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820-3115 SMC PM G2 EN pulsing
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Remove F7040 and check again mentioned voltages.
Also check diode mode to ground on all big coils.
Compare with good board, if available.
Also check diode mode to ground on all big coils.
Compare with good board, if available.
Looks like CPU issue.
VCCSA must appear before VCORE.
Resolder L7100 and remove R7974.
Test the board again; VCCSA should be stable.
VCCSA must appear before VCORE.
Resolder L7100 and remove R7974.
Test the board again; VCCSA should be stable.
Test starting in SMC bypass too.
You may have a problem with U7100, or adiacent components.
Post its basic voltages; pins 19, 20, 15.
Check diode mode to ground at L7100.
You may have a problem with U7100, or adiacent components.
Post its basic voltages; pins 19, 20, 15.
Check diode mode to ground at L7100.
I think you are saying some stupid things or you are wasting my time.
I already said that the VCCSAS0 voltage comes up, after which all voltages drop down and repeats
So what is the requirement behind checking u7100 pin 19,20 and15
"all other voltages after 3v3 s5 also just pulsing"
Including CPU VCORE?
If other voltages are stable disabling VCCSA and nothing wrong with its power supply, then bad CPU.
Including CPU VCORE?
If other voltages are stable disabling VCCSA and nothing wrong with its power supply, then bad CPU.
Really strange, VCCIO should appear before VCCSA.
Not even pulse at L7630?
The reaction after unscrewing part of heatsink, may denote broken solder, or trace.
Not even pulse at L7630?
The reaction after unscrewing part of heatsink, may denote broken solder, or trace.