It has been brought to my attention that I have given terrible advice for how to properly discharge a CRT. If you are attempting this project, please refer to the following video by Mike the Scrapper on how to do it safely: ruclips.net/video/6dAMhqwWBwg/видео.html
...also its the fucking tube that acts as a HV capacitor, not the flyback transformer. Just sayin. And FFS do moar homework before posting a vijeo like this, how many kids watch this and just think it's ok to go poking about inside one of these like you did?!
ClevelandStorms so if that makes all together 20 watts if you were to double or even triple on a few parts you could theoretically make one with the same size board and have it pushing out 60 watts no problem. correct?
Yes, I'm definitely glad someone pointed this out to you. After being an electronic repair tech for around 40 years, I've seen others as well as been ''popped'' by this lead and/or the CRT when attempting to disconnect it myself. Although the newer TVs bled off that HV fairly well, they could still hold a charge. From experience I can tell you that this ''POP'' can be very painful. I won't even get into the old tube type TVs. Make sure that screwdriver is grounded before you attempt to take the cup & lead loose. A jumper with alligator clips works well. Also, it's good practice to do it with 1 hand. stick your other hand in your pocket while doing this. Other things that can really pop you are those electrolytic capacitors. Particularly those with a high capacitance rating (mfd or uf --microfarad amount). It's best to short the leads of these capacitors on the bottom of the board with a screwdriver as well. It's just better to be safe than hurting & almost afraid to continue with your project.
Being an old TV repairman I can tell you it's the picture tube that holds the hi voltage charge, not the flyback cable when it's unattached. Ive used amps out of TV's like that before, but I just sawed out the circuit from the motherboard and used it as an already built amp circuit
I turned the volume of the video all the way up and forgot about it, then I clicked on another video and my ear drums exploded. (Typing this from hospital)
DUDE WOW!!!!! I don’t know why I’ve been reheating and removing things with my iron one prong at a time when there is a perfectly good torch that does it faster cleaner and amazingly pleasant to experience. Thank you for sharing your knowledge.
not all TV's will have a vertical audio OpAmp, depending upon the make and model of TV may have a dual in line package chip, a TDA2822 for instance. which is an 8 pin DIP package chip. All components to make the amplifier work WILL BE ON THE BOARD. But you will need to take a look at the datasheet as this video says to get an example circuit. Recycling from broken and unused electrical items is always fun. My whole channel is devoted to the same ethos. If you do some simple maths and some research about each of the components you can make some really useful things for absolutely no money whatsoever. GREAT VIDEO! KEEP EM COMING.
Cool video besides your mic levels. To the haters on here., He never said it was practical or top of the line. It's a learning project made with salvaged parts. Make a video yourself if you can do better.
Thank you for sharing. Embarrassed that I never thought of using propane to get the parts off easily. I'm watching this video because I took apart a widescreen CRT TV that nobody wanted to get some heat sinks and discovered some large speakers with bass enhancing enclosures similar to Bose. This gives me inspiration.
Nice job. Competently done too, loved it. Put the amp in a small box with a couple of connectors for power supply and speakers and inputs and you have a usable stereo amp for small things.
I leave it on the board and cut it out with tin snips...I cut around the area of the amp chip and caps....then find out how to wire it...it is already made into a circuit so just leave it there...
nice review /fist of all ,don t buy from ebay -they look the same bat are cheap clones(heating very fast and up)the original one like this are gold if you know how to configure it.enyway ,nice project .i did once a amp from an old tda 2020...
The quoted 10 watts is only available at the high voltage and that is at 10% distortion in other words clipping. At 12 volts pre clipping you will be lucky to get 3 watts. At higher voltages you will also need a heat sink.
tda 2003 / 2004 AND 2009 are good to create noisy amplifier if used on bridge ;)my first DIY amplifier was a stereo use 2X 2 tda bridged for 2X 18 true WATTS :)
Nice scrap build. Nice to see a young person interested in electronics. Be careful what you advise about high voltage. you were wrong about the wire holding a charge ,it's the tube. Also before messing with the TV, use a hammer to crack the neck back by the pins. Just a gentle tap and you will hear the air rush in. That will eliminate the danger of the tube imploding and causing injury.
your talking about the audio amplifier,I think you need that amplifier inside the tv to amplify your audio in your camera,we can't hear you,but don't worry i used my class ab amplifier to my lap top to hear your good and best explanation..God bless us.
agreed sometimes its not that easy but following the tracks from speaker connection on the PCB will almost certainty lead you to the audio OpAmp. sometimes its a bit tricky but you will almost always be able to find what you are looking for.
