How to repair a doorbell ( one possible solution if doorbell does not ring )

Published: 27 March 2021
on channel: High Voltage Engineering by MG Niasar
242
9

We have a lot of rainy days in this country and my doorbell is not well water proof. After some time of use and due to high humidity the contacts of the switch gets oxidized and so the bell does not ring.
If you open the bell and open the cover of the switch (behave very gently otherwise it is very likely that you break the plastic cover of the switch), and use sand paper or a file to remove the black oxide layer which is formed on the contacts, you may be able to restore your switch.
only be careful not to bend the metal contacts far away from their original position, otherwise you will have hard time to get it to work. in this case i had to use some extra rubber to help the white plastic rod goes back to its original position after the bell is pushed.


A few days ago on 20 March it was Iranian new year. Iranian new year starts at the beginning of spring, so happy new year to all Iranian and other nationalities who celebrate it.
It was around 1 year ago that i started this channel. Within one year we have made 48 videos, gained nearly 250 subscribers, and more than 40000 views.
This is good news, i only personally asked maybe 10-15 people to subscribe in my channel, the rest all subscribed themselves (of course some of them knew me and when they saw me presenting the videos, they have subscribed). This shows that you can even start from ZERO.


Apart from financial setup, i also decide to compete with some random youtubers who have higher number of subscribers than me, the target is to get them.
First of those was "Carving Foam". he was 147 and i was around 100, i decided to compete with him. a while back i passed him. I got 200 and he was only 173.
the next target is Player CC. competition started when he had 400 subscribers and i had 200. Now he has 470 and i have 252. Let see when i can catch him/her.


Finance:
N=11, subs=252
Available budget (N):
252-100-11*(11+1)=20
Storage limit:
2^ln(252)=46,18


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