I have had the same happen and have used drill bits, easy-out screw extractors, and plain old screws. All work when used with care and having a pair of small needle nose pliers is always good.
Broken banana plug and stuck in amplifier
Hi, seek your advise how to remove the broken banana plug which is half-broken when i pulled out the plug, it's rather hard to clamp as it leaves a little metal.
The binding post of amplifier (E280) is unable to unscrew fully and to be removed,
Appreciate if you have similar experience and how to remove the remaining banana plug out from amplifier .