Just because he found the audio IC & it's associated components does not mean there may have been sections of additional circuits running through that area. Years ago, I had a Zenith Systems 3 TV that had plug in modules for different circuits. This TV developed an extremely loud, high pitched squeal from the speaker which the volume control had no affect on. It happened that the audio board also had the horizontal oscillator circuit on the same board. A component that isolated the circuits shorted out causing the frequency of the oscillator to become amplified to the extreme. It was so loud, it was annoying to people who lived across the street. Therefore, just because you think you've isolated all you need, do not take it for granted.
Just because he found the audio IC & it's associated components does not mean there may have been sections of additional circuits running through that area. Years ago, I had a Zenith Systems 3 TV that had plug in modules for different circuits. This TV developed an extremely loud, high pitched squeal from the speaker which the volume control had no affect on. It happened that the audio board also had the horizontal oscillator circuit on the same board. A component that isolated the circuits shorted out causing the frequency of the oscillator to become amplified to the extreme. It was so loud, it was annoying to people who lived across the street. Therefore, just because you think you've isolated all you need, do not take it for granted.
Used the TDA2009A quite some years ago, and it is pretty reasonable in terms of sound quality, and also has some power. Even made an amplifier around it, that also used a LM1036 for volume, balance and tone control. It was capable of driving 4Ω loads with ease. Unfortunately, it is now obsolete.
You'll need to add a heat sink to that chip if you don't want to burn it out. It might not have had one in the TV, but from experience those chips get hot fast.
Mr.Someone \Tom/ yes thats my point vid says u can short out lead to gnd but if theres no gnd in pwr wire ur dicing with death as high voltage was mentioned right?
Mr.Someone \Tom/ i once opened up a phillips vga comp monitor when it stopped working, couldnt fix it so butchered it for parts (as i had identical 2nd one) & remember ripping out that lead. my question is how long would residual pwr be in the crt?,as monitor sat on the floor for about 6 months+ . could it have discharged while left unused?
I pulled apart a speaker/power bank combo device because I lost the original charger and fried it trying to charge it. Pulled it apart and there was a huge lithium ion battery, two boards inside a plastic part and two flexible wires going to the speaker on the other end. I separated the two boards and one was the amplifier. Found the two power points and got it working. The amp seems to be happy at around 3 volts. I'm going to try 4.5 from batteries. I'm going to make an enclosure out of something. and use the battery and guts from a small power bank to make a new amp and power bank. Yeah I know it was a power bank originally.
very cool. and i have a bunch of old tv's I'm about to scrap out and I've been looking for a way to use the audio out of them. i guess i should just dive in and start pulling them apart and setting the pieces aside for future use.
The screeching sound is the TDA2009A when connected to a high impedance input - it doesn't like it. Phones save power by switching off their audio output sections which leaves outputs floating at high impedance. Once the phone is pushing out a signal the TDA2009 will be stable.
That chip is like 2 bucks, not worth salvaging and then putting on a new board. If you really want an amp, dremel the audio amp section of the tv pcb out and use it as is.
Joseph Jose this video is a waste of time lol it should be titled “when you absolutely have nothing better to do, pull the amplifier from your moms tv!”
Instead of building a new board for it. If you examine the tv board it self, you can actually just cut out the amplifier section. The only thing left is to figure out the power, audio in and out. Done.
for the price of a 12v lead acid battery you can buy a 50 watt bluetooth amplifier that runs off of 5 volts, basically any usb port or just a few AA batteries, that functions and performs way better than this 5(?) watt analog amplifier lol. Neat project if you're bored I suppose... Dont use a propane torch for soldering though...
Definitely. I just like digging into old crusty electronics yanno? Something cool about it. I only use the propane torch for desoldering chips off of boards. Haven't had an issue yet... hope to keep it that way
Zac Price these days all is easier and cheaper to order from china. but where's the fun in that? i like these type of channels, where you can learn how to repurpose things. subscribed, hope to see more videos like this.
