Perkin Elmer 2400 GeneAmp PCR System 24-Well Thermal Cycler N8030001.

It powers on, but I have no idea how to use it so selling it AS IS!!  I don't see anything on the screen when I turn it on even though I can hear it power on.  Please see pictures for condition (needs cleaning) and I will try to answer any questions.

Thanks!!

Model: GeneAmp PCR System 2400
Serial: 803N6121919