Chosen Solution
hope someone has an idea;-/ i bought t61 which wouldnt do more than show powerlight ,battery charging and a Z on the led row it was one with the invidia death chip I figured (1489)so purchased a board that was listed as alternative lenovo used with intel chip (1487) just got it replaced and powered up to find? exact same problem! bills mounting but i would like to get the darn thing working fan comes on cant hear much in the way of drive activity… and when i pressed the vantage button i did briefly see the littl house symbols 2 of them snuck up on it again and got the house symbols very briefly before they departed again without hitting the vantage button
@overit since you’ve already replaced the motherboard, the only things left are the display cable and the LCD. Connect an external monitor and see if that shows anything.