50 watts with 5 volts ? to have 50 watts rms the speaker need about +/-18/19 volts AC , from 5 volts to + 20 the amplifier need a huge stage High Voltage to delivery TRUE 50 watts ...for exemple i have onr bluetooth speaker 20 watts ....BULLSHIT it's capable of exactly 4 watts (2X2 with 10% distortion) or 1.2 watts x2 with "good" noise
MADJID HAMDINI can you please send me a bit of your opinions on the way your running the numbers battery type into the unit and the speaker and guage of wire and keep audio alive everyone. thanks again
Nice little project! But a lot of work for a rather crappy chipamp... Crack open an old car stereo instead if you want to build something similar. For example, an LA4708N only require a few external components and will deliver plenty of power at 12 V.
I take a pair of large tin snips...and cut around the entire amp area...and find the power wires in...they will usually be on the large caps, then usually the speaker wires, like on this video, will already have a connector on the board you just cut out...so find the audio inputs...and thats it..Look at the online info for the IC and find the sound inputs left and right...
Flyback or EHT transformers do not hold a charge it is the actual tube that acts as a capacitor and you can get a hefty shoch not from the wire that you pulled off but from where you pulled it off from.
that's good to know 4 people like me who r unfamiliar w/these things. in order to discharge it, would u take an insulated wire & touch 1 end to where the tv wire connected to the tube & ground the other end?
The giant capacitor in those things can be deadly as well. Even if there is a visible bleeder resistor, there may be no indication if that resistor is open (and therefore useless). Make sure the giant capacitor is really discharged and disconnected before handling it/anything, or it could be the last thing you touch.
And trying to ground something against the glass tube isn't going to work - the graphite lining makes it look a bit metallic, but its still plain glass on the outside! And a standard electricians insulated screwdriver isn't rated for 22kV of a colour TV tube, only for typical mains.
More modern CRT self discharge anyway, I have scrapped out 1000s of CRTs for the copper, and never once have had a shock. If it's been unplugged for extended period of time, the likelyhood of there being charge is small... (Australia here may be different for the states)
Learn the chassis numbering system 100's IF 400's vertical 500 Horizontal etc etc, If 200's is normally audio. so all parts in the 200 range will relate to audio parts. Also there this thing called a schematic which will show you just where each part connects. you probibly could have isolated and cut the board out and saved the rewiring chore. And I agree with t0nito, hurry up and build that amp so we can hear what your saying. Oh and for future safety reference the anode of the CRT holds can hols a charge up to 30000 volts. not the flyback transformer. discharge it, to the shield (wire) around the tube (ground).
Removing the red wire from the tube is the best way to get a very strong shock from a TV. You should use a wire that has a probe on the end hook the wire to ground then use the broke to discharge the tube. There is enough voltage at a high enough amperage to stop your heart stored in the tube.
Holy s*** dude! You are lucky you're still alive. You can easily be killed by the amount of amps you get shocked with from a television coil. Handing out this kind of Miss information is an absolute ridiculous liability.
If you were to place a 0.100uf cap on the output to ground you filter all unwanted sound. Basically you amp here is oscillating. Hence the nasty sound. Good work.
,pretty Kool salvageing trick very fast way to harvest parts or components Might be but difficult if things were in tighter spaces but nice trick thank you
Thanks for showing this project. Still have to buy PCB board, audio plug .Only thing is you can buy such audio amp boards cheap in eBay. Don't know if they are as good. Please post your suppliers' links in your commentary below the video along with the ID of the components you used. It would help us. Can you connect both audio channels together to one speaker? If so how?
you're right dude ^^ i've buildin sévérals amplifier with ic like TDA LM and co from old tv or old car radios and all work very well ^^ but i like to build amplifiers with a couple of darlington power transistor (TIP 142/147) one couple capable of + 150 watts and if used a double/triple push pull ,you have a monster like 500 watts and very cheap to make /reliable very easy :) good video thks
Hey bud, been watching your videos for a while. Love the ones about the joule thief drivers you built. I was curious, are you in school for electrical engineering? I'm wondering what you do that gives you such a fantastic knowledge base.
Grounds high voltage line to a ground line which is not connected to ground (pretty sure, your power plug wasn't plugged in, otherwise you wouldn't remove the red cable...).
not all boards are marked so make sure u get the right chip. there is also another tda chip close to the transformer. looks identical but just has a different number on it. dont think u can use that 1 coz i think its a voltage amplifier or something like that. any1 no if it can be used for audio amp or just voltage?
i have an old mini HiFi Sony tat has a great quality of sound, te amplifier is still good but te buttons and the desk tape and the cd player and the radio are broken... can you make us a video of how to extract the amplifier part from it... i will be really thankful
It would be the same basic procedure. Look for the same type of chip he discusses, verify it with a google search, and pull it from the board. I wouldn't recommend using a blow torch, as he did, unless you're skilled with it. For beginners, a soldering iron and desolder wick does just fine, and is a lot safer.
