Wang model 452-0

From: Jerry R
Email: uhoh1@aol.com

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Hi, I have a Wang 452-0 calculator that used to belong to my father, who was a mathematician. It's been sitting in my basement for many years, and I know at one time it was in working condition. Now, when turned on, you can hear the fan going, but nothing shows on the display. When turned off, you can see a couple of digits light up momentarily. So I have two questions. First, any likely suspects as to what could be wrong with it? Second, what is something like this worth, in working and unworking condition? Thanks, -Jerry