I had scheduled myself to do pinball battery work this weekend so it was coincidental this topic came up ...
Replaced 27 AA Lithium batteries on Williams / Stern / Data East machines.
Then decided to look at Dialed In. For me, this turned out not to be a big deal at all. Having never done it, it took 10 minutes and the included opening up the pin as well as getting the new CR2032 out of the plastic. This isn't to say the battery replacement situation is good, but I didn't find it horrific.
There is, of course, specific instructions in the manual. But here's what I did...
1. Remove translite
2. Release and fold out the LCD
3. Remove the 4 screws holding the CPU case on
4. Power on DI
5. Using a little screw driver (like a jewelry one), push it between the clasp and the battery and then tilt the end up. Yes, be aware that video board right to the left has a spinning fan.
6. Battery pops out, lands on bottom of CPU case
7. Insert new battery. This took a little work because my hands are big and yes, there's a spinning video board fan right there
BTW, this was the original CR2032 and it read 2.89V when I took it out. JJP says below 3V can cause problems, so it probably getting close to time to replace. I suspect the motherboard is happy with it even a bit lower.
In case anyone doesn't know what the battery location looks like, here's a pic. Battery is close to the center of the pic.
IMG_0779 (resized).jpeg