A quick look at a 1964 PYE 14U CRT TV
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- Опубликовано: 28 авг 2024
- I recently picked this up and it's in an untested state. I plan to restore this and also repair it, if it needs it.
There will be more videos on this in the future. Since I haven't really worked on something this old. I will be doing more research in the meantime before I tackle it. 
Игры
Fantastic cool piece!!!
Retro cool! Thanks! 🎻😎😎🙂😎
It was very cool and wonderful.Thank you for showing me!👍
Hi. If you're not familiar with valves (tubes), electrically a valve is rather like an FET, with the cathode corresponding to the source, anode to the drain and control grid to the gate. The grid is usually biased a few volts negative with respect to the cathode, maybe just two or three volts. You want to avoid accidentally biasing the grid positive, which will switch the valve on hard and cause damage to the valve and other components. This can happen if the grid is fed via a capacitor from the anode of the previous stage (high voltage), and the capacitor has become leaky, These caps are often of the 'waxie' type (paper and foil encased in wax) in vintage equipment, and should be replaced as a matter of course, as they're nearly always bad. The great thing about valve circuits is that you can test a lot of components in circuit when the valves are not powered up.
This come up on the home page. Old skool. 9 years before I was born. When I see the doors I thought, horrible, limit the viewing angle, then they slide open!. The other telly, thought to myself. 1981, So a few years out then. People crank old stuff up slowly through a variac or something, seen before or run the power through a light bulb, limits the power, never got that. Just tuning on is a no I think. Still a VHF telly antenna at a village not far away., Big H looking thing. Guess that a throwback to the good old days. Wooden case tv, had into the later 80's. First teletext think and 2 side, front facing speaker, big wide old telly, 1982. Remote control, as teletext would be :). Dad not buy cheap. Ferguson videostar VHS as well.
That is a really nice Tv set. I wish I have one of those Tvs.
As if by chance, your Sunday walk takes you past the radio and television shop, and your mistress wants to pull you along - she knows this trick, but then she gives in. After a lot of discussion, the moment comes when the new television is delivered. And yes, the children then had a lot to talk about at school.
You'll have no problem if you already can repair colour CRT sets. Lovely set and good luck with it.
I know I'm 3 months late here but a lamp-limiter is the way to go, to reform those electrolytic smoothing capacitors. A variac doesn't actually limit the current as such. Start by "breaking" the valve chain (if it's a series string, just remove one). Then start with a low wattage bulb, (e.g. 40W), wait for it to dim, then gradually up the wattage and repeat. If you have a proper lamp-limiter setup like I made, can go up to e.g. 400W (2x200W bulbs in parallel). Then you could re-fit the extracted valve and flick the bypass switch. Obviously some critical caps need to be checked/replaced so as to protect the valves. As for use on 405-lines, expect better results than on 625. (Clean/check the system switch!).
Hopefully you have a service sheet/manual for it. I noticed you struggled with the UHF tuner. I'm not sure if it just needs lubricating, or if the dial cord needs restringing...it is all shown in the service sheet.
We used to rent exactly the same model back in the 70's.
Richard
I didn’t think the British monarchy allowed their subjects to own TVs.
Shango approved