How to convert any 110/120V AC/DC Power Adapter to 220/240V Electricity
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- เผยแพร่เมื่อ 10 ก.ย. 2020
- How to convert any switched mode power supply from 110/120V AC Adapter/Power Supply to 220/240V electricity. How to convert charger from 120 volts to 240 volts. Convert AC adapter from 110V to 220v. Convert power brick from 120V to 220/240v. Convert 120 volts device to 240 volts outlet. Convert your device from 120v to 220v electricity. Convert internal power supply from 120v to 220v. Convert Netgear 120v power supply to 220v. Convert Netgear Nighthawk X6S AC/DC power adapter from 120V to 240V.
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Thank you for another great tutorial without any useless talking, odd intros, VPN advertisement and stuff like that.
Glad you liked it
G
simple yet amazing explanation
Thank you!
Sometimes in 120v devices the power MOSFET can have a lower max voltage rating, so it is good to also check that as well as the PWM IC.
Thanks for this very detailed video. Got a desolder station that I need to review to make sure it's ok to use with 240v. Moved from the USA to the UK and it was supposed to be dual rated, but the casing only includes 110v and it's too late to return.
Soldering stations are tricky ones. First of all they usually have a transformer inside which means you must replace it with a 240V version. That transformer usually only powers electronics inside of the station. When the heating element is usually powered by 120V or 240V so you may need to change that one too. What's the model of the station?
Is it okay if I use a 200v PSU on 120v? What would I need to change? Specifically 203 w, 200-240v xbox 360 PSU.
thanks for the great video,
i have a question, my adaptor has a 250 68uf 16*20
the only one i found of the same size is 400v 68uf
should i opt of a 450v of lower uf or higher uf or just use this one?
thanks for your help and i hope to see more vids like this one
If you can fit 400v 68uf into your device then it's a prefect choice. No need to go higher in voltage because 400V cap is what you actually need for 220-240 volts AC input circuit.
Thanks for this very detailed video,If I may asks if is this same for the XboxOne PSU rated 120v ?
I got one came with the USA XboxOne ,and need to do this conversion ,any suggestions ?
Thanks
Technically it's possible to convert that power supply to a 220v circuit but it's not that easy with this one. Because you need to remove one capacitor and solder two chokes on that place. It's a 10-minute work if you have those chokes but if you don't have a donor board then your best option would be to buy a new 220v power supply. ibb.co/6JLtNws
Thank you for the detailed video. Will the other component survive if we just change the capacitor only? Because instead of 120V we are giving 220V. I have the same power adapter and I want to use it in UK.
All switchable power supplies can work in the range of 120-240V. If it's a dedicated 120 volts adapter, then usually you need to work with its input circuit and replace 1-3 components.
@@ElectronicsComputers Thank you for your reply. It is exactly same as you explained. Changed with 450v 47uf (that is the one available from an existing 220v adapter) and it is working well. checked the output voltage and it is 19v.
Hi! This video helped a lot. Thank you very much!
Unfortunately, I've already made the power unit blown up and found your video afterwards. I think the pop came from the bridge rectifier. It says S1WB S 40 77 on it (no datasheet, 4 PIN DIP). Rectifier become open circuit. I checked the fuse (250V 1A) and other diodes as well. All working as expected. How can I find a replacement for it? Which ratings should I consider choosing it?
The power circuit is Yamaha DX7s' original Japanese power unit. It's blown up after hooking it up to 230V power outlet. Nonetheless, I had already separated DC rails of the PSU from the motherboard during the experiment.
If you show me some photos of the PCB where the rectifier bridge is located, I'll try to help you. Have you replaced the main capacitor?
@@ElectronicsComputers The caps are 200V rated and should be replaced by 400-450V equivalents as you said in the video. They didn't pop :)
I couldn't give a link but if you search for "VB78440 power supply" in google. You'll find a reddit topic says "Just need a bit of confirmation..." It's the same power unit as mine.
Hi thanks for the video it’s kind of helped me but I want to know if I can convert an American 110v Sony Amplifier to 240v for use in the UK? Is it the same process where I just change the same components you did on the power board or is there more to change? Thanks again
It depends on a power supply type. If you show me the picture of that power supply, with visible markings on the components, then I could tell you what to do. But again you can always just buy a transformer which costs about 50$ and you can safely use your amplifier.
