Great video mate. Been trying to do this exact thing for some time now. Have my generator imputing the required signal. And all that happens is the main resistor on the board heats up. Couldnt find a short anywhere to cause this
Did u try to start in on reduced duty cycle? If not try setting 10% duty then powering.. make sure ur signal has offset so it's starts at gnd ... Steve
@@ethanmellett2726 strange not sure why resistor hot when it's not running? Did it come from a working microwave? I think u have to have 5v plus and minus 2.5v try it with signal on b4 you apply mains.. start on say 10% then turn up.. work out how much current is on that resistor measure voltage drop on it then use ohms law to calculate the current mate... like I say I don't have an inverter now I gave it to one of my subs who needed one for his microwave 🤣🤣. Is it the exact same inverter I showed ? Steve
I have a panasonic microwave with the same inverter but when i try to turn it on with the inverter,it blows the fuse away and when i disconnect the inverter board it lets me use the grill function.what could be the issue?
Zvs is an AC sinewave output and low voltage as you said, so you would need to remove the primary (as its wound for high voltage input at low current) then rewind it with many less turns with more stands in parallel to handle the lower voltage higher current. Also the transformer is set up for high voltage input flyback topology ie a large gap in the core, this is done to avoid saturation, if you drive it push pull the gap should be closed up, maybe you could slice a couple of pieces of another core if theres no space to close the core with the original bobbin or modify the bobbin seems as your removing and rewinding a thicker primary. But my answer is yes you can drive it with a Zvs, another option to avoid rewinding the primary is to use an intermediate step up transformer this would be a lot easier and you could also use the centre tapped single indicator ZvS which in my opinion is much more stable and overall runs better and more efficiently.. hope this helps Steve
@@T2D.SteveArcs Thank you. The closest thing I've been able to achieve is just putting together a high-voltage DC output from an old flyback-transformer from those old CRT TVs. The primary coil is driven with 5 turns centre tapped, with the ZVS driver getting an input from a drill battery. I was able to power a magnetron (producing microwaves as a fluorescent light bulb lit up) with the setup alone and just wondered if a similar and simplistic yet more efficient setup was possible with the inverter microwave technology.
@@T2D.SteveArcs no, unfortunately I do not. I have quite a few of the conventional microwaves with the MOT’s though. But I will buy a brand new one at some point and use it’s magnetron setup.
Thanks for your videos. I have a Panasonic Genius 1300W Microwave with similar inverter as you have demonstrated. It shuts off/chips the breaker after 2-3 secs. The door switches are working. If I disconnect the magnetron it operates for whatever time set. Reconnect the magnetron and chips after 2-3 secs again. Could this be the inverter board. Someone suggested that it could be the an issue with the IGBT Transistor.
@@T2D.SteveArcs My apologies for the late response to your offer. I definitely accept your offer. I could email you directly for the details if that is ok
I have a new unit made by Kenmore in the USA, the inverter starts up but goes off after a sec, repeats over and over until it gets warm then starts cooking. I unplugged the 3 wire connector to the board and it does the same thing, so the board must not be getting a return signal telling it the inverter is on. What kind of signal is it?
Sounds like you have a failed component on the board, check the silicon ie rectifier, igbt, diodes, and capacitors .. the board should do nothing with the signal plug removed
@@T2D.SteveArcs Yea, I'm getting up to speed on these, I used to work on the older ones for yrs. Not sure how to test an IGBT, I suppose I will will learn now. Lots of good youtube vids like yours helped me. cheers mate.
@@vernonbosshard9317 thanks mate.. igbts like most silicon usually fail short circuit so you can check that with a multimeter on continuity mode or resistance mode, if you don't have a meter you could use a battery and lamp to see if it's short...... Thanks for watching Steve
@@T2D.SteveArcs So come to find out the IGBT had a bad solder joint, the solder looked good but it was hollow, fixed that issue, then the most puzzling thing ever for me on a microwave, I fought ALL kinds of weird issues, control board acting funny, not working with the cover on but fine with it off, sometimes not. So this microwave has one screw to hold the mag on, and a slot on the other side, turned out the metal mounting was bent slightly on the mag and it wasn't sealing tightly, RF radiation was messing up the electronics. I have never seen this issue before in all my 20+ yrs of repair, but back then they used 4 screws to mount them. This one ATE my lunch. This style of mounting is dangerous! I fixed the mag and so far so good, not one hiccup since. Fingers crossed!! Never give up, watch and observe the clues even if they don't make sense.
I tried running and there is no high voltage output but the inductor on the circuit got very hot what might be the cause of this? I am running mine by grounding the orange wire not using a square wave.
