Lexicon LX-7 problem

Hi all

i purchased the Amp about 3 months ago from a dealer here in Audiogon. It worked ok but after sitting in my bedroom for 2 months, I tried to turn it on last night, its enternal fan run really noisy and all 7 front lights turn purple. I did let the Amp stay on for several minutes but the fan still run and very noisy, the front lights never turn normal deep blue again.  Would anyone have any idea? Thanks so much for any idea!