@@ElectronicsComputers Hi, I have a similar question. Do you have an email I could reach you at? Buying a powered PA speaker that has 2 different versions for NA/Europe, but it's the same idea...takes mains converts to DC internally.
All the power bricks I've ever seen are rated for both 110 and 220vac. I go to Europe often and us laptops and small music stereo amplifiers all use these power bricks. so I assume they are ok yes?
All laptops, phones and stuff like that come with "travel adapters". Routers and some specific equipment are not designed that way. If your power brick is rated for 120V only then it's not designed to work with 220v electricity.
I didn't know that it was so easy. I have one 240V (two hot wires) outlet in my kitchen and garage. And ones I destroyed my food processor and a small FM radio.
It's not a universal solution but works for most AC/DC adapters like that. Your fried devices had a linear power supply which is based on a transformer. And the only way to convert them to 220V is to replace that transformer with a proper one.
Thanks for the video and the explanation. I need to convert dewalt dcb115 charger and in a video that I saw he added transistors(EDIT: meant resistors) and I didnt understand why. do you think it is necessary?
Maybe those were resistors not transistors!? Depends on the schematics and in most cases replacing the main cap and varistor is enough. it's not a problem to buy some resistors on Aliexpress the cost just a few cents.
@@ElectronicsComputers thanks for the reply and yep I meant resistors. but what are they for? and should I also replace the fuse?
@@idoriesenberg5297 The fuse will be fine. You need resistors to reduce the current on some components. in that case on a MOSFET. If your PCB has a dedicated place for those resistors then I'd recommend installing them to the board.
Does this mod apply to AC in put, AC out put as well? No conversion to DC for the output? Also, at the 2:20 mark, you mention the necessity of replacing the large electo capacitor but possibly also the fuse and rectifier bridge. At @5:20, you discuss altering the fuse via upgrading the varistor but you don't explore the rectifier bridge specs. Am I missing something here? Thanks so much.
I just gave some basic instructions for those who have at least minimum knowledge in electronics and understand what they are doing. If I tried to cover all possible scenarios, the video would be too long and complicated. There are several possible cases. Sometimes manufacturers make exactly the same universal power supply but with US plugs and label it as 120 volts. If you disassemble it and see that the big capacitor is rated for 400-450 volts, then that power supply will likely work without any modifications, or at least you'll have to remove the varistor or replace it with a proper one. In terms of fuses, there's no need to replace them for a regular consumer-grade switchable power supply. If it's special equipment that operates under high current, then maybe I'd use a fuse with a 0.5A higher rating. Diode bridges are all rated nowadays at least 500 volts because financially, it's a dumb idea to use or manufacture one that is rated for something lower. But in some cheap generic power supplies it still could be the case. So, in general, we only replace the big electrolytic capacitor and the varistor with the 10D471K rated Max Continuous Voltage AC: 300V. The rest of the components does what has to without any modifications.
@@ElectronicsComputers Thanks so much. Appreciate the detailed reply.
Thank you for the video. I really learn new things. The explanations were very good. Unfortunately I bought a dewalt charger (dcb118) from USA and it 110v 60hz. Can I do something with that or should I throw it? Can you give me an advice?
Thank you very much.
Show me the picture of that charger internals. Usually replacing the main cap and varistor helps in most cases.
This may help it’s for a dewalt dcb115 but should be the same (unfortunately it’s in Arabic)
It look like he know what’s is his doing.
He is using a Capacitor 400V 100uF + Thermistor NTC 10D-9 + Varistor 275v
th-cam.com/video/7DJRJk5MQrU/w-d-xo.html
This is another one (in English) but I will not trust him as he look like that he has no clue what he’s doing.
He is using a Capacitor 400v 100uf + Ceramic Resistors 5w 0.33ohms
th-cam.com/video/rc5ieIGUYBo/w-d-xo.html
Maybe some one could give a better explanation at what will be the best upgrades.
I wish the other video where as clear and simple to follow as the Electronic&Computer video.
Hi,
Im doing the same, from 110V to 220V and came across the same varasitor as you show in this video, you didnt have to replace it? Or should i look for a higher rated one?
Thanks
For 220 volts the minimum varistor's value should be 300 volts. If it's less then definitely replace it.