You need a squarewave at the frequency and duty cycle I said in the video, however if parts are getting hot without it running you may have a problem, check your igbt isn't shorted
No I wouldn't arc it dont forget an arc is virtually a short circuit and its only a single igbt not designed for arcing so it will probably die... Steve
@@T2D.SteveArcs yeah that's what I thought. I just got one of these from a scrapped microwave and was wondering how to turn it on. Then again, lots of smoke and flames and sparks would make for a pretty good show... thanks!
You would use the command signal to the board to switch a relay and energize the transformer and voltage doubler but I'm not 100 percent sure it will work perfectly as the transformer capacitor and magnetron are matched...
Great video. Thanks for sharing 🙂 . I am working on a lg smart inverter microwave. I observed the start button is not working when pressed repeatedly and other keys are working. What could be the possible cause and solutions. Thanks 👍
Of course I come across this video after I'd spent ages reading forums on how to set mine up, haha Obviously don't short the outputs to ground, doing so on mine it blew some disk capacitors which were hard to get replacements for Also my one is a rectangular variant that requires the 110hz signal at 50% duty to the pin which you have connected the 10K resistor as doing so myself didn't work. Beyond negative ion generators and microwaves, what other uses would such a powersupply have?
I love your videos. Much appreciated.
Thanks mate. Your support is Much appreciated
Steve
Great video mate. Been trying to do this exact thing for some time now. Have my generator imputing the required signal. And all that happens is the main resistor on the board heats up. Couldnt find a short anywhere to cause this
Did u try to start in on reduced duty cycle? If not try setting 10% duty then powering.. make sure ur signal has offset so it's starts at gnd ...
Steve
Actually just looked at vid it looks like I was using-2.5v to +2.5v
Not sure the resistor should be get hot when it's not even running?.
Havnt got an inverter to hand now to look
@@T2D.SteveArcs just tried it with a reduced duty cycle at 2.5v still no hv output. But the resistor still gets hot
@@ethanmellett2726 strange not sure why resistor hot when it's not running? Did it come from a working microwave? I think u have to have 5v plus and minus 2.5v try it with signal on b4 you apply mains.. start on say 10% then turn up.. work out how much current is on that resistor measure voltage drop on it then use ohms law to calculate the current mate... like I say I don't have an inverter now I gave it to one of my subs who needed one for his microwave 🤣🤣. Is it the exact same inverter I showed ?
Steve
I have a panasonic microwave with the same inverter but when i try to turn it on with the inverter,it blows the fuse away and when i disconnect the inverter board it lets me use the grill function.what could be the issue?
You didn't actually show how to test to see if it works?
very useful thanks!
Could you drive the flyback-inverter primary coil with a ZVS driver? Hence, running the transformer with a DC input of maybe 12v?
Zvs is an AC sinewave output and low voltage as you said, so you would need to remove the primary (as its wound for high voltage input at low current) then rewind it with many less turns with more stands in parallel to handle the lower voltage higher current. Also the transformer is set up for high voltage input flyback topology ie a large gap in the core, this is done to avoid saturation, if you drive it push pull the gap should be closed up, maybe you could slice a couple of pieces of another core if theres no space to close the core with the original bobbin or modify the bobbin seems as your removing and rewinding a thicker primary. But my answer is yes you can drive it with a Zvs, another option to avoid rewinding the primary is to use an intermediate step up transformer this would be a lot easier and you could also use the centre tapped single indicator ZvS which in my opinion is much more stable and overall runs better and more efficiently.. hope this helps
Steve
@@T2D.SteveArcs Thank you. The closest thing I've been able to achieve is just putting together a high-voltage DC output from an old flyback-transformer from those old CRT TVs. The primary coil is driven with 5 turns centre tapped, with the ZVS driver getting an input from a drill battery. I was able to power a magnetron (producing microwaves as a fluorescent light bulb lit up) with the setup alone and just wondered if a similar and simplistic yet more efficient setup was possible with the inverter microwave technology.
@@arkohmay you have a microwave inverter?
@@T2D.SteveArcs no, unfortunately I do not. I have quite a few of the conventional microwaves with the MOT’s though. But I will buy a brand new one at some point and use it’s magnetron setup.
@@arkohmay take a look at my other videos you will love them if you like high voltage
Awesome tutorial. Thank you.
Hey Mike thanks, this video is pretty tame and I will upload another video soon showing what this 30kw transformer can really do😅👍👍
Steve
thanks for the demo
Thanks for your videos. I have a Panasonic Genius 1300W Microwave with similar inverter as you have demonstrated. It shuts off/chips the breaker after 2-3 secs. The door switches are working. If I disconnect the magnetron it operates for whatever time set. Reconnect the magnetron and chips after 2-3 secs again. Could this be the inverter board. Someone suggested that it could be the an issue with the IGBT Transistor.
@fffinga Yeah it sounds like you have a short somewhere. Maybe IGBT, they are prone to fail short.
@@T2D.SteveArcs Thank you
I have a spare inverter I can give you if you are in the UK ...
