We have investigated the nature of the energy source of 36 LINERs with Chandra X-ray observations selected from the catalogue by Carrillo et al. (1999). In most galaxies a nuclear compact source has been detected in the hard band (2-8 KeV). However they show a rather irregular morphology embedded in diffuse X-ray emission for lower energies (0.3-2 KeV). In this work we report the spectral analysis of the nuclear source. Color-color diagrams allow us to determine the dominant mechanism in them. Synthetic colors have been computed for a power-law , thermal emission and a combination of both. The results suggest a non thermal nature in most of the LINER galaxies observed.