Two Way Speaker System With No Sound Repaired
A friend of mine at church brought this two way sound system for repair. He works in the city of Jericho which is about one hour drive from my workshop. He is having electrical problems the whole time. Last week, a fridge, power regulator and this two way speaker system were damaged because of this power issues at that location.
It is an old two way speaker system but very nice one.
When I powered it on and added a sound source to it, there was not sound coming out of the speakers.
I took it apart and the first thing I checked were the speakers inside the housing. The big speaker checked fine but the inside tweeter speaker was found faulty. (The tiny speaker you see in the photo is irrelevant to the case).
The big transformer was working fine but I found four faulty components on that board. The two 5 amp fuses were found open and two diodes were shorted as well.
Part number of the two diodes is 1N4148 which I have plenty of in my shop.
I replaced both diodes and I powered on the speakers but sad to see there was no sound.
The reason there was no sound because I forgot to plug in the speaker to the system but the moment I did that, the sound came out loud and clear. Sometimes I get distracted so easily that it almost caused me another hour of finding out the fault. LOL.
I could not find a replacement for the faulty tweeter speaker (I did not even try to) because the customer liked the sound the way it was after adjusting the equalizer on that system.
This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.
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Note: You can check his previous repair articles in the link below: