hi. very intrestin video about old hardware.every time. when I was in a Soviet midle school (when the USSR existed), the only way to get a personal computer was to build it. the components were easily accessible. there was an extensive community of electronics engineers and electronics enthusiasts. assembling the computer (zx-spec 48) was not a problem. but it was a challenge for me to get it to work. ... because there was no oscilloscope. and even a logic tester. (I was 12 years old at the time!). but I had an old tube TV that I got from my grandmother. and I used it as an indicator by connecting a coaxial wire with a probe to the video detector. (this is how I managed to find the faulty chip. binary counter). I could not even think that such a method was used in an industrial device.
What I learned is not all Radio's TV's need to be all recapped it depends on the set and testing... Your video on the radio's was a lesion for me... Thank you....
Dear Shango, This is a great video, I Know you do not have the time to comment back, but wanted you to know, these radios you repair and telling what and how to fix them is a gold mine to me, I to am repairing transistor radios and enjoy watching you at work.
What a job that was.. I like the constant reference to the circuit, which put the last IF stage back in to amplification.. Amazing you managed to get 3 'faults' (IF transformer, 560pF, and detector) in your analysis.. I had the job of fixing a TV, where, when it 'warmed up', it would 'lose' the channel.. It was a Philips flat square stereo TV, (expensive at the time), and priced a 'new' tuner $A400.00..! So I thought I'd tackle a repair; I removed the tuner, opened up the metal box, and found 2 'blobs' of solder up the legs on a 10uF capacitor, both contacting the can, (underneath its plastic sleeve), and shorting it when warm.. I was in that 'what's going on?' stage for a long time...
Pretty cool fix and use of the Heathkit. I just bought one for $10 (Heathkit model T1) yesterday was trying to figure out the purpose of this thing but after watching the video now I do know. Thanks and I will subscribe to your channel.
Nice work on repairing that IF transformer, it's definitely a tricky task. That kludged repair you removed was interesting, I guess who ever did it couldn't get a replacement IF transformer and decided to make do. Now I just need to get the signal tracer I picked up in Kutztown working.
Had a friend as a young kid who whenever he found any electronic stuff in the junk he would bring it to me. Once brought over one of these. We didn't know what to do with it except make noises with it. I used it as sort of an amplifier. I believe it had the tuning eye.
My dad was a very smart man, he grew up a farmer and worked the farm till his health put him on the disabled list at 60. The one thing he beat into my head over and over was this primary rule of fix-it! (IF IT WORKS DON'T FUCK WITH IT!) There are a lot of time I violated that rule and I was always angry at myself for doing that.
hope you can get some smaller and better hand tools. good analysis of the problem, and the "repair" done previously ! I had the optometrist make me some magnifying glasses that include my astigmatism correction.. I can wear them all day for bench work.. far superior to any kind of magnification . get glass lenses.. they don't scratch.. and measure your working distance.. as the focal range is limited. I know.. it costs money !
As a fellow who has lived in many places around the old globe, I have to wonder. Does being exposed to all those high powered radio signals have any effect on the Human Body: Now I am living in a very rural area of South Dakota so I can be here to care for my 95 year old mom. I am her last living child so I sort of took on this duty. She is in a nursing home now, I recently sold her house and all her worldly goods, the profits were distributed among my self and my nieces and nephews to we think this was a fair ending, I guess. At any rate here, there is one local Radio Station, it's radio tower blew down a couple of years ago and since the grain company was building a prairie sky scraper (grain elevator) the station opted to mount their antenna atop this huge concreate structure. At any rate this is about the total exposure for us out here to radio signals. Oh sure there are some private business band sets and the emergency services still have their radios for dispatch,, and there is the now ever present cell phone signal from only one tower servicing the town as well as the 2.4 ghz routers in everyone home. I had read somewhere over my research that RF energy can disturb and even damage human cells. I was warned of this when I trained in the US Army to run their high powered truck mounted radio teletype sets, capable of talking to the US from a wide spot on QL1 in Vietnam, now that's radio energy and power. Now you folks in LA must be hammered daily by all the radio wave and television signals buzzing among the traffic and buildings that make up you capital of liberalism on the left coast. I wonder if indeed such exposure to radiation expelled from those huge transmitters cause a change in the structure of the brain and allows all those liberal ideas to seem like a wonderful thing when it is, indeed an end to our nation as she stands today.
San Diego (where I live) also had classical music on AM for a number of years. I think it was even AM Stereo, although I didn't have an AM Stereo receiver to listen to it in stereo.
