Macbook Pro 15" - A1990 - Chime and keep restarting

[saisoni20]

Hi there,
I have a MacBook pro A1990 was water damaged. I cleaned and reflow damaged components now I have 20V and MacBook turning on but keep restarting after chime.
I have changed battery but still same problem.
Anyone can help me?

[mon2]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

Try a PRAM / SMC reset.

[saisoni20]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

tried but same problem

[mon2]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

Do you see the backlight? Apple boot logo?

Could the OS be corrupt?

Can you try to boot from an USB thumb drive?

[saisoni20]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

Yeah I do have apple logo chime and it restart again

[ugamazing]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

Try T2 restore; have seen some of these that boot-loop when T2 gets corrupted.

[Stephen]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

Have the same issue, did a T2 restore on one, no water damage. Keeps restarting won’t load unless booting into safe mode. Any ideas?

[javedharun]

Re: Macbook Pro 15" - A1990 - Chime and keep restarting

Any solution for this plzz report me