Wireless Mighty Mouse not scrolling down?!

Hello huxie:

Welcome to Apple discussions.

Clean the scroll ball thoroughly. Tour it upside down and run it "vigorously" on a piece of white paper or, better yet, a microfiber cloth.

If you wet the cloth, do NOT use chemicals and do NOT attempt to disassemble the mouse.

Barry

Awesome! Worked out great- I now have a functioning mouse! Thanks very much!

Hello h:

Running it vigorously upside down on a cloth or paper usually cleans the scroll wheel. There is no setting (that i am aware of) that would cause the problem.

You could do two more things (may or may not help):

1. Reset PRAM:
http://support.apple.com/kb/HT1379

2. Trash the BT preference file (com.apple.bluetooth.plist) and restart.

If none of that helps, I would suspect the mouse. If it is within the warranty period (one year), either call Applecare with a warranty issue or take it to an Apple store for a replacement (or fix).

Barry

Great help. Got the job fixed in 15 sec!
Just used plain sheet of paper form the printer that was on my desk.

Excellent!

Glad everything is OK now.

Best regards from across the sea and a continent to a place that I loved to visit (die Schweiz).

Barry

Another happy Mighty Mouse user (in this case from Munich Germany) says: Thanks so much!!!
My Mouse did not scroll up nor down anymore. Changed batteries and all, nothing helped. Than I read your reply and I rubbed it on a white sheet of paper for about 2 minutes. Now it works again like a charm!
Thanks again
Christian

Hello Christian:

Welcome to Apple discussions.

Glad my little suggestion helped!

Regards from the USA to Munchen (one of my favorite cities in Europe).

Barry

I was about to give up because I've already tried rubbing the scroll ball against a clean T-shirt and other things.

I've heard some recommendations to use a residue-free solvent to de-gum the scroll ball, but I didn't have any rubbing alcohol. My last ditch effort was to use Zippo lighter fluid - the kind for their wick lighters. I don't smoke, but I use the lighters for camping, and the fluid is handy as an acceptable substitute for solvent based cleaning fluids. They have a newer "synthetic formula" that has a considerably milder odor with almost no smell once it dries. It also doesn't irritate the skin like the previous formula would if a lighter leaked. I believe this is similar to a lot of magnetic head cleaning products out there; many are just petroleum-based solvents. Of course I was very careful (I disavow anyone who tries this and sets their house on fire). I placed a little bit on a napkin and rubbed gently. This was done far away from any source of fire and this type of fluid doesn't have heavy vapors that linger like gasoline fumes.

I tested it first on a less visible section of the mouse, and it didn't mar the finish; I didn't expect it would do anything to plastic, but I wanted to be sure first.

The white piece of paper trick works like a charm! I just got used to not using the scroll ball after it stopped working about a year ago. Not it works just like new!

Wow, this has been annoying me for some time, I thought I would just have to buy a new one as I was sure disassembling it would destroy it.

I've just tried Barry's white paper trick while reading this post, plugged it back in, and I can now scroll up and down the page fine! Result. I also used the corner of the piece of paper to clean around the plastic cut-out.

Sky

I'll add my $0.02, emphasis on the word, vigorously...

Barry, old mate, you are a wonderful brilliant incredible fantastic superlative Genius!!!!!!
Like another user here I'd simply given up on scrolling down even though scrolling up worked like it did on day 1.
I'd also tried everything including all types of cloth & minor surgery

BUT, the words 'white paper' and 'vigorously' did the trick!!!! I ran the wheel upside down quite vigorously in every direction for about 5 minutes. Bloody thing works like new! Again, youre a bloody Genius! I've decided to name my first born BARRY

She's not real happy about the idea mind you, but hey! I'm paying for her to go to college, she'll do what I say!

Great info. Worked for me also.