Volt-modding the CH341a Mini Programmer - LFC#278

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Информация о Volt-modding the CH341a Mini Programmer - LFC#278

Название	:	Volt-modding the CH341a Mini Programmer - LFC#278
Продолжительность	:	18.39
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Просмотров	:	93 rb

Clearly explained and well videod showing clearly what needs to be done - I'm off to modify mine now so wish me luck!
Comment from : @retrocomputinggrotto

Wrong! The data lines are 33V when using the device The voltage on the data lines WITHOUT connection is about 5V but as soon as you connect it to a chip and start communicating the voltage in fact IS 33V So the modification is not only stupid it is also totally useless and even harmfull!
Comment from : @jarnovilen5259

You saved my life while repairing a bricked laptop
Comment from : @user-cansu602

con this programmer (ch341a ) read the 93cxx eeproms ??
Comment from : @arieettinger8175

Tip 1) Get yourself some wire wrap/Kynar wire and lose the enameled wire brTip 2) Still have your enameled wire? "Strip" it by burning off the enamel with your soldering iron Sanding or scraping your wire will only make it weaker And you are going to solder it anyway
Comment from : @MrWaalkman

Naptiniz bana türkce diline çevirip tbrYorum yazın lütfen
Comment from : @mycar_oto6458

Debe tener mejor pulso en la mano porque las soldaduras deben ser más precisas para cosas micro Y no ser tan tacaño con el estaño Pero excelente video Cual es el link para los software de programación de BIOS o UEFI?
Comment from : @YOTUBADICT

I'm not sure if this would be necessary when the current is less than 1 milliamp
Comment from : @somber8233

I don't think you have to do this because soon as chip connect with softwarebr voltage automatically dropped to 33v so you don't have to mod the programmer now
Comment from : @T8-Schrader

Important info for this mod!brThe output of the 3V3 regulator is not stable enough to work reliable with all Flash-ChipsbrAfter doing this mod, I was able to read/write multiple chips But I came across one, that I could read fine, but the CH341 would "crash" aka disconnect from USB, as soon as I would try to write to itbrAs it turned out, I needed to add some capacitance to the output of that 1117 33V regulator In my case, I added a 1µF and another 100nF capacitor right between the 33V output and ground (pins 1 and 2 of the regulator) That fixed the issuebrI hope, this comment can save some people from wasting a day debugging this ;)
Comment from : @NebukadV

I thought the socket could supply 5v too so will a 5V chip program with data lines at 33V or do we have to swop the chip supply back?
Comment from : @campbellmorrison8540

Someone defenatly wrong about this
Comment from : @jaimecosta2966

cover that wound with plaster its safer and i dont have to be sick watching it ty
Comment from : @nb1843

Hello, After this process when I connect to the bios chip it get unknown device I had to solder back all It is not working from 32V
Comment from : @budosfasz

Thanks for the inspiration, my version: ivgyme/14Uocojpg
Comment from : @honzakratochvil

i did this, but the data line measuring 31 volt, altough the ch341a vcc is 33 volt
Comment from : @adifirdaus8204

doing youre mod it all whent to hell the divice know is not fuctional thanks bro for the bul crap
Comment from : @josepartida8185

but what if i want to write 24c? isnt it need 5v?
Comment from : @arifryo6823

Thank you broI will mod my programmer
Comment from : @dilanoclarke9163

Problem is people like the guy said, nothing wrong with the devicebr youtube/J8-Sh7DjiXw
Comment from : @sk0mi

you do not need to mod this device voltage wil drop as soon you start read ore rhite and besite that the amp are way to low to burn any chip you talking about 007 micron amp
Comment from : @wimmeke111

Merci mon ami, following your clear instructions I saved my mobo following your clear instructionsbr and your English is perfect for me 🙂
Comment from : @philippepourrat2256

I was expecting to see the modded programmer in action, writing or reading some chips, otherwise how can you tell that the operation was successful? Anyway, thanks for the tip, I wasn't aware of that ridiculous bug of the design of this thing
Comment from : @paleopteryx

Thank you so much 👍now I can program my eeprom 👍👍👍👍
Comment from : @dsi7782

Ch341a pin no 28 is vcc 45v Minimum to 53v Maximum support in this line… i don’t know why you put 33v in vcc
Comment from : @JAMSHIDMOBILELAB

I do this but it not working , when i want erase the chip , it's disconnect by itself, what's wrong?
Comment from : @gymstrengthhakim8453

all these mods unnecessary the programmer will adjust itself to 33v when programming I tried it myself and programmed many chips fine also Sorin proved it he has a video about this matter not downvoting your video but it is just unnecessary work
Comment from : @Customer22374

