Von Hotpoint 2.1 subwoofer

[sarry86]

Hello friends, how are you doing? I have a 2.1 music system that makes scratching sound when I power it up, but after like 2 minutes it comes back to normal, after some minutes of playing musics, its Bluetooth hang and I have to switch it off then on again for it to work. I have checked all the caps none has a problem, please help me out

[stj]

Re: Von Hotpoint 2.1 subwoofer

i would start with replacing those 1n4007 1a diodes with a 4a bridge rectifier!!!

[eccerr0r]

Re: Von Hotpoint 2.1 subwoofer

"Patent products, counterfeit will investigate"

[Per Hansson]

Re: Von Hotpoint 2.1 subwoofer

I have checked all the caps none has a problem, please help me out

Checked the caps with what exactly?


The board is basically destroyed here, take a look on the bottom, I guess the solder is melted and you have a bad connection:


As stj said replacing this with a proper rated bridge rectifier would be one way to go.
Another would be to throw it in the trash where it belongs:
Whenever I see a silly fuse like that I just know the manufacturer is trying to burn my house down!

[sarry86]

Re: Von Hotpoint 2.1 subwoofer

i would start with replacing those 1n4007 1a diodes with a 4a bridge rectifier!!!

I did, all okay now thanks 🙂

[sarry86]

Re: Von Hotpoint 2.1 subwoofer

Checked the caps with what exactly?


The board is basically destroyed here, take a look on the bottom, I guess the solder is melted and you have a bad connection:


As stj said replacing this with a proper rated bridge rectifier would be one way to go.
Another would be to throw it in the trash where it belongs:
Whenever I see a silly fuse like that I just know the manufacturer is trying to burn my house down!

Bro, in our developing countries, these types of gadgets are all we can afford. Please don't hurt my feelings 😢

[sarry86]

Re: Von Hotpoint 2.1 subwoofer

"Patent products, counterfeit will investigate"

Chong ching things 😁

[Per Hansson]

Re: Von Hotpoint 2.1 subwoofer

Bro, in our developing countries, these types of gadgets are all we can afford. Please don't hurt my feelings 😢

That's not at all what I meant.
The device would not have been more expensive to design correctly: Use a fuse with the proper distance/length.
And place the diodes higher off the board with proper spacing, they come with long legs from the factory for a reason...
The fact that these companies in China makes such rookie mistakes even when they save no money by doing so just shows that they don't know how to design a safe circuit.
Having your house burn down is no fun no matter where in the world you live!