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Louie
Louie, Technician
Category: Consumer Electronics
Satisfied Customers: 12458
Experience:  25+ yrs. experience in the field and 5+ yrs. online, down to component level.
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My Panasonic KP 77n pencil sharpener, that I love, has

Customer Question

My Panasonic KP 77n pencil sharpener, that I love, has stopeed working. It hums but doesn't sharpen any longer.
JA: What's the make/model of your device? How old is it?
Customer: Very old. Panasonic KP-77n
JA: How long has this been going on? What troubleshooting have you tried?
Customer: It just stopped sharpening a few days ago. It hums but the mechanism doesn't turn.
JA: Anything else you want the electronics expert to know before I connect you?
Customer: Just that this is the best pencil sharpener I have had in my 12 years of teaching elementary school.
Submitted: 9 months ago.
Category: Consumer Electronics
Expert:  Louie replied 9 months ago.

Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, the described symptom almost always is an internal hardware issue.

Are you then considering a DIY (do-it-yourself) repair approach?

Or more importantly, would you be comfortable working on the inside electricals and mechanism?

Customer: replied 9 months ago.
I am considering a do it yourself
Customer: replied 9 months ago.
I am a school teacher and have students - I cannot talk to you on the phone.
Expert:  Louie replied 9 months ago.

Great on the DIY!

And thank you for your kind understanding of automated systems / machine generated ads and offers.

Still, with the unit unplugged...

Can you please remove the top cover? There would be 4 screws at the bottom corners holding it. The front plate/cover can also be removed.

Then please post back with clear pictures of the inside mechanism and circuitry.

Click HERE.

Customer: replied 9 months ago.
I guess I picked a bad time to get help. I must be with my student now.
Expert:  Louie replied 9 months ago.

I understand.

Post back when conveniently able.

Customer: replied 9 months ago.
I fixed it!
Expert:  Louie replied 9 months ago.

Great! Good to hear that the issue has been resolved, congratulations.