Thank you very much! Fantastic video and super clear. One question left. You say replace or remove the varistor. But replace with what type. I have a JVR-10N201K here. But I don't know if I have to pull it out or replace it. Thanks again!
If you google that varistor model, the first link will show you the list of all models with the specs. JVR-10N201 is for 120V protection. For 220-240v you need a varistor that can handle 300 volts which is JVR-10N471K. This varistor will cost you about $2 with delivery: alii.pub/6gufjr
Or you can simply remove it from the PCB and use your device without that component.
i have a device that i need to do the same to (120 to 230) i have a look at pcb but i not sure if it possible
Send me the pictures (or attach them here from a cloud) of that power supply, I'll see if it's possible.
Hi, thank you for the video. I am a beginner , so sorry for the silly question for you. Do I have to change the transistor too? It is A UTC MPSA42L TEA, with maximum ratings 500 for base voltage capacity, 3000 for emitter voltage and 500 for collector energy.
No need to change it.
...I need a second opinion....I wanted to buy a new varistor (300V) but the guy at the store asked me if it is a PTC or an NTC....I told him it's not a thermistor, but he keeps insisting that also the varistors work on positive and negative temperature?! I am confused, plus...how do I know? the datasheet doesn't say anything understandable for idiot-like human beings like me!@@ElectronicsComputers
@@evapantaleoni1405 A varistor has nothing to do with temperature; it's a voltage-dependent component. For example, if it's rated for 300 volts (which is the one used for 220-240V protection) and, let's say, your residential building has a bad neutral connection, you may end up with 380 volts coming into your apartment. In such a case, the resistance of the varistor will drop to zero, causing a short circuit. This, in turn, will blow the fuse inside the power supply, cutting off the high voltage reaching your device. That's how varistor protection works. In the video description you'll find a link for varistors. They cost less than a dollar. Here's also a link for a datasheet which shows what model you need according to your Max Allowed AC voltage: pdf1.alldatasheet.com/datasheet-pdf/view/47877/CERAMATE/10D270K.html
THANK YOU SO VERY MUCH!!!
thanks for the video. would you know if a Nintendo 3DS charger changing only these components of the AC circuit will work?I was afraid to do that, and the voltage of the DC circuit would double the value
It's impossible to double the output voltage by messing with the input stage of the power supply. That adapter comes in two variations 110V and 110-240v. You have to disassemble the case and look at the voltage of the main capacitor. If it's higher than 400v then it's a universal charger even though it says 110v on its case. If that cap has lower voltage, then you need to replace it and also check the varistor. If it's present on the board then replace it as well or simply remove it.
@@ElectronicsComputers Thanks for the answers. so, the AC input circuit already has 350V capacitors, there are no varistors (IMOV) on the AC input. but the charger does not release the DC voltage when connecting to a 220V network the charger only works on 110V networks. for that reason I figured there must be some change needed in the secondary circuit.
I have a Levoit 300s humidifier. It has two 450V capacitors. Should I change something there? Thank you!
That humidifier also has a 220v model and the only difference is a power cable. So just buy an adapter for the plug and it will work perfectly in your country.
@@ElectronicsComputers Thank you so much
Hi, thanks for informative video but why you used 400v capacitor? Can i use 250v capacitors because my home power voltage is 250vac
We're are not talking about AC voltage, it's about DC. For example, if your country has 220 volts grid, then the peak rectified voltage will be approximately 311 volts. This is why we always need some good voltage reserve on caps.
@@ElectronicsComputers thanks a lot for your help, after changing capacitor to 400v my SMPS now converted to 240v power supply.
But what about the transofrmer? It should be capable if handling increased voltage pulses.
MOSFETs are used to regulate this pulsating DC voltage. The MOSFETs can control the flow of current to smooth out the pulsations and regulate the voltage. The control circuitry adjusts the duty cycle of the MOSFETs' switching based on the input voltage level to achieve the desired output voltage.
After the MOSFET regulation, the voltage is sent to the transformer. The transformer then steps down the voltage to achieve the desired output voltage. I've converted dozens of power supplies, and never had any issues.
@@ElectronicsComputers yes, but still, the IC circuit that drives the MOSFET must be capable of dealing with increased voltage (shorter duty cycle), right?
very interesting video. Can I use same technique for a coffee machine? it's working with 110v and consumes 1500W, but I want to move it to a country with 220v power. Will patriciate any advice. Thanks
It's most likely possible (depending on the model), and I've done it once before. However, the heating element must be changed to operate at a specific AC voltage, in your case, 220 volts.