RF detector in this probe. Also DC blocking capacitor since one will probe active circuits. Sometimes there is also a series resistor to help isolate or reduce probe wiring and circuitry capacitance from the circuit under test.
What kind of radio is that?, with nice schematic with voltages and all. I'm just thinking I probably couldn't find any schematic at all for most pocket radios. (i'm new at this and just trying to figure this stuff out) thanks
With regard to the wax in the final I.F. stage, maybe you could heat up an old screwdriver to melt the wax out and then turn the core (not with screwdriver)? To save scraping the wax out.
Those Soviet-era Eastern Bloc radios are damn intriguing, a "weird" flow to the design of this one, though, similar to one of the Grundig portables that I had my fingers in a while back.
I'm trying to learn how to fix radios, stereo equipment and so forth. I was just wondering if you could tell me what you mean by a weird flow to the design on this one. How is this one "weird", as opposed to more "normal"?
Sounds good, great repair, and I love the probe rebuild! I do feel sorry for you, having to live in an area where the English Language is number 2 on the radio dial. Come up to the Dakota's where it is rare indeed for skip to be bad enough that you have to hear Spanish spoken on the air!
Signal tracers are faster to use than signal generators and scope. You have to set up the scope for proper waveform You have to view and set the the frequency on the signs generator
You shouldn't ever try to reform caps since they cannot be trusted in the long term and can indeed go short circuit out of the blue and the whole thing will be smoking in flames. They need to be replaced on the spot.
You know your stuff....about troubleshooting and repair and I thank you for that part but next video, use someone experienced at making a video and editing to polish off your work. Just saying.
Hello, I'm in wave repairing a radio transmitter power (150 watts), uses a combination of bulbs and transistors, and for restoration need a rotary switch 2 position, 4-pin and 12-pin, if you have this componenente is agradeceria send it to me, it would pay the cost, because in my country I could not find it, thanks for your attention
I would like to see some more use of the signal tracer ..nice job..how about another tracer vid? if you want to sell I am looking for a t 3 .tornusmokus message if interested ..I have an interest in the t3 cheers...mokus
Maybe you will be motivated to learn about some of this older tech now. If you stand back and objectively view the DATA you got in this short debug demo, I’ll bet you as much of your favorite brew you can drink on a nice LA County weekend that you’ll discover a whole world of subjective debugging clues. For the most part, unless you defeat most of the digital perks in modern test equipment, this whole world of “analogy data” will be in accessible to you. Embrace it.
![Natanael Cano x Oscar Maydon - Giza [Official Video]](http://i.ytimg.com/vi/eXCS6-MSQ_Y/mqdefault.jpg)
hi. very intrestin video about old hardware.every time.
when I was in a Soviet midle school (when the USSR existed), the only way to get a personal computer was to build it. the components were easily accessible. there was an extensive community of electronics engineers and electronics enthusiasts. assembling the computer (zx-spec 48) was not a problem. but it was a challenge for me to get it to work. ... because there was no oscilloscope. and even a logic tester. (I was 12 years old at the time!). but I had an old tube TV that I got from my grandmother. and I used it as an indicator by connecting a coaxial wire with a probe to the video detector. (this is how I managed to find the faulty chip. binary counter). I could not even think that such a method was used in an industrial device.
What I learned is not all Radio's TV's need to be all recapped it depends on the set and testing... Your video on the radio's was a lesion for me...
Thank you....
Dear Shango, This is a great video, I Know you do not have the time to comment back, but wanted you to know, these radios you repair and telling what and how to fix them is a gold mine to me, I to am repairing transistor radios and enjoy watching you at work.
Shango you can fix anything. My number one technician.
Hunter - His certainly a god on everything he touches & fixes.
What a job that was.. I like the constant reference to the circuit, which put the last IF stage back in to amplification.. Amazing you managed to get 3 'faults' (IF transformer, 560pF, and detector) in your analysis..
I had the job of fixing a TV, where, when it 'warmed up', it would 'lose' the channel.. It was a Philips flat square stereo TV, (expensive at the time), and priced a 'new' tuner $A400.00..! So I thought I'd tackle a repair; I removed the tuner, opened up the metal box, and found 2 'blobs' of solder up the legs on a 10uF capacitor, both contacting the can, (underneath its plastic sleeve), and shorting it when warm.. I was in that 'what's going on?' stage for a long time...
