Apple A1398 emc 2876 randomly black screen and fan rise

[ktmmotocross]

Hello.
Have this A1398 emc 2876 that randomly goes to black screen and raising fan. I know this was problem of gpu or gpu voltage controller, but this one is without gpu.

Is there some known failure points on them or i just count on cold solder under cpu?

[piernov]

https://logi.wiki/index.php/A1398_Common_issues

[ktmmotocross]

checked but found only that FDS chips faded out.

for me this case looks like error from big tantal capacitors on old toshiba that badly filter voltage