My Pinbits ramp mod is suddenly not working. I'm not sure how to go about testing it at all. I'm not sure in the menu diagnostics what I can go into to check or force it to light up. I am getting not light at all suddenly and I'm not aware of any changes other than putting in some new playfield bulbs (machine wasn't on and the bulbs aren't close to the 2 blue modules under the playfield)..... Help!!

I purchased it with the ramps already in and fully working

I did check the connections from start to stop and I couldn't see anything that was loose..
how does one flash the firmware?

??????

Well I uploaded software from Pinbits...nothing worked... I couldn't even get the game to boot up. All of the GI bulbs come on and no DMD display.... No loose connections, nothing.

Went to check continuity on the main board and the F11 fuse (4amp) was out... replaced and now everything seems to be working again... not sure what the deal was... but these machines can drive a man up a wall. I think I spend more time fixing on them and modding them than actually playing them.

Should the F11 fuse be a 4amp slow or fast acting? I only had slow acting fuses on hand which look to be the same but there are no markings on the original fuses to note the difference....