Small Speaker Horn Repair
The complaint of this small speaker horn was no sound and it was repaired by someone before.
This is a pretty straight forward repair. Just remove the screws and check on the diaphragm with your multi-meter set to Ohm range.
Remove the 3 screws and you can easily take out the diaphragm cover. The first thing I saw after opening it up was the wire that is attach to the diaphragm was damaged by the previous repairer. I wonder why he did not proceed to replace the diaphragm.
So I bought a new diaphragm and check on the Ohm reading first before fixing it. I’ve got 5.8 Ohm which mean it is good. A bad one will have zero Ohm.
Before the final installation I had to test the horn first with a 1.5 volt battery. It should make some sound. If no sound means there is still problem. I’m glad to hear some sound and I consider it fixed!
By the way, you can check out the video below for more information about horn diaphragm replacement:
This article was prepared for you by Suranga Bandara who owns an Electronics shop in Anuradapura, Sri Lanka.
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Note: You may check out his previous repair article in the below link: