[baloo]

I have a CarFax mileage discrepancy on a 2002 996 that I purchased earlier this year. HOWEVER, the mileage is almost exactly 100,000 miles off!
The original owner said it had 158K miles on it, when the dealer bought it (purportedly due to a blown headgasket). It then changed hands multiple times over the course of about 8 months, exchanging hands with car auction companies. About 2 months before I bought it, CarFax shows that the mileage magically changed to 62,xxx miles (not 162,xxx).

Because this odometer reading would be believable if it were 162,xxx, I now am thinking that the light behind the "1" in 162,xxx might have burned out or be otherwise non-functioning, whereby the "1" isn't working.

Is it possible for just one number to be out, and not the entire set of mileage numbers?

I think 2002 used LEDs, right?

Is there a way to check if this is a lighting problem?

Is there a way to DIY fix it, with some electrical soldering skills?

Thanks.