Repair of a 1970 Magnavox 12" vacuum tube B&W TV (rebadged Sanyo)

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  • Опубликовано: 17 ноя 2024

Комментарии • 32

  • @radio-ged4626
    @radio-ged4626 9 месяцев назад +2

    It's good to see someone changing parts and observing the effect rather than just blowing through the caps. The end result is the same but the journey is much more interesting. And if you make a mistake when blowing through it's far more difficult to work out what went wrong. Nice work.

  • @quantumleap359
    @quantumleap359 9 месяцев назад +2

    Good repair video Bryan. Those Japanese b&w sets of that era were good performers and were priced fairly.

  • @markmarkofkane8167
    @markmarkofkane8167 9 месяцев назад +2

    I was a kid in the early to mid 70's. We had a used black and white Philco "Caravan" portable 19 inch tv. It was meant as a spare, in case our 25 inch color console quit working.
    I used to look down the ventilation slots and observe the glow of the tubes, feeling the warmth, and it had a certain smell, not a bad smell, just a smell. It used to give me a good feeling looking at the tubes and feeling the heat in my face.
    Anyway, nice Magnavox.

  • @robinsattahip2376
    @robinsattahip2376 9 месяцев назад +3

    What's more fun to watch, Shango going through every Los Angeles AM radio station or radiotvphononut going through the Meridian Mississippi cable channels. (just kidding, smile, thanks for a good video).

    • @thethirdrail8397
      @thethirdrail8397 9 месяцев назад +1

      Hey, we may never see those stations again once they go away. someday that is! it could be today, this month this year, Next years... etc..

    • @robinsattahip2376
      @robinsattahip2376 9 месяцев назад

      @@thethirdrail8397 You're right, I like to listen to the old clips of 93KHJ and 77 WABC (lived in NY and LA as a kid) on RUclips, especially the Real Don Steele. That's back when both music and radio were great.

  • @jeffreyhickman3871
    @jeffreyhickman3871 9 месяцев назад +2

    Hey, Mr. Radiotvphononut, that’s the year I was born!! Although TV’s, 📺 radio’s and record players started taking a downhill decline on quality at this time, these TV’s 📺 are certainly better than Walmart’s flatscreen 📺 television set of today. Those CRT TV’s 📺 were daily drivers. They could stand the test of time, maybe 🤔 🆙 to 25-30 years, if tube type. Even the CRT could be replaced. Try that on for size with a flatscreen TV 📺 of 2024!! It’ll be in the dump before 2027 has the chance to arrive!! Thanks 😊 for resurrecting these old TV 📺 sets. Please keep 🆙 the GREAT 😊 work, Mr. Radiotvphononut!! Your friend, Jeff!!

  • @qwertykeyboard5901
    @qwertykeyboard5901 9 месяцев назад

    Found the UART port on my DTV box. There's some interesting stuff, like poking and proding memory, changing the config, emulating the remote, etc.

  • @batterymakermarkii2654
    @batterymakermarkii2654 9 месяцев назад +1

    That sure looks familiar. We had one way back when...

  • @thethirdrail8397
    @thethirdrail8397 9 месяцев назад +1

    I think that is the same t.v my family once had, back in the early 90's. but the tv we found at a rummage sale - was made out of plastic and the color was white! well, off color white, due to the age of the set.

  • @davidray3211
    @davidray3211 9 месяцев назад

    Used to pick them up on trash day then flip them .I had a good stash of Japan tubes . Retied Modulated High Voltage Beam Excellorator Repair Technician .TV Repairman

  • @KenKen-ui4ny
    @KenKen-ui4ny 9 месяцев назад +6

    What's in motion, stays in motion. It's a common false misconception, that if you don't turn something on and run it in a long time, that it won't break. You try that with a car, more then likely your going to have things on the vehicle and engine rotting out. The fuel going bad over time, especially with the ethanol added in it nowadays.

  • @vintageradios7790
    @vintageradios7790 9 месяцев назад +1

    I have been collecting radios for 48 years now, and just to let you guys know that I replaced the electrolytic capacitors in some of the ones that I started over 40 years ago collecting. And now when I turn some of them on even with bringing them up slowly on my variac the electrolytic have gone bad New Old Stock electrolytic with no and very little hours of use have gone bad in these radios that I have restored 40 years ago my case in point electrolytic along with other caps do not have a lifetime shelf life

    • @andygozzo72
      @andygozzo72 9 месяцев назад

      they certainly can deform with long disuse, but will vary with brand and quality, i have a 1957 transistor portable, physically rough but 'virgin' electronically ,all original, and works perfectly, most of my transistor sets have not needed new electrolytic caps,

  • @55benchguy
    @55benchguy 9 месяцев назад

    These videos always keep my interest as I use to repair these sets back in the day. Hey , when are ya gonna do that "Red record player for the blind " ?

    • @radiotvphononut
      @radiotvphononut  9 месяцев назад +1

      I've already started on it. I just need to get the video edited together.

  • @cjeffcoat2
    @cjeffcoat2 9 месяцев назад +1

    I am wondering if when the screws and washers fell off of the handle down inside the cabinet if they might have touched something and caused the fuse to blow, and nobody messed with it after that.

  • @chrome2infinity938
    @chrome2infinity938 9 месяцев назад

    So let me ask. You are testing these capacitors at rather high voltage for leakage. For example 400 to 600 volts. Are these caps rated for high voltage like that, and if not, wouldn't they leak at voltages they aren't rated for? I noticed that in the microfilm I saw lower voltages than 400 volts the caps tested where in. Essentially why test at voltages they are not rated for and do not operate in? Not saying your wrong by any means. Thank you for your time.

  • @Zickcermacity
    @Zickcermacity 9 месяцев назад

    On CRT TVs up to the mid-2000s, could users' setting preferences affect the life longevity?
    I know a lot of more recent tube sets, from 1990s up to 2008 or so, shipped with the 'Contrast' or Picture setting maxed. On the two that I either bought or received new, I promptly lowered that setting to the mid-point, and adjusted the Brightness(black level/ bias) until detail in darker parts of the picture were just visible under normal room light conditions.

    • @eDoc2020
      @eDoc2020 9 месяцев назад +1

      Cranking the brightness/contrast will definitely make the tube age faster. I don't think any other user settings could make a difference.

  • @ThejasonJaw5442
    @ThejasonJaw5442 9 месяцев назад

    Hello Brian 👋

  • @RetrofIex
    @RetrofIex 9 месяцев назад

    Hey what are your thoughts on a 1985 Sharp Linytron 19” model 19PK15 CRT tv, with knobs and woodgrain siding? Have you experienced any known issues with those Sharp CRTs?

    • @radiotvphononut
      @radiotvphononut  9 месяцев назад +2

      Mainly cold solder connections, bad capacitors, and an occasional bad flyback transformer.

  • @tomfranco4866
    @tomfranco4866 9 месяцев назад

    The parts from the handle might have blowin the fuse arcing something

  • @eefjuh5533
    @eefjuh5533 8 месяцев назад

    Hey are you ok?

  • @audibell
    @audibell 9 месяцев назад

    Good video

  • @tarstarkusz
    @tarstarkusz 9 месяцев назад

    1:31:07 The brightness appears to be up too much. Everything looks blue.

  • @JulianCrippen-w1b
    @JulianCrippen-w1b 7 месяцев назад

    Hello goofball

  • @cjeffcoat2
    @cjeffcoat2 9 месяцев назад

    First