Tom pid=63794 dateline=1549337581 said:
So, what is the primary cause of a (relatively) high treble reed not vibrating properly (not making any sound) at a low volume?
Tom,
Ive only ever owned two brand new accordions. One had been on display in the shop/store for a good while and had seen a bit of use. I bought it in person. The other one came by air freight from a little island called America.
It was a cheap little Hohner (not sure if it was you I shared a bit of banter about it) and it had two dodgy reeds.
At a very rough guess there may be some debris left in the inner workings of the accordion, and all it takes is a tiny particle of wood or metal to get lodged under the reed blade and the reed either refuses to sound unless you blast it with air, or it under performs like what is happening with yours.
On the other hand the reeds might just need played in and will eventually come good. If you can put up with it for a month or so the reeds might start to settle down. At this time of year changes in ambient temperature can cause issues, and the sort of temperatures youre having in the US, if they are occurring in your area, where the accordion came from, or the areas it passed through in transit, might be a big part of the issue.
I know nothing at all about all the science of the internal workings, and have only seen two DIY cures. The most basic one is to identify the sticky notes and repeatedly compress the bellows hard until the offending reeds free off a bit.
The other option involves taking the reed block out of the instrument and blowing through the offending reed(s) in an attempt to achieve the same result as above. The technical types will advise you against that in case you leave any moisture in the reed block, but if you consider a harmonica what would be your first thoughts if the reeds were sticky on it? Its a tough call, as even a top of the range harmonica is cheaper by a long way than a brand new accordion.
In my case I had to resort to the second option, but I only had partial success with one of the reeds, which is also slightly out of tune. For the type of instrument it is it isnt worth taking it to a repairer, as I ended up hardly ever playing it in any case.
The good news is Ive seen other posts on here where people have had the same issues, and Id be inclined just to play it for a while and see what happens. If youre anything like me, once those bellows pins come out its a bit of a lottery as to whats going to happen if I cant get everything to work properly.
TIP:- Youll see the guy pull out all the bellows pins and just chuck them in a dish. You should really put the same pin back in the same hole, according to what Ive read elsewhere.
Youll see from the YT comments that not everybody appreciates the video content or the background music. As there is nothing to hear instruction wise Id be inclined to douse the volume to just under zero. The word numpty translates as half-wit. At a guess the poster of the video realised it was going to be watched by non-English speakers, and I can assure you that a lot of these instruction videos are better if the person just says nothing and gets on with the job.