Of course I had to include something funny... I hope you enjoy my little take on Christmas "fashion" as much as I did making it. ... https://www.youtube.com/watch?v=b7MhYF9f2w8
Finally! It took way longer than originally anticipated, but - as you can see in this edition - I did run into a few issues, especially those nasty "electrolytics in a can, get two for one!" packs.
The original plan was to have the caps replaced and keep "the rest"... but then the resistors also had quite a large drift. There was only a few that were "OK", so I said: skip it, I'll just get the lot replaced too... and that only left a few wires on the tube sockets... which I also changed because of... nastyness.
Overall, I replaced all components that are still around these days. The tubes, the head, transformers and the motor are original in the electrical part.
There were several minor issues too: like a loose wire that has never seen solder, center tap lines just mashed into the transformer core... well, general fun.
The first of the two spools I got had some... ahem... adult entertainment on it. Holy cow... That needed some beeps!
0:00 Intro / Capacitor Example / Power Transformer Case
1:36 Rivets / Electrolytic Gutting
2:37 Canned Cap #2 / Resistor Desoldering
3:50 Replacement Reasoning
4:45 Reassembly Audio and Mains Transformers
5:24 Mounting Tab Refabrication / Replacement Electrolytics
7:01 Repairing and Mounting Cans
8:06 Potentiometers / Power Switch
9:50 Selection Switches / Speaker / Front Panel Assembly
10:45 First Tube Connections / Rectifier Tube / Base and Front Mount
11:40 Schematic Details / Shielded Cap
12:25 Microphone Rebuild / Chassis Mount
13:22 Power on Tubes / Preparation for Listening
14:20 First Listening to Old... umm... Content... / Face Plate
15:52 Case! / Microphone Cover / Testrecording
16:30 Summary / Credits / Outtake
Music:
My Train's A Comin'
Unicorn Heads
(YouTube Audio Library)
You can support me on Ko-Fi: https://ko-fi.com/atkelar
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https://www.youtube.com/watch?v=f7aLCrx94rw
FPS (Funday Pawpet Show) had their 500's episode - that's 2000 hours of silly fun with puppets. This was my special submission for that particular episode. It originally was submitted in 42 individual files to make it easier for them to air it between other videos or live segments.
Two of the answer video clips contained commercial music for which FPS pays RIAA fees but I clipped the audio here since I can't afford those.
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https://www.youtube.com/watch?v=2aYZXWiwebk
Workshop Project #34 - Fluke 5100B - Part 3
And now for the conclusion! Part one and two had the disassembly, cleanup, most of the recapping and first power supply tests. No magic smoke! So in this final part I start off with the "isolator board" and a quick function test of the first modules! The first tries are promising, so I use that to explain a bit about the overall concept of the device and how the different modules are connected to make magic on the output.
I only realized after the final edit, that I neglected to mention the "Error mode" (demonstrated at around 24:12); it is to set the output voltage or current up and down until the meter under test shows the requested value. I.e. if the output is set to 100V and the meter reads 101V, you dial down the set voltage in error mode until the meter reads "100" and the second display then tells you: "+1% error".
0:00 Intro / Isolator PCB
1:27 Controller PCB
2:26 Front Panel Painting
4:06 Display Board Mounting / Power Up!
5:15 Low Range DC Tests
6:10 Explanation: Conceptual Overview / DC Voltage Low Range
7:40 Explanation: AC Voltage Low / AC+DC Voltage High Range
8:43 Explanation: Currents / Resistor Values
10:45 Problem: DC 20+ or AC Voltage? / Hex Inverter
12:35 A clue! / Hunting Grounded Phantoms
14:29 Finally! Fixed!
15:50 Buttoning up the Case
17:38 Loading up the Modules / Alignments?
18:45 Reference Voltage Issue
20:25 Shields up! / Wideband Output OK
21:07 IEEE (GPIB) Interface
22:10 IEEE Test
23:07 New Feet! / Final Testing
24:44 Summary / Credits / Outtake
Thanks to Glyphon for a second opinion on the opamp circuit!
Music (in order)
My Train's A Comin' - Unicorn Heads
Nine Lives - Unicorn Heads
Wrong - Dan Henig
Town of 24 Bars - Unicorn Heads
Light Expanse - Unicorn Heads
(YouTube Audio Library)
You can support me on Ko-Fi: https://ko-fi.com/atkelar
and also on Patreon: https://www.patreon.com/Atkelar
and now also here by using the "Super Thanks" feature!
Thanks to everybody who signed up already!
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https://www.youtube.com/watch?v=wLuVjqd4npc
Tractor Repair/Restoration - Part 1 of yet unknown...
