Got a Data East Star Wars 1992 from Great American Pinball as shopped with new LEDs and no other mods less than a month ago. Had them come out to fix several things, but they didn't seem too interested in recognizing that anything had to be fixed with 2 issues I raised. I'm going to keep them in separate threads to avoid cross-troubleshooting.
I noticed a vibration and "boing/buzzing" noise a few weeks ago that started out like the sound of a phone vibrating but has progressively been getting worse when I let go of the flippers. When I opened the door, I can clearly hear that it is coming from the spring. Now, I've noticed that it happens if I'm holding onto the flippers.
The tech who came out said the spring looks in great shape and nothing is wrong with the coil or connections. He said I can probably hear it b/c my volume was low. I'm sure if I pump up the volume, it would drown out the spring noise, but it has been getting worse. I can feel the vibration more as well which has nothing to do with volume.
Any thoughts or insights?