ROLAND E86 from Europe 220V. Can I install a switch to convert the USA input power of 110V to make it work???
$8 brand new AC adapter that supports both 120 and 240volts: amzn.to/3PAYFg5
Firstly, please forgive my ignorance of basic electronics. From what I'm assuming by your video, if the power adapter is already 'matched' to your electronic device (current rating, voltage and polarity) then the mods you've shown in this video don't alter that... it only alters the input power to the adapter. The adapter will still output the correct DC, amps and polarity for your device after the mod? Is there no need to confirm things like the polarity of the mains power if you've changed country? Thanks so much.
Usually all power supplies designed to work in the range of 110-240 volts even if they have north American plugs. But sometimes manufacturers design the input stage of the power supply specifically for 120 volts and in that case you need to replace those components with the ones that can support 240 volts. The polarity and the output voltage will be always the same.
@@ElectronicsComputers So if I just purchase a different power supply, as long as the input power matches the new mains power supply and the output on the adapter is the same as the output power on the original power supply it should be okay? i.e. original p.supply input = 120VAC, 60Hz, 240mA/ original p.supply output = 9 VAC, 2000mA/ new p.supply input = 230-240V, 50Hz, 140mA / new p.supply output = 9V, 2000mA, 18VA?
Sir I have a GE electric range, the hot plate operates on 220v but oven control board uses 110v, I needed to convert it to 220v. By the way I don't have the schematic.
What's the model.
What is the metal plate soldered on the circuit board?
heatsink
@@ElectronicsComputers
Thanks...why is it soldered to the board and also what if I remove it...will it still work?
@@Dhona7770 heatsink , dissipate heat don’t remove it (it’s like removing the radiator of your car )
@@EL90291 thanks
What about output voltage? Is it doubling?
No the voltage will be as rated on your power supply. It's impossible to double it this way.
Switching PS has output feedback that will maintain output to a fixed value no matter what input is.
mine 110 adapter 335v 50uf long capictor its was working fine on 220 electriccity my voltage 240 one day i was run this on my generator that capictor blast can u tell me which capictor i should go
400-450 volts rated.
Hello, pls I need your help urgently. I have this 40" Samsung TV brought to me from the US. The AC 110/120 I want to convert it to 220/230. The capacitor in the panel is 420v and 100uf. I do not know which to change it to and or whether to change the varistors
All Samsung TVs are made with the universal power supply which works with 120-240 volts. I would just google marking of the varistor just in case, but I'm pretty sure it will work as is.
Hi . I watched your flash tube replace video.
How do we know that the flash tube is faulty ?
I have d3200 , it pops up fine but the flash fires too much dim .i can see the flash's dim fire only when i wrap my hands around the flash in a dark place .
Help please
Thank u
In most cases with such symptoms the problem in the tube. You can replace it with any tube from old film camera or buy a new one the link in the description. they are dirt-cheap.
Thank u so much .
I did'nt expect you will reply this fast.
Can you give me your email ,so that i can contact you for any other query.
Thanks
I can answer your questions here. It will be useful for others too.
Thanks bro
I have dewalt DCB090 charger. It is written 120V AC on the back but, the main capacitor is 400V and there is no varistor. What should i do ? I think it is ready to 220V AC. What is your opinion
Most likely it will work for 220V without any problems but if you want me to check just send me a photo of the top and bottom side of the PCB. If there's only one 400V capacitor then I'm 90% sure it will fork fine but if there are two of these then it requires a little modification.
@@ElectronicsComputers Yes only one 400V. Others are like 35V or less
@@necromecro The it's a universal 120-240V adapter.
Is it possible to do this to an ATX power supply?
Depends on the schematics but in most cases it's possible.
My 12V adopted is designed for 100-110V input but I am using it on 220-240V as in my country 110V AC is not available. It is working good . I faced no problem. Now suggest me did I need to replace its capacitor or not.
My Adopter is compatible with FOST5260. Plz answer
Only after opening the case you can tell for what voltage it was originally designed. In most cases those adapters are made for different countries, they may have different plugs but the boards are the same. If your adapter have already been working for a long time (over 6 month) then it will be fine. If it worries you then try to carefully open it and check the voltage of the main cap. There's always a risk of fire if that adapter blows up when you're not home. So either check it or unplug the adapter when you leave your home.