Very much appreciate ( and need ) these "How To" troubleshoot lessons. Boosts my learning curve off the x-axis! Thank You!
Interesting repair this one. I have the same tracer and had to build a probe as well. Nice little amp in them. They can scream lol.
Thanks
Carl
Pretty cool fix and use of the Heathkit. I just bought one for $10 (Heathkit model T1) yesterday was trying to figure out the purpose of this thing but after watching the video now I do know. Thanks and I will subscribe to your channel.
I made a probe for the same unit using a old solder sucker for the housing of the probe... worked well..
Carl
Very interesting repair. The guy that did that must have been pretty knowledgeable to hack it together like that and make it work at all.
Nice work on repairing that IF transformer, it's definitely a tricky task. That kludged repair you removed was interesting, I guess who ever did it couldn't get a replacement IF transformer and decided to make do. Now I just need to get the signal tracer I picked up in Kutztown working.
Nicely done, thanks for sharing!
What a useful tool! I think I will build my own from a old audio amp later.
I would buy that in a heartbeat....been looking for a clean one for years....
Had a friend as a young kid who whenever he found any electronic stuff in the junk he would bring it to me. Once brought over one of these. We didn't know what to do with it except make noises with it. I used it as sort of an amplifier. I believe it had the tuning eye.
Great jobe on Signal Tracer Probe - not surprised surgery went well. Seems liking this & knowing how, next is fix. Now for the ALL Seeing Eye --*--
Good work very well done.
KFI the king of commercials. great video.
Hi Shango. That's the best looking one I've seen. Great Job has always.
Take care.
B0bby
I love those "square discs". You are a genius man.
I enjoy your videos, don't understand a thing, but like them anyway. :-)
My dad was a very smart man, he grew up a farmer and worked the farm till his health put him on the disabled list at 60. The one thing he beat into my head over and over was this primary rule of fix-it! (IF IT WORKS DON'T FUCK WITH IT!) There are a lot of time I violated that rule and I was always angry at myself for doing that.
That was an impressive repair!
hope you can get some smaller and better hand tools. good analysis of the problem, and the "repair" done previously ! I had the optometrist make me some magnifying glasses that include my astigmatism correction.. I can wear them all day for bench work.. far superior to any kind of magnification . get glass lenses.. they don't scratch.. and measure your working distance.. as the focal range is limited. I know.. it costs money !
Oh BTW. glad you are back.
tracer looks real clean
great work
6:28 ... cool...that beautiful Heathkit logo script they etched in on that PCB
You make me laugh! Always fun to step into a cow pie. Nice fix.
works quite well
"Heathkit, it's me, I'm Cathy, I've come home. I'm so cold, let me in your window"
Cara esse canal é top
As a fellow who has lived in many places around the old globe, I have to wonder. Does being exposed to all those high powered radio signals have any effect on the Human Body:
Now I am living in a very rural area of South Dakota so I can be here to care for my 95 year old mom. I am her last living child so I sort of took on this duty. She is in a nursing home now, I recently sold her house and all her worldly goods, the profits were distributed among my self and my nieces and nephews to we think this was a fair ending, I guess. At any rate here, there is one local Radio Station, it's radio tower blew down a couple of years ago and since the grain company was building a prairie sky scraper (grain elevator) the station opted to mount their antenna atop this huge concreate structure. At any rate this is about the total exposure for us out here to radio signals. Oh sure there are some private business band sets and the emergency services still have their radios for dispatch,, and there is the now ever present cell phone signal from only one tower servicing the town as well as the 2.4 ghz routers in everyone home. I had read somewhere over my research that RF energy can disturb and even damage human cells. I was warned of this when I trained in the US Army to run their high powered truck mounted radio teletype sets, capable of talking to the US from a wide spot on QL1 in Vietnam, now that's radio energy and power. Now you folks in LA must be hammered daily by all the radio wave and television signals buzzing among the traffic and buildings that make up you capital of liberalism on the left coast. I wonder if indeed such exposure to radiation expelled from those huge transmitters cause a change in the structure of the brain and allows all those liberal ideas to seem like a wonderful thing when it is, indeed an end to our nation as she stands today.
A youtube channel called electroboom had a video about these fields. Have a nice day!
super master
classical music on AM? wow, I am moving to LA.
