{885} Testing High Voltage in Microwave Oven, HV Capacitor Discharge

[@jaym5938]

When you bridge the capacitor with insulated pliers (and not a resistor), does that not damage the capacitor? Any damage 'in circuit'? Thank you!

[@HaseebElectronics]

indeed it tends to draw maximum current from the capacitor. and it will not damage it. but the best way is to discharge the capacitor using any load to prevent sparking

[@jaym5938]

@@HaseebElectronics Thank you! Sparking scares me ;) I will build the device you're using!

[@therealjammit]

It doesn't electrically hurt the cap, but the sparks might probably start "welding" off metal from the leads.

[@mohamadmansour2595]

Most test leads of Multimeters rated 1000v if it is good brand, precautions must be taken when using cheap Multimeters.

[@HaseebElectronics]

yes you are exactly right

[@voeurnsear6033]

Thank you for sharing a great video for us.

[@protection4541]

Hi engineer Do you need an oscilloscope to repair the inverter board of all types of air conditioners

[@HaseebElectronics]

welcome dear yes. oscilloscope is very important tool in modern electronics circuits. using oscilloscope we can see the signal shape and behavior, specially in microprocessor based signals

[@EidyRamazy]

Your video about Trans Microwave was great, thank you

[@m1983n1]

Thanks for sharing technical secrets and knowledge's.Inmy knoledge no other chanel like yours.very deeply explained practically and theoriticaly. God bless you sir🙏🙏

[@arpir97]

And do not break the ceramic parts of the magnetron, especially the pink part, it is made of Beryllium ceramic. Inhalation of microdoses of Beryllium causes fatal beryllium cancer in the lungs.

[@ChrisHalden007]

Smart solution. Thanks

[@olisahopene947]

excellent videos

[@aghilmousavi7450]

باسلام وسپاس عالی بود.OK

[@dayalolive]

Thank you for sharing this, really helpfull circuit.....🙏🙏🙏🙏

[@HaseebElectronics]

it is my pleasure

[@jimmybonges451]

Good day Mr. May I ask you something a little outside of the HV Capasitor in this uour video. I have Sharp Micowave that using HV Dioda, part number is HVR-1X 4 which connected from 1pin of the HV capasitor to the chasis. This dioda was defected/shorted affected the main fuse was always blown off. I’m encountering difficulties to find that dioda. My question is, Can I replace the above part number HV dioda with the part number is HVR-1X 3. Your suggestion is much apprexiated🤝

[@German_byte]

Thank you. I wonder if some technicians have been killed by microwave ovens.

[@HaseebElectronics]

bets regards indeed it is the most dangerous item in the world

[@electroniquepassion]

👍😉

[@HaseebElectronics]

thanks a lot

[@technicalcracker8926]

hello sir, i have made this tool ,i used 2.2k resistor and 2.2mega ohm insted of 2 because of non availability at shop.i used 220v,but the multimeter is showing nothing,why?

[@fringeminority5676]

Wow! You just brought my OTR troubleshooting to the next level. I'm gonna make this tool asap. Currently after voltage testing the primary terminals at transformer all my other tests in the hv circuit are done using ohms. Problem with ohms tests is, if it tests bad component is bad, but if ohms tests good it can still be bad. Doing this hv testing I can now be 100% correct on the defective part. Thank you so much sir, I'm subscribed

[@twk4223]

7:10 Are the Cap Discharging line of resistor (20k Ohm) and the Cap Measuring line of resistors(2M Ohm +2k Ohm) joins at Common? As you moved too fast I could not see them clearly.

[@HaseebElectronics]

20 K resistance one end for discharging point for capacitor 2nd end is connected to common terminal and 2 K resistance 2K resistance 2nd end is connected to voltage measurement terminal and 2M ohms resistance 2M ohms resistance is connected to high voltage test point

[@twk4223]

@@HaseebElectronics Thank you for the clear instructions on the Cap Discharging cum Measuring Tool! About 5 weeks ago, I managed to repair my Sharp MW oven replacing the HV Cap and the oven was able to function for the next 2 weeks before it wreaked havoc again. This time round, the turntable, fan and light were on whenever the door is opened though the "Start" button is not pressed. Later, I found out that the Primary Door Switch button is stuck and with the replacement of the micro switch it was able to function normally. Because whenever I discharged the HV Cap, I just short it with 2 screw drivers then a plier which I don't really like to do so. Finally, I found your great informative channel with so many interesting contents. If I am not mistaken, you must have gotten this electronics skills through college education, which I feel safe and comfortable unlike other channels that do not follow the proper way of doing things correctly! Thanks for all your uploads that I may find some useful. Thank you!

