The diode testing setting on multimeters shows the diode forward voltage drop in millivolts, not resistance. A normal silicon diode will show about 600-700mV and a Schottky diode around 250-350mV. Also you won't double the current capability of a diode by using two in parallel. Their forward voltage drop has a negative temperature coefficient, so whichever diode gets slightly warmer than the other will pass more current and that will heat it up more until it is passing almost all of the current while the other one passes very little.

The datasheet recommends and 1N5824 diode in its typical application circuit, also as it isn't a smd component it will allow more heat dissipation.

Your kid was so cute, I hope she/he is still good in 2022! :)

I had the SS24. I replaced SS34 with SS24 and it worked again. Thanks a lot for the video.

great to see an old antex xt25, my first iron

Thanks. I repaired my module using your method. Only difference is that I used a thruhole diode to allow it to disapate more heat. Worked perfectly.

Excellent video, thanks! Encouraged me to repair mine except i switched out the SS34 for a SS54 to get the extra current and it works great again now. Also, i would advise the addition of a small adhesive heat sink on the chip helps it a great deal. Mine works fine now up to at least 3A.

hey. can i use regular 0.7v diode on my buck boost converter? the diode on my buck boost converter smoked when i connect the polarity of my power supply reversely.

Thanks for the video dude. The problem I have is there is no output at all and a red LED is on in all of my 5 modules that I bought recently. What's the problem here?

Sir is there any possibilities of controlling of output voltage without rotate the knob using pwm Arduino..

Happy Birthday :)

Brilliant! always was wandering why these modules broke on me. Go to try your fix because as a hoarder ;-) I have all the broken modules in my junk box, you know.. could be used someway lol.

i used a 12v dc fan and used xL6009 booster module. for input i used custom li-ion powerbank. on setting voltage to 12voltage, the fan speed is not par as it should be, it increases but not as it ahould be. and n while fan is running, voltage shows at 4 or 5 volts on display.. what could be the reason, little help will b appreciable.

so, i can do this technic for rectifier bridge also... right?

i like the background opera that you have in the video. much much better that what most people put. i thought u were going to put the diodes in series. i would think the previous one broke down due to over voltage and not to over current

Thanks! I know where to look if the board stop working, and nice piggyback the 2 diodes together 8-)

Thanks alot for the video sir, i was not have the same SS34 diode so i soldered three SS24 diodes. Now my module is working fine.

Thanks you helped me resolve the problem

Hello sir, in my broken boost converter the in+ and in- are shorted. So İ dont think the problem is the diod in my situation. Do u have any advice for my problem? Thank you.

Assalam o Alaikum. Can I use this module for 15 to 20 high power 3watt LEDs in series?

how about soldering regular big 8Amp (Non SMD) Diodes on little wire? Should help spread heat too.

I got szbk07 300 watt and one is putting output same as input other one shows ver low 160 mv u got any idea and chip is lm5116

What do you think about OKY3498-4

X2 diode =/= X2 current flow. It is not additive but sure pn-junction stabilization with lesser stress on the main load carrying diode.

In my xl6009 buck boost converter,I had increased output voltage above 45v and suddenly my display showed 0.0v and some 220mA. Xl6009 was getting very hot as well as the ss34 schottky diode at the output section. Checked and found the diode to be shorted. Removed it as per your method and soldered a SR360 schottky thru hole diode on to the pads. Working great now and i dare not increase output voltage above 30v because capacitor at the output is rated at 35v. Thank you for your video and hope this information will help someone. Thanks again !!!

Can i put 5v input module?

@2:40 should be your birthday by now so happy birthday ! :D

Dear can u tell me the diode name and number plz caz my module also give me low current my module damaged by myself caz I give the power my mistakenly wrong way

This video is good becuase today my XL6009 Boost Step Up Converter diode literaly vapourised into thin air after accidentally the module got short circuited.

I bought a XL6009 step up converter, but it only outputs 50V. Tested it with two voltmeters. I also tested inputing 5V and 3.7V, in both cases the output voltage is 50V. The potentiometer has no effect on the output.

I have a problem with LM2596 Buck converter, it's totally fresh but suddenly it's not working, I change the diode but still, it's not working. Now, what do you think?

Great video, please share more video !!

So the max input current is not 4A anymore, it will be 8A right? well the ideal Amperage if it is doubled is 6A

I have this problem when my output cable is short, when a leave it for a second. And my child told me that the boost convertes is smoky. When i notice, and i see that the ss34 is burning. Luckly a can get ss34 replacement from old broken cellphone charger. And it work fine after a replace the broken ss34

What do u sold in the buck ? I mean to say name from circuit ?

Thnk u sir its work

Thank the youngin for the birthday wish. Mine was the 7th.

Sir Excellent Tutorial, I was looking around lot of stuff to rectify or to find troublesome issue with Step Up Module XL6009E1. Fortunately got your demonstration. Could you please help on issue i am facing up. As i am connected to 5v battery (Its Power Bank rated at 2.1amp) and also 9v Battery with 1amp to step up module and boost to 12v, if i am connected to dc motor all off suddenly it falls to 4v else, shows 12v. Also i have worked with alternative Step up Module MT3608 and the result is end up same. I am not able to figure out. Why voltage is getting drop all off sudden.

i have this and it boosts voltage but when i hook say arduino to it ,it dam near puts out nothing. any ideas? could it be that diode in it?

My board heats instantly what can I do..

nice!

Thise diodes are not even rated for over 40 volts, however it is still working.

i have the same problem when I give it 5v input it would be the same output it is not boosting, I check the diode and it giving beep sound in both polarities what should I do now? how can I check IC?

really dairing removeing it like that. suprised didnt pull trace.

S it's working

Putting 2 diodes in parallel is probably unpredictable in current sharing.

Thanks bro I had the same problem, but it's not recommended to solder two diodes in parallel

Lol your house even the songs is just like mine... Did you mean you can get closer/higher current through put. Ohm's law still applies. I've not seen a volt and amp booster in the same device... Recently

Literally just bought mine brand new like this

With this module there is a big problem, when the voltage drop at the inlet below 3.3 V, the output gives 40V! Even if the resistor is exposed to a current of 5v

actually the diode is shorted, acts like a wire with zero resistance

Did do you have a sister? The background voice?

The SS64 should also fit it the place.

you had enough space to use a not smd diode like 1n4007 or more powerful. anyway nice video.

Was that your daughter she sounds so sweet

You could've put them sideways :)

How to change 143C 103W

Sadly on every video your voice is saturated or too loud so its clipping... :/

Are bhai mera voltage regulator kharab ho gya h pls help me

I can't help but wonder why you would choose to completely ignore your kid.

if i do not have ss34 diode can it be replaced with another diode?