digital dash problems help please

[GMV6TURBOPOWER]

i have a car i am parting out and i was told the digital dash was working ?it is no longer working i would like to get it working before i sell it.any advice?i checked the fuses. another option i have is another car i have also has a working digital dash i could swap them but prefer to try to get it working in the car it is already in.thanks for the help james

 

[wildcard]

Do all of the digits still come on when you start the car or is it just the speedometer that isn't working? I recently had a problem with mine so I might be able to help if I knew a little more about your problem.

 

[GMV6TURBOPOWER]

nothing at all lights up.

 

[Dewey]

Most likely the power supply is dead. At least that's what happened to mine. I had to send it off to Casper's. I got the speedo upgrade as well and it cost $200.