@@T2D.SteveArcs My apologies for the late response to your offer. I definitely accept your offer. I could email you directly for the details if that is ok
@@fffinga I will give you an email address at some point today
Steve
I have a new unit made by Kenmore in the USA, the inverter starts up but goes off after a sec, repeats over and over until it gets warm then starts cooking. I unplugged the 3 wire connector to the board and it does the same thing, so the board must not be getting a return signal telling it the inverter is on. What kind of signal is it?
Sounds like you have a failed component on the board, check the silicon ie rectifier, igbt, diodes, and capacitors .. the board should do nothing with the signal plug removed
@@T2D.SteveArcs Yea, I'm getting up to speed on these, I used to work on the older ones for yrs. Not sure how to test an IGBT, I suppose I will will learn now. Lots of good youtube vids like yours helped me. cheers mate.
@@vernonbosshard9317 thanks mate.. igbts like most silicon usually fail short circuit so you can check that with a multimeter on continuity mode or resistance mode, if you don't have a meter you could use a battery and lamp to see if it's short......
Thanks for watching
Steve
@@T2D.SteveArcs So come to find out the IGBT had a bad solder joint, the solder looked good but it was hollow, fixed that issue, then the most puzzling thing ever for me on a microwave, I fought ALL kinds of weird issues, control board acting funny, not working with the cover on but fine with it off, sometimes not. So this microwave has one screw to hold the mag on, and a slot on the other side, turned out the metal mounting was bent slightly on the mag and it wasn't sealing tightly, RF radiation was messing up the electronics. I have never seen this issue before in all my 20+ yrs of repair, but back then they used 4 screws to mount them. This one ATE my lunch. This style of mounting is dangerous! I fixed the mag and so far so good, not one hiccup since. Fingers crossed!! Never give up, watch and observe the clues even if they don't make sense.
@@vernonbosshard9317 👍👍
I tried running and there is no high voltage output but the inductor on the circuit got very hot what might be the cause of this? I am running mine by grounding the orange wire not using a square wave.
You need a squarewave at the frequency and duty cycle I said in the video, however if parts are getting hot without it running you may have a problem, check your igbt isn't shorted
so can the high voltage be directly arced or will it overload the voltage doubler?
No I wouldn't arc it dont forget an arc is virtually a short circuit and its only a single igbt not designed for arcing so it will probably die...
Steve
@@T2D.SteveArcs yeah that's what I thought. I just got one of these from a scrapped microwave and was wondering how to turn it on. Then again, lots of smoke and flames and sparks would make for a pretty good show... thanks!
If you want to see arcs check out my other videos, I have videos of absolutely monster transformers 4ft arcs 300,000 volts 🤣🤣
Steve
If I want to put a Transformer instead of the card, how do I remove the protection to turn on the screen and make the commands work?
You would use the command signal to the board to switch a relay and energize the transformer and voltage doubler but I'm not 100 percent sure it will work perfectly as the transformer capacitor and magnetron are matched...
@@T2D.SteveArcs The screen turns on for a few seconds and turns off if the inverter power is removed

@@T2D.SteveArcs I want the relay to keep working as required of it
@@T2D.SteveArcs Thank you very much for the interest
@@user-gx6rl3kl3s then there is a single back to the screen, you need to find it
Nice channel
Thanks mate
Great video. Thanks for sharing 🙂 .
I am working on a lg smart inverter microwave. I observed the start button is not working when pressed repeatedly and other keys are working. What could be the possible cause and solutions. Thanks 👍
The control board is a touch pad
It could just be a worn touch button. Try bridging it manually and see if it starts
@@T2D.SteveArcs okay thanks
@@isiakajimoh4842 no problem mate... 😁👍
@@T2D.SteveArcs I tried to bridge it and I came up working. I discovered the connecting flex three of the lines has broken.
Could this be used to drive a tesla coil?
Yes Tuopeek did a video using this to run a vttc
Of course I come across this video after I'd spent ages reading forums on how to set mine up, haha
Obviously don't short the outputs to ground, doing so on mine it blew some disk capacitors which were hard to get replacements for
Also my one is a rectangular variant that requires the 110hz signal at 50% duty to the pin which you have connected the 10K resistor as doing so myself didn't work.
Beyond negative ion generators and microwaves, what other uses would such a powersupply have?
Thanks mate for this . Its handy to know how to get that version going... did use it for anything yet? ..
Happy 2021
Steve
So what can we do with it
My friend ran his Vacuum tube Tesla coil on it 🤣👍
Steve
It's on his channel "tuopeek yt channel"
I want to hack inverter board to transformer how i tell board that inverter work good
I dont understand your question my friend sorry
هو يريد تركيب ترانسفورمر بدلا من دائرة الانفرتر ويحاول إلغاء الحماية من كارتة التحكم الخارجية ويجعلها تعمل بشكل طبيعى