Re: 286 motherboard with 3 beeps - model HT12-16 rev. 1.21
Posted on 2024-03-24, 13:56
Try to replace or remove from the board those memory chips (V53C104BP70L). If will not help then check if there are any broken connections between the SIM memory slots and the XT12 controller. You can use any multimeter for this. Most likely (99% probability) that the problem is either with these …