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820-4924-a restart with in 10 to 15 second

Thread starter Rajnish
Start date Oct 10, 2018

R

Rajnish

New member

#1

All voltages present, including CPU
u1950 pin 3 - 3.3 pin 7 - 3.3

2informaticos

Administrator

Staff member

#2

Do you get USB activity?
Machine chimes?

J

JohnB8812

New member

#3

If it is restarting meaning bootlooping where the Apple comes up and then it shuts off and repeats, try a known good battery

R

Rajnish

New member

#4

USB no activity
bios change but no improvement

J

JohnB8812

New member

#5

Ok makes more sense no USB activity. Inspect closely corrosion around the SMC, U1950, and U1900?

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