I inherited the tractor from my late grandfather a few years ago and use it to haul around stuff around the house: garden clippings to the communal dump site for example. Much easier to have two or three trips every year than weekly runs with a car.
That being said, I do take care of it reasonably well: regular checkups and keeping it clean-ish. At least as clean as a pressure washer would get it. The caked up gunk of 40 years worth of grease inside the engine is something that not even industrial pressure washers can tackle though... Which is why I always wanted to take apart at least a few pieces to gain better access to the hard to reach places and give it a nice clean. The paint was also chipping off in some areas, with minor but still annoying rust showing here and there. A paint job would also be in order some time... not to mention that in the early 70s, the electrical system is also not quite up to standard: there are quite a few power lines running criss cross the entire tractor that are not running through any fuse whatsoever. Many of these old tractors have been lost to cable fires. That means that the cable tree was another thing on my "eventually to do" list.
My annual check on things started with an oil check: Hm. Where IS the oil? Since it seemed to need quite a bit to top it off, I decided to do an oil change. And found a chunk of metal in the pan. Not good. This is basically where one thing led to another and now I have half the tractor disassembled and partially painted. The other parts of this series will deal with painting, parts restoration, rebuilding and hopefully test driving it.
Chapters
0:00 Intro
0:37 Oil change / project overview
2:03 Battery / Hood / Exhaust
2:48 Coolant / Hoses / Air filter
3:30 Headlights / Rocker cover
4:15 Rocker overview / Jacking up
4:55 Axle block screws / Starter
5:33 Tires and Fenders / Radiator
6:23 Steering linkage
6:54 Radiator and Axle Block
7:58 Oil pan / Dip Stick
8:42 Rockers / Air Filter / Water Pump / Head
9:37 Fuel System / Battery Box / Tank / Hydraulic Pump
10:08 Separating Engine and Clutch
10:45 Starter / Clutch / Flywheel / Engine Stand
11:43 Engine Bottom / Oil Lines / Crank Lock / Crank Seal
12:31 Upper and Lower Shell Separation / Pistons
13:12 Counterweights / Crank Shaft / Cam Shaft / Timing Cover
13:50 Concluson / Dashboard / Frame
14:26 Parts overview / Coming up next / Credits and Outtakes
Donate a few bucks for some coffee (or some equipment upgrades): https://ko-fi.com/atkelar
Music:
My Train's A Comin'
Unicorn Heads
(YouTube Audio Library)
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https://www.youtube.com/watch?v=y5_QwbMr2Kc
Re-Upload as short, cause YT App keeps breaking the upload and turns it into a regular video; Guys! Bug! Fixit!
Anyhow... I've seen these "button covers" mostly on old printers and similar devices. The cover on the two HP printers I got recently was worn through and I kept thinking: where do I get a new one? Well, this is certainly a solution; Not "perfect", but "very good" for home use for sure!
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https://www.youtube.com/watch?v=KXK6J8vb8_g
Last year, I ordered a batch of four different dictaphones to have one as data store for my Sharp PC 1403. I did the restoration on the one that best suited the task and put away the others for later. Coincidentally, it is later now, so let's get the first one out and ready!
The device is a Sony M-570V, a microcassette recorder with dual speed and voice activated recording (VOR, "voice operated recording")
There are two issues with the device: for one, I had a slight mishap during the disassembly phase, but I got that under control. The case is very scuffed up though and in need of a fresh coat of paint. I would have painted it, I got a can of silver model paint that is very close, but there's printed labels on the device and I'd need to do some silk screen printing for those again... not enough time right now, maybe I'll come back to that later.
0:00 Intro & Presentation / Belt removal
1:15 Case Overview / Disassembly / Recapping
2:23 Switches / Sockets
3:53 Motor / Case disassembly
4:50 Drive mechanics disassembly
5:33 Spring has sprung!
6:23 Cleaning parts / Tape counter / Cleaning case / Friction wheel
7:43 Rebuild Drive
9:25 Spring replacement
10:16 Finalizing Drive / Head / New belts
11:00 Paint? / Encasing it!
12:13 Batteries + Test / Presentation
12:48 P.S... / Summary / Credits / Outtake
If you want to support me, you can drop a few coins into my ko-fi: https://ko-fi.com/atkelar
Music:
My Train's A Comin'
Unicorn Heads
(YouTube Audio Library)
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https://www.youtube.com/watch?v=_pJx1xDqelI
A parody of/homage to one of the most widely known SciFi movies ever made. And also my first attempt at 3D graphics.
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https://www.youtube.com/watch?v=QEdO6GqjhEI