My father served 26 years in the US Navy as an electronics technician. When I was a small child, he built our first TV set, and when he retired in 1965, he owned and operated a TV repair business. He was a wizard at TV repair. Just a test or two and he could pinpoint the problem. I even saw him look at the TV and from the symptoms he saw on the screen he could figure out the problem.
Really cool the way you went step by step to see how each failed cap affected the circuit! It was much more insightful and interesting than if you had just blanket-recapped everything.
i remember going to an electronics club at the school but the teacher Happy Harry as we used to call him really knew nothing about electronics it was one of the sixth formers that built the projects we called him happy harry cause hed got a permanent smile on his face
I never knew the picture on those could be so clean. I just imagine the picture would occasionally bounce around or have constant noise... to see such an old set working so well is amazing.
Didn't think I would be waking up on a Sunday morning to watch someone repair a vintage TV, but here we are! Nice way to start the day to see how old electronics work.
Loved the video. Reminds me of a 5" TV I built it 1956 when I was 16 years old. It used a 5BP1 ex radar tube with a green phosphor. It always had issues with poor vertical lock but it was a design problem in the original hobbyist article and I didn't have the skill to improve on it. Many good memories of my early days whilst watching this video.
Takes me back to when I was a TV engineer starting in the late 70s till the early 90s before I moved to cable TV and telecoms. It was satisfying to fix tv's back then and on a winters day in the workshop, those old valve tvs could keep you warm 😊
This video was a delight to watch. This was our first TV. My parents (Dad was W3NVS ham radio operator) bought it from a childhood friend in 1949, who was also a ham radio operator, that owned a TV/Radio repair shop. Ours was the first TV in the neighborhood and we kids would all come to my house to watch Captain Video! At a discount, I think my dad paid something like $130 at the time - a LOT OF MONEY. Later (in 1957) I became W3KYN and am still licensed as K3GW.
I am an electronics tech and started my teenage years first on radio then television in the 1960's . Here in Australia we didn't have series string heaters and direct rectification from the mains to supply HT to the vacuum tubes. A mains power transformer was always used in Australian made sets as at 240V 50 Hz mains the dangers were considerable with potentially live chassis unless an isolation transformer was used. With only 120V @ 60Hz the potential for electrocution of the operator or tech was considerably less. Another comment is that digital multimeters are not as suitable for this type of repair as an older 20,000 ohms per volt analogue instrument. Especially for reading resistor values and capacitor leakage. A digital meter will lead you up the garden path during logical fault finding, only use them when great accuracy is required, in an older set like this, it's basically not ever required . When calculating a capacitor value to use as a ballast resistor use the capacitive reactance equation ie ; XC= 10 to the sixth power over c x freq x 2 pi , where c is in microfarads. Transpose as required.
Amazing that the CRT has held a good vacuum for all of these years.I bought one of these from a neighbor back in early 60s, when upgraded to a 10 inch set. 😀 I should try getting it to run again.
