Samsung A51 (A515F) Stuck on logo/Auto restart solution FIX FULL GUIDE

Samsung A51 (A515F) Stuck on logo Hardware Repair
Samsung Galaxy A51 Stuck on Boot Logo Fixed
Samsung A51 Hang on Logo Repair. Stuck on boot Screen.
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Samsung A51 Hang and Restart Problem Solved
Samsung Galaxy A51 Auto Restart Problem Fixed!!!
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a51 fix logo,
a51 bootloop fix
samsung a51 fix
a51 lag fix
a51 hang on logo solution
samsung a51 hang on logo solution
samsung a51 hang on logo

[adilmouz]

الله يوفقك فيديو في المستوى حليت بيه مشكل هاتف A51 دائما لوح الجديد

[mcan]

Thanks for the heads up where the issue is. Here’s my version:

Have A51 on my desk for this same problem. Device pulls full amps when powered down and charging battery. Upon prompt to boot, device would go to Samsung “A51” logo and amp draw would drop to .38 amps on high powered USBC charger. No amp fluctuation at all. Solid .38 and solid logo that only goes away when battery dies off charger.

Saw your video, so i pulled the board and then removed the sticker/shield. Found two underfilled chips and one large chip without underfill. Reflowed the large chip with steady low heat (300 c) carefully avoiding the underfilled chips. (No solder balls).

Upon reassembly I now have boot! (Booted to pass screen).

My guess is this won’t be a permanent solution and reball at least will be necessary. Getting passcode from customer for data before I move forward.

Thanks for the tutorial and happy fixing!

[eizot]

thank you sir it works i dont know for how long but IT WORKS!

[SlovakiaDom]

I tried heating the side shown in the clip but it didnt work. the 2nd time i tried the other side. and the 3rd time the original side again. each time with a standard 300 degC heat gun at a greater distance than shown (maybe 15cm) for ~40 seconds each time. Leave to cool undisturbed for several minutes each time too.
Note: Remove ALL cameras from the motherboard and direct heat to the main covered shielded (Alu cap) areas on each side.
(i used spare loose heat gun nozzles to mask and protect the other PCB component areas whilst doing it.)
Finally i fitted it back together again and recharged the phone fully, then did the vol down + power button to restart then volume up with power button to reset the system cache in recovery menu, then reboot, all whilst connected to a laptop USB port. (initially it looked like it was still locked in the boot screen)
after a while i saw the 'UI apps optimising' message before a full restart.
I have managed to recover my files! Other people may want to perservere with the vol button options after the heating, plenty of tutorials on Youtube for that part)
THANKS SO MUCH EXPERT!!

[alorabowman]

Thank you, was able to get my phone to restart, didn't have to go get a new one

[AjayYadav-ynwt]

Hii sir same problem I am facing from my phone a51 what should I do plz say sir i had important data in that please say solution sir i beg your pardon😭😭

[qzy-SanTzxkW]

5:12 how? Mine has never been repaired and is unopened. Is it glue? Because it doesnt come off for me like in video. HELP!!!

[amaldhaouadi]

i have the same prob it didn't work for me it's still stuck rebooting maybe i didnt heat it enough. ps: i tried with the hair dryer

[sebmrz]

😭 Vous avez sauvé le téléphone de ma fille avec toutes ses photos... je vous remercie du fond du coeur. Merci pour votre travail exceptionnel. ❤

[Paakku]

A problem I have in addition to this it seems is that the phone registers as charging, but in reality the battery just drains as it is charging. All the way to 0%. Any solution for this?

[muhammadraza]

All fine,
Thank You,
, But why there is no sound, no explanation, , , , why ??

[FahimAhmed-vfmy]

I have same problem with A52 (4G Variant) would this work?

[armanswati]

Sir apki shop kidr hai smae yahi issue mra model ka sat ha same model

[amdalarmas]

Gracias buen hombre se merece un 5 estrellas me salvaste la informacion nuevo

[cookingmix]

Same problem with my Samsung A51 always auto restart .please help

[rgtv]

I follow your video but still stock until the logo only😢 what I need to do?

[hancoglu]

samsung a51 turns on, works for 1 minute, but keeps resetting, I installed software, it still didn't fix

[grazianygomes]

Quando isso acontece perde todas as confirmações do cell? Digo, arquivos fotos e tudo mais?

[nadjetmer]

سلام و الله يوفقك ياااااا رب عندي نفس المشكلة سؤال بس بالمرحلة التانية تع التسخين ممكن استعمل السشوار مجفف الشعر??? بليييييييييز جاوبنى

[trishamaedimaranan]

I bring my phone to the shop and they exactly do the same and it worked. When I got home, my phone won't start and keeps the logo stuck. What should I do?