@@ElectronicsComputers
Thanks for reply. I did not use it much . It is US type adopter. I opened the case . The specifications of main capacitor are:
Color : brown just like yours
450V, 6.8uF
I see your video carefully. I think 450V are OK but 6.8 uF is low as you used 150uF.
Specifications on the body of my adopter are:
Model: PS-2.5-12-25WTI
Input: 100-120V AC 50/60Hz 0.8A
Output: 12V DC 2.5A
Now everything clear. Can I use it without tension for longtime.
@@ElectronicsComputers
Waiting fo you answer
@@Aseelandpetcare Yes, it's totally safe for 220-240 volts. The capacity of the main filtering cap varies and it depends on the power of the power supply. So, no worries!
@@ElectronicsComputers Thanks
Will this method work for an amplifier?
It will works for most switching power supplies.
I think there could be problems with the bootstrap for the IC
It could only be in some extremely rare cases. I've converted dozens of different power supplies for various devices and equipment and never had any complaints.
The peak voltage of 220vac is higher than 300V and for that reason i understand why we need to use 400V-450V capacitor,but why did you mentioned that 275V rated value for the interference suppression cap is enough?won't they be damaged by the peak AC voltage?Thanks.
In all the devices I've seen, the interference suppression capacitors are rated for 275-300 volts. Even in Europe, where the voltage is typically 220-240 volts, there's still a 50-volt reserve. The AC line voltage remains fairly stable, and even if there are occasional spikes, they are unlikely to harm the capacitor. Additionally, in the event of surges, the varistor inside the unit is there to manage and protect the entire system.
@@ElectronicsComputers Thanks for your respond.I attached a link for an SMPS 120VAC to 5VDC photo: ibb.co/hyQcL44/jpg
At the attached photo you may see 2 electrolyte capacitors(blue arrows)200V/4.7uF.I guess i need to change them both to 400V-450V,right?But what about the rest of the components?like the 2 resistors(red arrows),the coil,the chip(red circle)and all the smd components around,are they supposed to handle the higher voltage or i need to replace something?Thanks.
@@shonl9743I've seen your message in the notifications but then it was removed by youtube. It's not in the spam list too. So try again. If your power supply has two big caps with the same specs, then that power supply is built by another schematic and it's a little bit different process. I need to see the detailed photos from both side of the PCB. Just upload your photos to the cloud and share your links here.
@@ElectronicsComputers Yes,i made a photo of the PCB both sides and i made a link for the photo through ImgBB-image hosting website,but youtube removes it each time.Can't figure why?.I will try to find a way to show you the photo.Thanks.
@@shonl9743Yes, I got the image. I'll reply you later.
Hi, would you be able to tell me the part number and model number of the Netgear Adapter? I might have the same one as yours, and if it is, I would just get a converter instead of opening it up first, thank you :)
Unfortunately, I don't have that router anymore but if it says on the power supply, that it's a 120V version, then you have to use a step down transformer. There's no 240 volt version with the US plugs.
is that i need change fuse also?
If it is just a consumer electronics device, there is no need to replace the fuse. Simply replace the capacitor and the varistor.
@@ElectronicsComputers what type varistor i need use? sorry i don't know much about varistor
Hello, is it possible to do this on an AV Receiver?
It works for most devices.
An online seller sold me a Portable hot air station that is rated 110V. What component do I need to change to make it usable for 220v?
What's the model of that station? Most likely you'll need to replace the transformer which can be hard to find.
@@ElectronicsComputers It a Chinese portable hot air station with digital LCD. The model is: GJ-8018LCD. The brand is GongJue
@@mibjt You'll need to replace the heating element for sure and maybe a resistor that goes to a triac that controls the temperature of the heating element. But I'm not sure about that resistor. Google for a 220V schematics (it's available) for that device so you can check out all those components.
@@ElectronicsComputers Thanks for the suggestion. I have some old ATX power supplies lying around. Maybe I can harvest some relevant parts from there.
I have capacitor 450v / 150. Is this 220volts? Thank you
Yes, it's a universal power supply which will work in the range of 110-240 volts.
