MagSafe Light Orange But No Battery Connected


hello,

first post on site, info guys.

have clients 15" macbook pro mid 2012 a1398 in repair.

macbook turn on intermittently, times not turning on when pressing power button. have disconnect battery , reconnect in order turn on again. macbook full of dust , clogged up, suspected overheating may have caused happen.

client has come macbook not turning on @ all, disconnecting battery doesn't work, smc doesn't work, shorting power pads on logic board doesn't work , weirdest thing magsage charger turns orange if charging battery when battery connector has been disconnected. first time have seen this.

wondering if guys can shed light on it.

it's either logic board/gpu isse think.

in advance.
 



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