San Diego (where I live) also had classical music on AM for a number of years. I think it was even AM Stereo, although I didn't have an AM Stereo receiver to listen to it in stereo.
wow, I'm not. there are a lot of good people in CA but the bad people are running things. no thanks
i love your humor
Captured the Ebola otbreak on the radio. Ha. That radio is impressive as it picked up a lot of station. Lean sound too.
Smart and adaptive Headlights !!!!!!!!! and oh boy Ebola !!!!!
I once bought a wonderful machine called a tripod. Amazing bit of kit.
Hi. Why does the probe have circuitry in it? Is it for current limiting so it doesn't damage the tracer preamp?
oh yeah that must be it bruh 🙄
RF detector in this probe. Also DC blocking capacitor since one will probe active circuits.
Sometimes there is also a series resistor to help isolate or reduce probe wiring and circuitry capacitance from the circuit under test.
Does the Primary on the main transformer allow to connect to 220v power supply?
(some old devices have dual primary wire)
I have a later and much smaller Heathkit T-4 signal tracer. I find it half useful, half just to play with.
Hey Shango take a look at Mr. Carlson Lab...he does a great job repairing the Heath Kit Signal tracer...
10 -15$$ WHHAAATTT!!! i cant find one for under 100$ i had to build my own
What kind of radio is that?, with nice schematic with voltages and all. I'm just thinking I probably couldn't find any schematic at all for most pocket radios. (i'm new at this and just trying to figure this stuff out) thanks
With regard to the wax in the final I.F. stage, maybe you could heat up an old screwdriver to melt the wax out and then turn the core (not with screwdriver)? To save scraping the wax out.
I like what the components have wrote on them,made in the USA.
Those Soviet-era Eastern Bloc radios are damn intriguing, a "weird" flow to the design of this one, though, similar to one of the Grundig portables that I had my fingers in a while back.
I'm trying to learn how to fix radios, stereo equipment and so forth. I was just wondering if you could tell me what you mean by a weird flow to the design on this one. How is this one "weird", as opposed to more "normal"?
That wire is finer than frog hair lol 😁
Narrator: He did end up using it.
Sounds good, great repair, and I love the probe rebuild! I do feel sorry for you, having to live in an area where the English Language is number 2 on the radio dial. Come up to the Dakota's where it is rare indeed for skip to be bad enough that you have to hear Spanish spoken on the air!
Signal tracers are faster to use than signal generators and scope. You have to set up the scope for proper waveform You have to view and set the the frequency on the signs generator
“The... the... thing”. Some people did some things.
Can I build this probe to use my car audio input as a signal tracer?
Brown Black Green Silver, Yellow Mauve Yellow Silver.
You shouldn't ever try to reform caps since they cannot be trusted in the long term and can indeed go short circuit out of the blue and the whole thing will be smoking in flames. They need to be replaced on the spot.
Those wires on that transformer are about the size of the wires on a 500mA inductor you'd find in a wah pedal. Really tiny!
You know your stuff....about troubleshooting and repair and I thank you for that part but next video, use someone experienced at making a video and editing to polish off your work. Just saying.
Hello, I'm in wave repairing a radio transmitter power (150 watts), uses a combination of bulbs and transistors, and for restoration need a rotary switch 2 position, 4-pin and 12-pin, if you have this componenente is agradeceria send it to me, it would pay the cost, because in my country I could not find it, thanks for your attention
That multimeter is a fluke. Lol.
Interesting video. That Russian stuff looks foreign, literally.
way to Shango!
The transistor acts as a diode and detects the audio
My FrOyO yO
I would like to see some more use of the signal tracer ..nice job..how about another tracer vid? if you want to sell I am looking for a t 3 .tornusmokus message if interested ..I have an interest in the t3 cheers...mokus
Not much to the probe, inside is pretty basic.
Yes. 1
are you really eating lunch while videoing this?? lol.
seeburgm100a - LOL 😂
The camera interference sounds like slow scan TV.
listen in to Rush Linbach on Russian ""spy"" radio comrad!
Maybe you will be motivated to learn about some of this older tech now. If you stand back and objectively view the DATA you got in this short debug demo, I’ll bet you as much of your favorite brew you can drink on a nice LA County weekend that you’ll discover a whole world of subjective debugging clues.
For the most part, unless you defeat most of the digital perks in modern test equipment, this whole world of “analogy data” will be in accessible to you. Embrace it.
wanna sell it?
Description and circuit diagram of this radio:
rw6ase.narod.ru/00/rp_p/etjud2.html
Does the Primary on the main transformer allow to connect to 220v power supply?
(some old devices have dual primary wire)