Hello, absolute beginner here. I have a subwoofer that I got from the US. I live in Europe and the subwoofers input is 110-120v, as we know the voltage in Europe is 220v so I was afraid to plug the device right into the outlet. I opened it up, and I found the capacitor. It is a 450v120uF capacitor. My question is, will this work hence the type of capacitor? Will I need to check something else like the fuse or something? Or since the capacitor is 450v rated it should be okay? Also why would it be labeled 110-120v if the capacitor is 450v?
Thank you for the help and keep up the good work! Subscribed!
I'm 99% sure that that device will work perfectly in Europe. Most manufacturers create a universal power supply, because they sell their products around the world and no sense to create two different units. I would also check the input protection. There should be a varistor that connected in parallel to AC line after a fuse. Usually it's a blue or yellow component. You can share some pictures of the PCB if you need more help.
@@ElectronicsComputers Sure, I could send you some pictures. What would be the best way to send them to you? Thank you again!
@alvin4781 Just attach shareable links from the cloud. Could be also useful for others.
@@ElectronicsComputers Here is the link for the photos: drive.google.com/drive/folders/1JRoE30-xDCj5_iPusxGO0Vs3cLkq8_iz?usp=sharing
If you need other photos taken or if you can't read something on the pcb, let me know.
@@ElectronicsComputers I just posted the link under this comment, but it's not appearing anymore for me, TH-cam might think it is spam and might be deleting the comment. Let me know if you can see it or not so I could figure out another way to send it.
very nicely done , i have just bought a set of ridgid (AEG) lithium tools and its charger is rated to 110V for the USA , i need to convert it to 220v for our power here in south africa , may i ask you for your assistance please , it is a pretty simple circuit by the looks of things but i am not too clued up on electronics , do you mind assisting ??
many thanks
Richard moss
Take some close up shots of the PCB with its components, so I could see their specs and give me the links.
hi again , to which address can i email the pics and info to please
ok main cap is 200v 100uf , varistor is a 10271 , mosfet is JCS 4N 60FB , i have a 472 varistor and 450v 100uf cap in stock , mosfet i hope will be ok , looking forward to your reply
rich
@@richardmoss2904 For that device you can use any 82-100uf electrolytic cap rated 400-450 volts (pick one that fits perfect into your device case). For me "varistor 472" sounds like a capacitor, don't confuse them, they look the same. You need a varistor rated at 300-400v. I f you can't find it then simply remove it from the circuit.
@@ElectronicsComputers thanking you sir , i will give it a go
thank you for assisting me
In refer to your answer:"...There's no AC input protection, and there's no protection on the DC side to safeguard the device...",what protection is used,in general,on the DC side?
Apologies for the delayed response. I couldn't locate your comment among the numerous ones. Typically, in the DC stage of a power supply, there should be at least a basic voltage stabilizer and short circuit protection. However, in this particular power supply, there's nothing of the sort. It's as simple as it could possibly be.
@@ElectronicsComputers Yes,you have numerous comments indeed,since you made a very nice well explained video that can help alot.Thanks again for your help.
@@shonl9743I guess, that's what you were needed in the first place: alii.pub/6wynat
We buy those power supplies for client's routers, modems, electric tools and some other stuff.
@@ElectronicsComputers Yes i know.But since the original one(110VAC)was very compact(small and light),i thought i could use it.Thanks for the link.
Nice idea❤🎉
Please, I have faulty inverter for a dc stove which produced 470v AC, I was unable to repair it. How can I double the 220volts AC to 440volts or make an inverter that will produce 470v AC from 12 or 24volts dc.
Thanks
You have to fix that inverter, because it's near impossible to buy such a unique thing.
@@ElectronicsComputers 😳😱👌I appreciate any support in fixing this stuff.
Thank you 🙏
How about vice verse?
There's no need to anything in that case. Unless it's a transformer based adapter.
I change supply adopter 110 in to 22o with main electrolytic capacitor that is 220 circuit with no series load but out put 22 volt output show but original volt is 12v dc 1,5amp model no ml 18-v1120 a11s made by adopter (Leader electronics inc)
This could work in certain devices, but many of 120v power supplies use a voltage doubler
If yoy have one with it, the psu would instantly die
In case of a voltage doubler it's even easier because you don't need to replace two caps that are connected in series. Al you need to do is cut one trace (between caps and diodes) on the PCB and remove or replace the varistor.