Love to fronds 6376472505 whastpp message Karan number of people who are not too long time and address for a bit but to me to have the same number and address and I am not going I to get the way I was just going I have a meeting in town and I will
I would have though you were just going to cut the amplifier section from the main PCB..be a-lot easier, amplifiers are very cheap, and its just as easy to buy a power chip amp assembled and ready to go from ebay for a few dollars. Also note its the tube that holds the charge, its best to take an grounded HV insulated probe and drive it underneath the EHT plug first, discharging it and then unplug it. Those chip amps are not powerful, nor are they Hi-Fi.
Mate, you 'grounded' that high voltage circuitry on that 'sliver thing' when the 'silver thing' isnt even grounded itself as the casing of the tv is plastic and the table its resting on is wooden! This could be HIGHLY dangerous and there is serious risk of electrocution, you just got lucky that the capacitors had already been discharged. For anyone else trying to do this, you need to touch that to an acutal ground, or this may be fatal.
Why don't you just cut the board then you have all the parts you need, then trace out the pins for audio input and power. Also turn up the mic volume on the camera, we can barely hear you.
Its time to remove some components... Proceeds to grab blowtorch... WOW Back in the day (dating myself) I use to work on Macintosh computers and I learned my CRT lesson. NOTHING will wake you up quicker than that, or put you permanently to sleep.
That is not how you discharge the high voltage! You need to ground the CRT. And you do that before you remove the flyback lead. And, no, six months of sitting unplugged will not assure the tube is discharged.
It has been brought to my attention that I have given terrible advice for how to properly discharge a CRT. If you are attempting this project, please refer to the following video by Mike the Scrapper on how to do it safely: ruclips.net/video/6dAMhqwWBwg/видео.html
Your video needs an audio amplifier
...also its the fucking tube that acts as a HV capacitor, not the flyback transformer. Just sayin. And FFS do moar homework before posting a vijeo like this, how many kids watch this and just think it's ok to go poking about inside one of these like you did?!
ClevelandStorms
ClevelandStorms so if that makes all together 20 watts if you were to double or even triple on a few parts you could theoretically make one with the same size board and have it pushing out 60 watts no problem. correct?
Yes, I'm definitely glad someone pointed this out to you. After being an electronic repair tech for around 40 years, I've seen others as well as been ''popped'' by this lead and/or the CRT when attempting to disconnect it myself. Although the newer TVs bled off that HV fairly well, they could still hold a charge. From experience I can tell you that this ''POP'' can be very painful. I won't even get into the old tube type TVs. Make sure that screwdriver is grounded before you attempt to take the cup & lead loose. A jumper with alligator clips works well. Also, it's good practice to do it with 1 hand. stick your other hand in your pocket while doing this. Other things that can really pop you are those electrolytic capacitors. Particularly those with a high capacitance rating (mfd or uf --microfarad amount). It's best to short the leads of these capacitors on the bottom of the board with a screwdriver as well. It's just better to be safe than hurting & almost afraid to continue with your project.
Being an old TV repairman I can tell you it's the picture tube that holds the hi voltage charge, not the flyback cable when it's unattached. Ive used amps out of TV's like that before, but I just sawed out the circuit from the motherboard and used it as an already built amp circuit
I think you need that audio amplifier for your camera, I can barely hear you.
me to
lol
Lol
t0nito, I don't think using this amplifier on the camera microphone would produce the results you desire.
MMMMEEEE TTTTOOOO000!!!
The irony of a video about amplifying audio sound being barely loud enough to hear isn't lost on me. Well done, bro.
I turned the volume of the video all the way up and forgot about it, then I clicked on another video and my ear drums exploded. (Typing this from hospital)
Maniac BehindYou 😂
DUDE WOW!!!!! I don’t know why I’ve been reheating and removing things with my iron one prong at a time when there is a perfectly good torch that does it faster cleaner and amazingly pleasant to experience.
Thank you for sharing your knowledge.
Some older TVs from 70s and 80s are modular and they have separate audio amplifier board. I use one for powering my horn speakers.
not all TV's will have a vertical audio OpAmp, depending upon the make and model of TV may have a dual in line package chip, a TDA2822 for instance. which is an 8 pin DIP package chip. All components to make the amplifier work WILL BE ON THE BOARD. But you will need to take a look at the datasheet as this video says to get an example circuit. Recycling from broken and unused electrical items is always fun. My whole channel is devoted to the same ethos. If you do some simple maths and some research about each of the components you can make some really useful things for absolutely no money whatsoever. GREAT VIDEO! KEEP EM COMING.
Cool project, although first time I see desoldering with a torch - seems to work well though....
Cool video besides your mic levels. To the haters on here., He never said it was practical or top of the line. It's a learning project made with salvaged parts. Make a video yourself if you can do better.
Most tdaxxxx chips are audio amps of some sort. The 2030, 2003, 2002, 2050 are for guitar amps particularly. Awesome build.
Thank you for sharing. Embarrassed that I never thought of using propane to get the parts off easily. I'm watching this video because I took apart a widescreen CRT TV that nobody wanted to get some heat sinks and discovered some large speakers with bass enhancing enclosures similar to Bose. This gives me inspiration.
Nice job. Competently done too, loved it. Put the amp in a small box with a couple of connectors for power supply and speakers and inputs and you have a usable stereo amp for small things.
I leave it on the board and cut it out with tin snips...I cut around the area of the amp chip and caps....then find out how to wire it...it is already made into a circuit so just leave it there...
nice review /fist of all ,don t buy from ebay -they look the same bat are cheap clones(heating very fast and up)the original one like this are gold if you know how to configure it.enyway ,nice project .i did once a amp from an old tda 2020...
Great video. Glad to see Cleveland hobbyist
The quoted 10 watts is only available at the high voltage and that is at 10% distortion in other words clipping. At 12 volts pre clipping you will be lucky to get 3 watts. At higher voltages you will also need a heat sink.
The TDA2009 should have a minimum supply voltage of 24 volts dc as a standard voltage for amplifiers in televisions, even in the flat panel lcd tv's
tda 2003 / 2004 AND 2009 are good to create noisy amplifier if used on bridge ;)my first DIY amplifier was a stereo use 2X 2 tda bridged for 2X 18 true WATTS :)
You all just mind fucked me
The TDA2009A used bridged makes a passable ELF radio output section too, as its good to several 100kHz...
Cool project
Good tutorial. Now there is a gold mine of electronical parts for tinkerers, with all the free curbside and junkyard crt tvs
The flyback is my favorite part!
Nice scrap build. Nice to see a young person interested in electronics. Be careful what you advise about high voltage. you were wrong about the wire holding a charge ,it's the tube. Also before messing with the TV, use a hammer to crack the neck back by the pins. Just a gentle tap and you will hear the air rush in. That will eliminate the danger of the tube imploding and causing injury.
your talking about the audio amplifier,I think you need that amplifier inside the tv to amplify your audio in your camera,we can't hear you,but don't worry i used my class ab amplifier to my lap top to hear your good and best explanation..God bless us.
i always corious about amplifiers in tv, some of speakers are really good for their sizes
That's cool! It would make a cool little battery powered guitar amp!
PERFECT PROJECT TO BUILD. THAN MAYBE WE COULD HEAR YOU!!!
Just tracing the speaker cable can reveal the audio chip. Most easiest method.
Ura Nium sometimes it’s not as easy
agreed sometimes its not that easy but following the tracks from speaker connection on the PCB will almost certainty lead you to the audio OpAmp. sometimes its a bit tricky but you will almost always be able to find what you are looking for.
why didn't you just hack off the amplifier section and re wire power supply and audio outputs! that could be easier, just thinking :)
Bleau sound like you don't no what the fuck your talking about
Bleau is absolutely right Gerrod. Nothing wrong in that
@@gerrodphillips2471 Sounds like you don't ;)
Just because he found the audio IC & it's associated components does not mean there may have been sections of additional circuits running through that area. Years ago, I had a Zenith Systems 3 TV that had plug in modules for different circuits. This TV developed an extremely loud, high pitched squeal from the speaker which the volume control had no affect on. It happened that the audio board also had the horizontal oscillator circuit on the same board. A component that isolated the circuits shorted out causing the frequency of the oscillator to become amplified to the extreme. It was so loud, it was annoying to people who lived across the street. Therefore, just because you think you've isolated all you need, do not take it for granted.
Just because he found the audio IC & it's associated components does not mean there may have been sections of additional circuits running through that area. Years ago, I had a Zenith Systems 3 TV that had plug in modules for different circuits. This TV developed an extremely loud, high pitched squeal from the speaker which the volume control had no affect on. It happened that the audio board also had the horizontal oscillator circuit on the same board. A component that isolated the circuits shorted out causing the frequency of the oscillator to become amplified to the extreme. It was so loud, it was annoying to people who lived across the street. Therefore, just because you think you've isolated all you need, do not take it for granted.
Parts harvesting at its finest. That is great.
Used the TDA2009A quite some years ago, and it is pretty reasonable in terms of sound quality, and also has some power. Even made an amplifier around it, that also used a LM1036 for volume, balance and tone control. It was capable of driving 4Ω loads with ease. Unfortunately, it is now obsolete.
You'll need to add a heat sink to that chip if you don't want to burn it out. It might not have had one in the TV, but from experience those chips get hot fast.
The propane torch to quickly heat up all 9 pins is a smart idea
That's doable on an old car cassette player too. Great video 👍
its not the ht cable that holds the charge its the crt its self
Simon Smith tv isnt grounded unless its plugged in too :)
neil froggy crompton Not unless the TV's Cable is 3-core!
Mr.Someone \Tom/ yes thats my point vid says u can short out lead to gnd but if theres no gnd in pwr wire ur dicing with death as high voltage was mentioned right?
neil froggy crompton Absolutely.
Mr.Someone \Tom/ i once opened up a phillips vga comp monitor when it stopped working, couldnt fix it so butchered it for parts (as i had identical 2nd one) & remember ripping out that lead.
my question is how long would residual pwr be in the crt?,as monitor sat on the floor for about 6 months+ .
could it have discharged while left unused?
I pulled apart a speaker/power bank combo device because I lost the original charger and fried it trying to charge it. Pulled it apart and there was a huge lithium ion battery, two boards inside a plastic part and two flexible wires going to the speaker on the other end. I separated the two boards and one was the amplifier. Found the two power points and got it working. The amp seems to be happy at around 3 volts. I'm going to try 4.5 from batteries. I'm going to make an enclosure out of something. and use the battery and guts from a small power bank to make a new amp and power bank. Yeah I know it was a power bank originally.
+1 on the propane torch. You can hold the circuit board over a cardboard box and whack the board against the box as you heat it. Lotsa parts!
Order them off Ebay for $2.38 and not have to lug the TV around. Just makes more sense on cost vs time, and alot easier to access.
Random Audio Guy What is the product called as?
So good! Appreciate worthwhile reuse. Thanks
Shocking in more ways than one
very cool. and i have a bunch of old tv's I'm about to scrap out and I've been looking for a way to use the audio out of them. i guess i should just dive in and start pulling them apart and setting the pieces aside for future use.
here in my country(Philippines) this tv's are still commonly used!!
Wow 10watts . Where the next club jam at lol.
The screeching sound is the TDA2009A when connected to a high impedance input - it doesn't like it. Phones save power by switching off their audio output sections which leaves outputs floating at high impedance. Once the phone is pushing out a signal the TDA2009 will be stable.
wearing earbuds, idk wtf everyone is complaining about. I can hear you fine. GJ
That chip is like 2 bucks, not worth salvaging and then putting on a new board. If you really want an amp, dremel the audio amp section of the tv pcb out and use it as is.
Joseph Jose this video is a waste of time lol it should be titled “when you absolutely have nothing better to do, pull the amplifier from your moms tv!”
Its EOL'd so its value will probably go up for a while for spares...
Nice vid bud
4:30 you could have just used a soldering iron.
Ali the retro kid true but he was outside without an outlet
I'm very much into soldering, but that was like 10x faster. Quick burst of heat vs constant heat at 4 points to desolder.
Interesting video. I heard it fine. Thanks for sharing.
Damn awesome
Excellent video dude!!
Instead of building a new board for it. If you examine the tv board it self, you can actually just cut out the amplifier section. The only thing left is to figure out the power, audio in and out. Done.
wow nice idea to remove any chips from old board!! lol
So cool!
for the price of a 12v lead acid battery you can buy a 50 watt bluetooth amplifier that runs off of 5 volts, basically any usb port or just a few AA batteries, that functions and performs way better than this 5(?) watt analog amplifier lol.
Neat project if you're bored I suppose... Dont use a propane torch for soldering though...
