t61 dosent get power

[hansolo669]

so i have a t61
today i bought a power adaptor for it (universial)
it works and charges my hp laptop (so i know the charger works)
but when i plug it into the t61.....nothing, none of the lights light up.....and when i push the power button abslutly nothing happens.
iv opend it up and visialy inspected the mobo, and i cant see any signs of water damager or anything. the only place that looks a bit off is on the power plug (internal) where it looks corroded/worn/not right.
iv already spent quite a bit of time on this machine and rely would like it to work with minimal cost.
any how maby you guys can help?
thanks

[Harryc]

Do you have a multimeter? Measure from the center conductor to the outer shell at the end of the AC adapters cord. It must read 20vdc to power the T61.

[hansolo669]

the power adapter worked on my hp (the same voltage as the thinkpad)
i found some corrosion on a metal piece inside the laptop....unfortunaly this puppy needs a new mobo...which incidentaly i cant afford ...oh well.

now for anyone thats wondering, this was going to be a hackintosh so all this means is that im going to have to buy a real mac now

[rkawakami]

The voltage is not the only thing to be concerned about; you also have to verify that the polarity of the plug is correct.

ref: http://forum.thinkpads.com/viewtopic.ph ... 19#p521719