Hi, my power supply board for UB820 PANASONIC PLAYER HAS A blown up capacitor rated 220v 100uf . It's made for North America imported to my country. It was working on converter from 220v to 110 v but suddenly after one week my capacitor blown up. Please help me how to fix it. Planning to change the capacitor to 400v 82uf or 440v 100uf.is it safe to go
400V cap is a minimum recommended value and also don't go lower than 82uf. When the capacitor blows it also kills the fuse, varistor and the diode bridge (or 4 diodes). So check all components in the input circuit.
@@ElectronicsComputers
OK thank you. If my varistor and diodes still working do I need to change them for compatibility to 220v or its enough to change the capacitor as stated. Once I reach home will send u a screenshot of my board. Thank you very much sir
@@ElectronicsComputers
HI again do you have an email to send my screenshot. Thanks
@@jihadnader8599 Usually, there's no need to replace the diodes if they are fine. My email is in the channel description.
I need the opposite direction ... from 110v to 220v.
That's what I did in the video.
Can I do the opposite? 220V to 127V?
To do the opposite in 99% of cases, you don't need to do anything. However, you can replace the varistor for lower voltage so that surge current protection will work properly.
@@ElectronicsComputers In this case I was referring to a cheap soldering heat gun station I bought expecting it to be 127V, but the store I bought only had 220V units 😢
@JoaoPedro-ki7ct In most cases, all you need to do is replace the heating element. Heat guns usually have the same schematics but different heating elements that are rated for 120 or 220 volts. If it's a big hot air station with a transformer inside, then you also have to replace the transformer.
@@ElectronicsComputers It's a JCD 8898 station, I wish I knew about the heating element trick earlier, I would have bought one or two 127V heating elements alongside it too already.
I guess I'll have to wait for the station to arrive and then wait 17 more days again to replace the elements.
Thank you for the enlightening me still, I was already considering adding a 220V outlet somehow or buying a voltage converter on a tight budget.
Well thats why my 110v TV blows in that specific capacitor when i connect 220v
Easy fix!
My friend asked me if its possible to convert a hair dryer from 110 to 230 using modding instead of a large 1000w transformer kit. My first instinct kicked in and I told him even if I did, its not a good idea.
In theory, it's possible, but it depends on how everything is organized inside. Basically, you need to replace the heating element and maybe the motor, depending on how it's connected. This means you're only keeping the original case from the hair dryer. I wonder what's the value of that hair dryer if someone wants to go through all this. I mean, it's just a 10-20 euro device. And the size of a 1000W step-up transformer will be like the size of a big kettle and will weigh at least 5 kg. Also, if you have a 1000 watt hair dryer, then maybe for personal short use, a 1000W transformer is OK, but if you're going to use it for professional purposes in a hair salon, you need a 2000 watt transformer.
How do you know 40% of the capacitance is fine? How do you know they didn't make the circuit to use the full capacitance? (Why would someone put more capacitance than needed?)
Note: electronics student here, so sorry if these are idiot questions.
The capacitance of a capacitor first of all depends on the power at which power supply rated and on the free space which can accommodate that component. Also if you put a cap with slightly higher rates then your device may last longer because the capacitance of your cap will degrade over time.
@@ElectronicsComputers Ok, had no idea capacitance degrades over time. Interesting. Thank you.
Seriously, why isnt every appliance just 110-240V by default?
Yes, you need to replace the driver. Download the driver before you replace the card. In case if you have wired (Ethernet) connection then it doesn't matter.
Greeting from 🇩🇿
I need help converting DeWalt battery charger dcb107 from 110v to 220v.thanks
Send me the photos of the PCB and I'll tell what components you have to replace.
Hi there
th-cam.com/video/yw6AxFheIww/w-d-xo.html
What your comments?
hi sir. i just bumped through this site, i have a 110V waffle maker that i would like to convert to 220V. is it possible to use this same method? i checked the PCB board and seems like it only hgave the 250V capacitor, no suppression cap or varistor.... so do i just replace the capacitor? how about the heating elements? do i need to check that for voltage?
Not sure about the heating element I need to see the photo of the PCB from both sides. Anyway, if the heating element is powered directly via AC line then you have to replace it too.
How to send you photo?
All good talks but from nose