Definitely. I just like digging into old crusty electronics yanno? Something cool about it. I only use the propane torch for desoldering chips off of boards. Haven't had an issue yet... hope to keep it that way
Zac Price these days all is easier and cheaper to order from china. but where's the fun in that? i like these type of channels, where you can learn how to repurpose things. subscribed, hope to see more videos like this.
50 watts with 5 volts ? to have 50 watts rms the speaker need about +/-18/19 volts AC , from 5 volts to + 20 the amplifier need a huge stage High Voltage to delivery TRUE 50 watts ...for exemple i have onr bluetooth speaker 20 watts ....BULLSHIT it's capable of exactly 4 watts (2X2 with 10% distortion) or 1.2 watts x2 with "good" noise
MADJID HAMDINI can you please send me a bit of your opinions on the way your running the numbers battery type into the unit and the speaker and guage of wire and keep audio alive everyone. thanks again
whay about ? bluetooth speakers or a DIY bluetooth amplifier ?
Nice little project! But a lot of work for a rather crappy chipamp...
Crack open an old car stereo instead if you want to build something similar. For example, an LA4708N only require a few external components and will deliver plenty of power at 12 V.
I take a pair of large tin snips...and cut around the entire amp area...and find the power wires in...they will usually be on the large caps, then usually the speaker wires, like on this video, will already have a connector on the board you just cut out...so find the audio inputs...and thats it..Look at the online info for the IC and find the sound inputs left and right...
Flyback or EHT transformers do not hold a charge it is the actual tube that acts as a capacitor and you can get a hefty shoch not from the wire that you pulled off but from where you pulled it off from.
that's good to know 4 people like me who r unfamiliar w/these things. in order to discharge it, would u take an insulated wire & touch 1 end to where the tv wire connected to the tube & ground the other end?
The giant capacitor in those things can be deadly as well. Even if there is a visible bleeder resistor, there may be no indication if that resistor is open (and therefore useless). Make sure the giant capacitor is really discharged and disconnected before handling it/anything, or it could be the last thing you touch.
And trying to ground something against the glass tube isn't going to work - the graphite lining makes it look a bit metallic, but its still plain glass on the outside!
And a standard electricians insulated screwdriver isn't rated for 22kV of a colour TV tube, only for typical mains.
More modern CRT self discharge anyway, I have scrapped out 1000s of CRTs for the copper, and never once have had a shock. If it's been unplugged for extended period of time, the likelyhood of there being charge is small...
(Australia here may be different for the states)
you need an amp for your mike, to low volume
Learn the chassis numbering system 100's IF 400's vertical 500 Horizontal etc etc, If 200's is normally audio. so all parts in the 200 range will relate to audio parts. Also there this thing called a schematic which will show you just where each part connects. you probibly could have isolated and cut the board out and saved the rewiring chore. And I agree with t0nito, hurry up and build that amp so we can hear what your saying. Oh and for future safety reference the anode of the CRT holds can hols a charge up to 30000 volts. not the flyback transformer. discharge it, to the shield (wire) around the tube (ground).
Removing the red wire from the tube is the best way to get a very strong shock from a TV. You should use a wire that has a probe on the end hook the wire to ground then use the broke to discharge the tube. There is enough voltage at a high enough amperage to stop your heart stored in the tube.
Daaamn that's a Nexus 6
Holy s*** dude! You are lucky you're still alive. You can easily be killed by the amount of amps you get shocked with from a television coil. Handing out this kind of Miss information is an absolute ridiculous liability.
nice video
If you were to place a 0.100uf cap on the output to ground you filter all unwanted sound. Basically you amp here is oscillating. Hence the nasty sound.
Good work.
,pretty Kool salvageing trick very fast way to harvest parts or components
Might be but difficult if things were in tighter spaces but nice trick thank you
Thanks for showing this project. Still have to buy PCB board, audio plug .Only thing is you can buy such audio amp boards cheap in eBay. Don't know if they are as good. Please post your suppliers' links in your commentary below the video along with the ID of the components you used. It would help us. Can you connect both audio channels together to one speaker? If so how?
You forgot one important note. First disconnect the mains power! And let it discharge left over power.. Just in case some dummy gets shocked.
