Quoted from pinballjah:
Here are some photos of the flipper board. Any noticable issues? Thanks for the help.[quoted image][quoted image][quoted image][quoted image][quoted image]
When you upload, change the dropdown to "original size, no rescaling" so it doesn't shrink the picture when it's uploaded. What's here is too small. Cold solder cracks are fine and hard to see at the size available with these shrunk pictures.
That said, these seem like trouble spots:
Two diodes related to the upper left flipper (D4, D5)
A small diode related to the lower left flipper (D6)
I don't see anything related to the lower right, except maybe the 12th pin on CN2, but I'm not sure if that connects to the right flipper.
Anyway, I bet just re-flowing these points would get your board mostly or fully operational. No time like the present to learn. As long as you get a temperature controlled soldering iron ($100 amazon.com link » ) and some good solder, it's hard to mess up re-flowing solder as long as you remember NEVER TO FORCE IT. If the old solder isn't melting, add some new solder and don't leave the iron on the bad for more than a couple seconds.
Youtube video on how to reflow solder:
That guy has way too big of a tip on his iron for the work he's doing, but overall in the ballpark of the information you need. You can likely do this repair yourself, and you'll learn a new skill in the process!