Samsung 5" B/W CRT TV AM/FM Radio | Model BT-121J | Can I Fix it?

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This is the first time I've attempted a CRT TV and I really enjoyed working on something completely different.
DO NOT COPY. CRT tubes can hold a lot of voltage, what you see in this video is not an instructional and should not be taken as repair advice in any way shape or form.
Enjoy the video.
#tvrepair #electronicrepair #crttvrepair
SUBSCRIBE: / @philipbryden
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Website: www.philbryden.co.uk/
Twitter: / philbryden
Instagram: / pbryd
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Tools:
Multimeter: AstroAI Digital Multimeter, TRMS 6000
Soldering Iron: KSGER T12 Soldering Station
Hot air station: Quick 857DW+
Bench PSU: Tenma 72-2540 30V 5A
Digital Oscilloscope: Rigol DS1054Z
Desolder pump: Duratool
Miscroscope: • Micro soldering set up...
Disclaimer:
The information provide in this video is for entertainment use only.
I am not a professional and any methods I use might not be the correct ones.
I will not accept any responsibility for loss, damage or injury as a result of the information provided in this video.

Развлечения

Опубликовано:

29 июн 2024

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Комментарии : 24

@yanghao8351 10 дней назад

Excellent job! it's great to see a retro game on a CRT! The Mac Plus had no bleeding resistor so you had to discharge the CRT using a flat head screwdriver connected to ground. If you find the instructions on that discharge it might help you with your CRT.

@PhilipBryden 9 дней назад

Discharging the CRT doesn't look too difficult. It's a definite thing to do if I get another one. I was lucky with this one but I don't want to risk it again.

@mikecass8306 10 дней назад

Well done Phil, great fix and no shocks 😅

@PhilipBryden 9 дней назад

Thanks Mike. I enjoyed making this one and no shocks is a definite bonus too.

@kiphakes 8 дней назад

You could use it to test and repair retro consoles! I used to repair arcade machine monitors, to discharge the CRT I had a massive flat headed screwdriver with a wire attached to it, an on the other end went onto a crocodile clip that I attached to a grounded point (I used the monitor frame). You put the screwdriver gently under the ‘suction cup’ to touch the metal contacts that go into the CRT. You’d get quite the ‘crack’ sound sometimes! But that was preferable to a whack of the voltage!

@PhilipBryden 8 дней назад

I've seen it done by other people, but haven't tried it myself. Too worried about damaging the CRT because I don't kow what is behind that little rubber suction cup thingy.

@kiphakes 8 дней назад

@@PhilipBryden Oh, there's a hole in the CRT that two little metal prongs under the suction cup hook into it.. they are pretty sturdy and hard to break.

@Musicradio77Network 8 дней назад

That’s a nice looking portable TV by Smasnug from the 1980’s.

@PhilipBryden 8 дней назад

I think so too. There's something special about mini CRTs.

@wisher21uk 10 дней назад

What a star you are Philip, amazing project and a great fix sell it as retro maybe worth a few quid 😊

@PhilipBryden 9 дней назад

I paid £30 for it but I genuinely can't think of a use for it now analogue TV has been switched off and this model doesn't have any actual inputs. Hence my interest in modding it to composite if it's possible.

@yanghao8351 9 дней назад

@@PhilipBryden The original Famicom only had RF out but I saw a Chinese video where a guy just soldered two RCA jacks to the board and it worked with Composite. I wonder if that could be done with your CRT? Of course the difference is soldered to input instead of output.

@PhilipBryden 9 дней назад

Perhaps the signal is composite before it goes through modulation to get RF which is basically radio. So adding an connector after the RF tuner board in the TV will let me plug in a composite input.

@wisher21uk 9 дней назад

@@PhilipBryden well worth a re-visit, worth a try 😊

@wisher21uk 9 дней назад

@@PhilipBryden mod it Philip you know it makes sense 🙂