Hi!
A recap won't fix the issue unless there has been major leakage but does not really affect the A1200 in this way. It maybe Gayle or simply clean up the expansion connector. Careful removing ROMS as you could damage the tracks under the ROM.
Good luck!
Steve
Not sure about that but every Amiga should be recapped, especially smd models like 600/1200.
My 1200 had floppy issues, it was caused by this.