[@tvbox8478]

👍

[@shefqetkaralliu6816]

👍

[@Ianf1x]

So you have made a shunt to make voltage Safe for meter 😊 very nice 👍

[@HaseebElectronics]

indeed it is voltage divider circuit. same as it is used in high voltage probes

[@khalidraja5327]

Good idea 👍

[@DesiMekar]

sir..if we provide 220v in HV coil..so we get low voltage in 220v side

[@hiz-n-lowz1577]

Hi, great vid, im confused how just a diode and capacitor is acting as voltage doubler, isnt it just acting as your typical half wave rectifier circuit to supply pulsating DC to magnetron? also does the HV from capacitor go through the magnetron and towards the ground on the other side of magnetron or does it go through the other winding that is going to magnetron? Its very confusing to me in the wiring diagram, it looks like the magnetron is connected to the - side of the capacitor and therefore no voltage is getting to magnetron..... thanks

[@Radhapzr]

very nice explanation.

[@hugoegon8148]

Take care to use probes made for measuring this HV. Stay safe and healthy. 😊

[@lelmus3277]

To measure 5V?

[@hugoegon8148]

@@lelmus3277 No, the probes for the tool attached to the HV test points. It seems he used normal multimeter probes , that are usually rated for 1000V. That could be dangerous if the HV is much higher.

[@HaseebElectronics]

you are right the bribes quality must be better to meet HV safety. these probes are normal multimeter probes.

[@lelmus3277]

@@hugoegon8148 I stand corrected.

[@siavash8379]

👏👏👏👏 great

[@HaseebElectronics]

best regards

[@Trucam2020]

Thanks. I think that your multimeter probes don't allow voltage measurements above 600-1000 v

[@HaseebElectronics]

best regards. you are right the multimeter probes fall in safety class in 1000 volt. we can select high voltage probe or we can add some extra layer of insulation.

[@AbdullahAli-hv5ym]

MarshAllah Allah Mubarak jazakallah khair 💕

[@heshamzentahy9528]

WHAT THE BENEFIT OF THE HV DIODE

[@ladbla1752]

Thank you for sharing your idea.

[@RXSVN_2]

Excellent

[@HaseebElectronics]

best regards 💕

[@crazyfactstnmy]

This is resistor or high voltage diode

[@HaseebElectronics]

it is high volatge diode www.alldatasheet.com/datasheet-pdf/pdf/445594/DACHANG/CL01-12.html

[@crazyfactstnmy]

@@HaseebElectronics you say in video 2m ohm resistor

[@palwindersandhu2031]

Thanks very much sir....

[@diyaialgarah9914]

شكرا جزيلا لجهدك النبيل

[@willsxd0]

Saw your picture for the first time in reflection of meter screen🎉

[@HaseebElectronics]

wow so nice

[@willsxd0]

@@HaseebElectronics i ve been a student of u in practical electronics its an honour to get a reply from you thanks for everything sir

[@miloradgraovac74]

Brare JA sam koristio kombinirke,nego primi TI od srca velike pozdrave❤

[@HaseebElectronics]

hvala puno dragi brate

[@AbdulMomenZargar60]

Shaam Bakher Ho Bhai Sahib

[@mohamedantri9433]

الله يحفضك من كل سوء استاذي الكريم ويزيدك من علمه ...وشكرا على الرد ....❤❤❤❤❤

[@adiseshukumpati24]

useful sir😊

[@umarboss99]

aslam o alikum sir mery pass ek ic h jes k oper Q100 lekha h or nechy vf26 is ka koi equitant mel sakta h ? or es ki datasheet bhi bta dain shukriaya

[@umarboss99]

vf26 h ya ve26

[@W1RMD]

Thanks for sharing this practical circuit with us.

[@HaseebElectronics]

it is my pleasure

[@arunkumar-bh2dp]

useful information, but how to calculate the resistor value for this high voltage testing. according ohms law or any other else

[@YoutubeBaruHamid]

Makasih ya sdrku sudah berbagi informasi nya 👍❤️

[@nayanjagirdar8408]

👌👌👌👍

[@susantaatha6468]

Excellent. Thank you sir.

[@muhammadishtiaq24]

Informative video keep sharing

[@m.mudassar6318]

خوبصورت انداز ❤

[@HaseebElectronics]

شکریہ پیارے بھاءی

[@TABE-O]

Great trick that one Haseebi!! Thanks!!