I'd like to see a demonstration of the unmodified version actually causing some harm Are there any known BIOS chips that die with this thing? I just used a bios programmer at work for the first time and it happened to be this exact one, unmodified So I ordered one for myself too Now I'm wondering how crucial this mod is
Comment from : @xxDrain

Do you need to mod the voltage to use the 18v adapter?
Comment from : @quinten2546

EM CAD Drafter / Designer
Comment from : @josephshaff5194

You, and everybody in the comments section should probably watch the video by Electronics Repair School on this programmer
Comment from : @badgerfool1980

Do you not need a 5v power to use a ST93S56 which is an automatic Memory eeprom?
Comment from : @tstuart7333

I just swapped my 8 tb bios to new board, great vid , thought i lost all my data,
Comment from : @johnwells558

What is the point of this tutorial? I have the same programmer and I haven't modified it at all To rewrite the memories, I use adapters and it's ok (with jumper set to 1-2) What you don't say is that: jumper on 2-3 is for the ISP interface I use it successfully as USBisp and in Arduino IDE
Comment from : @toninica

I broke the pin 6 of u2 thx :)
Comment from : @vextorfx6243

FYI Apparently this mod is not necessary Here's another video about itbr youtube/J8-Sh7DjiXw
Comment from : @0ctivate

Can u use it one time and be successful mate???
Comment from : @MrGoddlie

Very beautiful my dear brother and forward
Comment from : @gamalkhalaf8017

Looks like the Chinese (assuming) don't miss a trick when ripping designs That ZIF socket is a remake of the "prized" 3M TEXTOOL socket The one on the programmer is actually spelled TFXTOOL The actual 3M socket alone would be far more expensive than this (wonderful) little programmer "Kings of RipOff"? GR8T legacy to leave your children Just saying BTW, came here for the "fix" and you were clear and concise That being said I F-it and broke the pin off Next! :)
Comment from : @ovalwingnut

Can the Ch341a be used to program an ATtiny13V microcontroller?
Comment from : @Jim5150jvc

Great vid
Comment from : @johnwells558

There is no problem to fix,once you put the chip inside you`ll get 33
Comment from : @TheNickstyleStation

Hello, i see this video x 4 5 6 7 time, i am familiar whit microsoldering, but i fund i indonseain guy smart ass, :), she cut a line of circuit (5v from pin 28)from the back and shoort- circuit 33v whit 5v in jumper mode,more easy and fast ,i want to know if is legit, if is , is a util mode wher u can put a jumper to use it avain whit 5v :),and maybe a idea for a new video from you
Comment from : @bandinimarcelo4689

I do this modification but it does not Work
Comment from : @gymstrengthhakim8453

@Adamant_IT - What camera or microscope do you use to zoom in? Thanks,
Comment from : @_kicaBo_

Wow nice 👍
Comment from : @mdmanik1669

Hey Not sure if you still read these comments Can you tell me why you have to tie pin 28 to GND Why could you not leave it lifted and untied Would it not just be open After all We are basically disconnecting the 5v rail from the IC Also the CH341a itself requires 5v to operate does it not? So if Pin 28 is tied to GND how does it source 5v It must actually run of 33v as well?
Comment from : @Vinnie2x

your work is good but i have to add this note and warning to make the CH341 fully working belowbrWarning: put a SMD cap between the 33v out from the regulator and the ground otherwise the programmer will be fully unstable and unuasble and the mod will be bad
Comment from : @MichaelVx

Thank you I have the same iron I love it
Comment from : @andynull8869

Hello Sir, I want to unlock the dev mod of my chromebook I am trying to find a way how to flash the bios it is Winbond WSON8 6x5mm I am newbie, what do you recommender to flash it? does this flash programer ch341a works? would the 5v be dangereous for the chip?
Comment from : @itlifehacks5562

Excellent stuff,thanks!! What's the intro music?
Comment from : @ebbflow4591

I performed this step by step Now my ch341a cant be recognized by Windows It didnt have a problem connecting before the mod Any ideas?
Comment from : @Jay-ly4sz

man, you don't need a jumper because near that leg is located 33v road to that you can solderbrphotosbr picmysku-st net/uploads/pictures/03/76/12/2021/04/27/060191 jpgbr picmysku-st net/uploads/pictures/03/76/12/2021/04/27/669529 jpgbr(remove spaces)
Comment from : @dimapopov141

theres only one problem you needed that voltage for the other type bios chips non spi lmfao
Comment from : @jediknight2350

Can I use the 33V on my bios chip 25Q256JWEQ which is for MSI B550m mortar wifi? Or do i have to use 18v?
Comment from : @bastisebastian2609

Will it program 1gb bios chip??
Comment from : @thesumitkmr

hi there! I bought two of CH341A every time I connect I got this error: brI got the light on board on but nothing can be read in the PROGRAMMER brCurrent programmer: CH341 ID(9F): FFFFFF(Unknown) ID(90): 9000(Unknown) ID(AB): AB(Unknown) ID(15): FFFF(Unknown)
Comment from : @joeurban2069

I'm Writing on an old win 7 laptop USB 20 64mb How long does it take? Write light is flashing awaybut no other response yet after 10 minutes Maybe I need this mod firstedit I used new blank ic and works How to unprotect original?
Comment from : @Swenser

Thanks so much for the fantastic step by step video good sir! brbrSuccessfully modded my own with this guide which led to a successful bios chip reprogram (following next video) and brought a dead computer back to life You are the MAN! brbrCheers
Comment from : @OriginalMG1

Brother this mini programmer work on 18v bios chip or need with 18 volt adapter
Comment from : @xbillygangx

I have a question Is it possible to program an ITE super io chip with this programmer ?
Comment from : @user-sr3xg6wg5w

Nice
Comment from : @gtosama146

Thank you man, saved my chips No wonder why some of my chips got damage and probably some with a of corrupt data
Comment from : @classmaster

Does this mean I don’t need the 3v adapter?
Comment from : @jldpittman

Привет! Ответь, пожалуйста, с какой целью была эта переделка с 5 вольт на 3,3 вольта? Ведь программатор выполняет свою работу и без такой переделкиbrСпасибо за видео!
Comment from : @Denis_Borovik

The flashing is getting slow
Comment from : @gersonlausa4196

Er, I wanted if I could ask you something since I hardly know anything regarding electricity I connected the CH341A from my PC to another PC's motherboard to flash a BIOS onto the chip For some odd reason, I don't know why, I turned on the other PC while the CH341A was still connected to it from my main PC As soon as I hit the power button on the other PC, my main PC rebooted Later on I also discovered that the sound doesn't work on my main PC anymore Could it somehow be that one I turned on the other PC while CH341A was connected to its BIOS chip it somehow sent a surge back to my PC and killed my onboard soundcard? It did afterall manage to cause my PC to reboot Thanks!
Comment from : @Ben-ld1qi

I ran one of this for flashing a bios chip with the original 5V :o, I should mod mine!bris any danger of flashing the same bios chip again without changing the voltage to 3,3 ? I want to try a custom bios I made for supporting NVMe in a older motherboard!
Comment from : @abrahamalviarez5870

To finesse lifting a gull wing pin use a a sliver cut from as thin a stainless steel shim as you can find, heat the joint and slide the shim between pin and pad Solder won't adhere to SS which is also a relatively poor heat conductor and together will being thin and low mass will minimally cool the joint during operation Burnishing the cut edge of the shim will help prevent it from hanging up on the pin or land as it is slid between them
Comment from : @uhmgawa6533

Is there any ch341a programmer that is sold preconfigured to 33 volts? I do not have any soldering experience and would prefer to just buy one premodded
Comment from : @cemsengul16

Alternatively, you can solder 33V zener diodes between SPI data pins and Gnd pin of the zif socket , on the back side of the board The zener diode limited the peak voltage to 33V Everyone could not solder tiny SMD pins, so zif socket's pins much bigger and soldering too easy instead of SMD IC pinsbrYou need two zener diodes; between MOSI and GND, CLK and GND brI2C pins are open drain type and requires external pull-ups, you don't need the voltage limiting operation for this pins
Comment from : @ademgdk6573

Damnyou need to do a soldering 101 course lol Dreadful That solder is going to break off
Comment from : @wenzenuf221

followed your guide and confirmed the voltage across the data lines were 33v using the powerbankbrnow on usb port, if i plug it all the way in, it shows in the device manager, however there's no power led lit (red led) the voltage across the rail is still 329vbrusing the programmer, it says it cannot connect to the ch341a same with the neo programmer
Comment from : @normandetita2240

good information
Comment from : @badushashaik8429

Thanks for including your sources Too many people don't Much appreciated
Comment from : @christopherjackson2157

Hey friend I bricked my laptop trying to undervoltage I have a msi gs76 I can't even access bios @ all or windows Would you have any advice?
Comment from : @luckytiger3821

Suspect mine does the same but it flashed a bricked bios chip and brought a lappy back to life in under a hour of ownership so did the job 🤣🤗
Comment from : @haha_you_dead

I ordered this programmer, and today I have noticed that the chip is not the CH341A, it is the CH341B, can I know what the difference is or if they have the same problem as in this video?
Comment from : @supremohalolord1384