCA in the US; so many makers had international operations. It also has a Brute force killer transformer like ALL prewar TVs. The GE American table-top set was attached to a separate radio to get the sound. Original price about $250, or 1/3 of a car.
@aidanlunn7441
7 жыл бұрын
GE in the US and GEC in Britain were two completely separate companies.
@barrieuk
6 жыл бұрын
EMI set up RCA . The link with the EMI HMV brand is tenuous . May as well join in JVC...
@NoOdL3z18
12 жыл бұрын
Where do I plug in my Xbox?
@MrHBSoftware
5 жыл бұрын
to the grid of the video amplifier tube...:) yes you can actually connect it there and it will display on the tv...
@The_Studioworkshop
5 жыл бұрын
No you can’t
@bobboscarato1313
5 жыл бұрын
Color TV sets with a mechanical disc where unsuccessful since they were incompatible with black and white pictures among other problems.
@Synthematix
Жыл бұрын
Yea these sets had high voltage around the CRT but its low current, it would take abut 30,000v at 7amps to turn someone to dust lol, a cars ignition system is more lethal than a tv, if anything in a TV the capacitors are the deadliest things to work with, those things will kill you no question.
@catalino8010
3 жыл бұрын
im flabergasted , so old
@stringcus
Жыл бұрын
I suppose the guy just vaporised! I once touched one and it threw me through the window and over Wembley stadium.
@HailAnts
3 жыл бұрын
I didn’t think the Brits made any non-mechanical TVs before the war..
@zardoz2006
3 жыл бұрын
405 line electronic system began by the bbc in November 1936.
@robbieberry9700
3 жыл бұрын
Very dangerous to mess around with unless you know what you are doing
@marcse7en
Жыл бұрын
Others have said it, but the tale of somebody being reduced to a pair of shoes by the high voltage in a TV like this is UTTER RUBBISH!
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