MBP A1150 generates dim Magsafe LED and no backlight

This thing will actually chime consistently and zaps PRAM as expected if you hold down the power button.

Known working Magsafe MBP adapters will generate a dim green LED (and the battery has been removed). Sometimes they'll generate a bright amber LED, but there's no battery inserted. The laptop fails to charge a known working battery. The contacts look clean enough, but I'll still try some rubbing alcohol on the connector.

There's no backlight - I had a hard time viewing an image.

I'm thinking about replacing the left I/O board. What other MBP left side I/O boards can I use to replace this suspect board? I'm hoping I can use the one from the A1226.

Thanks for reading!