This Emachines M6809 came in with the classic symptom of being able to hold the power cord tip in just the right angle/location to get it to power on. Assuming you have a known working power cord this is a great way to tell if you have the power plug problem.
The emachines M6809 is a six pin, 1.65mm dc jack that similar gateway mx7000 and W series laptops use.
When the emachines laptop was torn down to the motherboard the voltage pin had oxidized and almost looks slightly burnt. Like all repairs the dc jack is de-soldered and removed, then a new dc jack is soldered on.
After the input jack is replaced the laptop powers up!
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