Why y’all complain about not hearing him??? I can listen to him Perfectly fine!! Y’all must be deaf
Nice
Really hope you think about re uploading this with improved audio or remaking it. Great video man
you're right dude ^^ i've buildin sévérals amplifier with ic like TDA LM and co from old tv or old car radios and all work very well ^^
but i like to build amplifiers with a couple of darlington power transistor (TIP 142/147) one couple capable of + 150 watts and if used a double/triple push pull ,you have a monster like 500 watts and very cheap to make /reliable very easy :) good video thks
Good job bro... 3 Cheers mate .... :)
The flyback transformer does not hold the charge , its the tube that holds the charge and this should be discharged to prevent a electric shock
Put a ground clip on that screw driver and to the chassis then as you pop off the HV cap you will aso discharge the 2nd anode safely.
Hey bud, been watching your videos for a while. Love the ones about the joule thief drivers you built. I was curious, are you in school for electrical engineering? I'm wondering what you do that gives you such a fantastic knowledge base.
Cool
I need to build a high frequency directional beam. Anybody have any ideas.
Grounds high voltage line to a ground line which is not connected to ground (pretty sure, your power plug wasn't plugged in, otherwise you wouldn't remove the red cable...).
I scrapped old tv with audio amplifier TDA1519B , would u plz demonstrate how to make audio amplifier with this IC
not all boards are marked so make sure u get the right chip. there is also another tda chip close to the transformer. looks identical but just has a different number on it. dont think u can use that 1 coz i think its a voltage amplifier or something like that. any1 no if it can be used for audio amp or just voltage?
Amanda, It's likely a frame amplifier/vertical deflection chip. A purpose specific amplifier, if you will.
i have an old mini HiFi Sony tat has a great quality of sound, te amplifier is still good but te buttons and the desk tape and the cd player and the radio are broken... can you make us a video of how to extract the amplifier part from it... i will be really thankful
It would be the same basic procedure. Look for the same type of chip he discusses, verify it with a google search, and pull it from the board. I wouldn't recommend using a blow torch, as he did, unless you're skilled with it. For beginners, a soldering iron and desolder wick does just fine, and is a lot safer.
Who are the 129 idiots that disliked this video? Fantastic work man, very informative
Love to fronds 6376472505 whastpp message Karan number of people who are not too long time and address for a bit but to me to have the same number and address and I am not going I to get the way I was just going I have a meeting in town and I will
I would have though you were just going to cut the amplifier section from the main PCB..be a-lot easier, amplifiers are very cheap, and its just as easy to buy a power chip amp assembled and ready to go from ebay for a few dollars. Also note its the tube that holds the charge, its best to take an grounded HV insulated probe and drive it underneath the EHT plug first, discharging it and then unplug it. Those chip amps are not powerful, nor are they Hi-Fi.
Nice brother! Thank you . How about the transformer? Why not 120 volt and a real set of speakers/?
Thanks! I did it. Unfortunately the amp was mono 🙁. But the speaker is good! 😊
You should have built a mono bridge amplifier out of the I.C. for a guitar amp (double the power)
@CleavelandStorms Question... why not just cut the section that contains the audio components out, that way they remain soldered?
I thought your channel was called Cleveland Steamers
Mate, you 'grounded' that high voltage circuitry on that 'sliver thing' when the 'silver thing' isnt even grounded itself as the casing of the tv is plastic and the table its resting on is wooden! This could be HIGHLY dangerous and there is serious risk of electrocution, you just got lucky that the capacitors had already been discharged. For anyone else trying to do this, you need to touch that to an acutal ground, or this may be fatal.
Cool stuff 'cus ther'd still be enough in the TV to make one of those low-grade home-made oscilloscopes.
Why don't you just cut the board then you have all the parts you need, then trace out the pins for audio input and power.
Also turn up the mic volume on the camera, we can barely hear you.
Wow that IC is made in Singapore??
I think using an old tv as a P.C. monitor with built-in speakers is way more better
Please give the list of audio amplifier ics mostly used in CRT TVs
Could this be used to amplify headphones? how much power does this output?
Its time to remove some components... Proceeds to grab blowtorch... WOW
Back in the day (dating myself) I use to work on Macintosh computers and I learned my CRT lesson. NOTHING will wake you up quicker than that, or put you permanently to sleep.
find the speakers output and you wil find the ic or transistor!!
That is not how you discharge the high voltage! You need to ground the CRT. And you do that before you remove the flyback lead. And, no, six months of sitting unplugged will not assure the tube is discharged.
You could have used something other than a trinitron
Why didn't you just cut out the section of circuit board that contains the audio circuit and wire it up to power and speakers??
Thank u for video sir.i thought of same idea