Broken banana plug and stuck in amplifier

You can try these,

https://www.harborfreight.com/snap-ring-pliers-with-interchangeable-heads-63845.html?utm_source=google&utm_medium=cpc&utm_campaign=12169518939&campaignid=12169518939&utm_content=114845751017&adsetid=114845751017&product=63845&store=293&gclid=CjwKCAjwsvujBhAXEiwA_UXnAJS5IegBb6LJGu3tPkEYlOOhA_ELy4aTHY9bBvcaQzCVBOwJGddpkBoCFKoQAvD_BwE

Where are you?  Any local mechanically minded fellow can remove it.

Jerry

Use 1 side of needle nose pliers or a round file.  Stick it in the center and try to pull it out by friction.

I agree that a small round rat tail file should have the traction to do the job.

blowtorch and arc welder 

Or get a pick set, quite handy to have around. That is if the suggestion @jjss49 recommended fails to work out.  

https://www.jbtools.com/ullman-devices-9-75-in-hook-and-pick-set-with-cushion-grip-8-piece/?wi=off&gclid=CjwKCAjwsvujBhAXEiwA_UXnAO--MDSoM2cUzqGrPd0Y4iBMrSez4NAmhEn2CUwYtrbiL7IM6mn7FRoCdbUQAvD_BwE

A wood screw should be able to engage the inside of the broken banana plug, then use pliers to remove it.

That is a tough one.  Every situation is different and depending on how/why the banana plug broke off, it may be slightly wedged in the socket of the binding post. 

It seems the easiest solution would be to unscrew the knob on the binding post, if that is possible.  Next would be to use a small tool to loosen and free the broken banana plug.  Even if you cannot grab the broken piece, try using a small tool to turn or move it a little, and then try turning the amplifier on its back so the opening in the binding post faces down and maybe gravity will help it fall out. 

The plastic posts on the E280 are mounted on a small circuit board so if you cannot pull out the broken banana plug and cannot unscrew the knob to the binding post, then the worst case would be to replace the binding post assembly, which appears to be attached by a quick connector and a single ground wire as shown here.

take the cover off and push it out with something

not rubbing salt in the wound and hope you get it out soon.  It shouldn't be hard to get out with proper tools.  I haven't made any recommendations because I don't know your skill level and tool inventory.

I want to point out that these inferior multipiece banana plags significantly affect sound (negatively) and eventually fail.  This is what drives people to lugs.  I like BFA style banana plugs.  One piece and great electrical connection  (again, avoid the multipiece designs).

Jerry

Second the idea of using a screw.  Insert and hand tight (just snug), want to embed the threads in the broken banana plug, but not get expansion that tightens everything inside, then use some pliers to gently pull on the screw.

One other possibly is a set of dental tools which can be found at at most pharmacies.Weird shaped picks might be able to hook it right out.

I'd unscrew the binding post nuts as far as possible, and try to pry/push it out through the hole in the side with a small punch or a big needle or something.  If you get it up a little bit, you should be able to screw the nut back down and get at it with some pliers.

are you trying to save the plug or the amp?

@jtcf has the answer. I have a set of dental tools in my tool box. I have used them multiple times with great success. I found mine at harbor freight a few years ago.

The rat tail file will do the job for sure.

Unplug it before you do anything.

@auronthas 

I have a couple of different sets of dental tools that I use for such things. Several of the tools have different size and angled points to get into small spots. You can get a cheap set at Harbor freight to start with.

All the best.

Any chance you can insert a drill bit that is smaller than the piece you are trying to remove? Wedge it in there and spray a small amount of WD40 to reduce any friction, then using pliers turn the bit to a point of engaging the banana piece the pull on the drill bit. If any movement is witnessed then repeat the process except the WD40 and it should work out a little at a time. 
if you use the rat tail file make sure to insert the tang in as the file is designed to cut on the push stroke and won’t engage the broken piece as you pull.

good luck

There are small special wire locksmith use to pull out broken keys in locks. Can probably find them on Amazon. They have one way teeth to grab the stick piece. 

That just happen to me! I used a drill ( very carefully)with the correct size drill bit and Bob your uncle

Many thanks for all your suggestions and safety precaution.

I managed to use tweezer to slowly and hold tight on the tip of tweezer to pull out gently without damaging the terminal (the broken banana plug tip was split in loose, so use tweezer to grab the short piece and pull.  (The tweezer is with anti-static tip, used to pick screw from PCBs) 

From the bad experience of banana plugs, I would use spades type speaker cable instead next time.

Your 400 (and above) series Dyson should have included a BBPE (Broken Banana Plug Extractor) tool.  Just connect the accessory, hit the power button and suck it right out.

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.