I'm just batting out here.

So I've got two Pachislo I picked up, I was told one had burnt out light bulbs. Well it turns out both do, and they're not burnt out they're just gone. So I've been trying to get replacements for them. My first attempt they fit and worked, but they got hot enough to burn the heck out of you in seconds. My next bulbs didn't fit, my newest ones came in this morning and worked great for about 30 seconds then burnt out.

Does anyone know where to get the right bulbs?