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Creative A Speaker, burnt power supply in lightning. Thread starter Solder Guy Start date Sep 15, Solder Guy New Member Sep 15, The power supply of my Creative A speaker system got nuked in lightning. I guess the adapter is unable to supply enough current.

Creative A520 Speaker, burnt power supply in lightning

I am trying to repair the power supply but cannot figure out the values of the burnt parts. I can see two resistors and a zener diode as burnt: Please help me figure it out. Oh dear, dstasheet a pretty sight. I think your best hope is to find someone with the same model supply and get the values from that. There’s a good chance the IC is fried too: Can’t spot any datasheet for that IC in a quick search. I guess it means it can withstand high voltage but not sure.

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I also figured out the diode to be a 1N high speed one. Now just the resistors need trial and error. As it was mentioned, your best bet is to find someone who has the same unit. In the mean time, there is a hi-res picture of exact power supply happened to be posted on a Turkish forum! Some of the parts are pulled out but you might open it up in a separate browser or an editor for blow up, I think you can see the bandsby the way it is going to be more than the resistors faulty.


I can see a cr685t red blk 22ohms and the other is 4 7 something. Thanks a lot guys. I would have never thought about the Turkish forum. I think the diode was used to signal PWM and cr8653t its blown the whole unit shutdown. My current guess datashwet 4 burnt parts right to datasheeet Not sure but I think the picture was originally posted here; http: Why not build your own linear supply?

Solder Guy New Member May 25, The optocoupler has some lines on the edges. Does it look burnt? I checked with a new one and the diode readings are same.

That’s my last resort. I think the power requirement is 4. I have adapters till 3. Basically I wanted to learn about SMPS circuits after it blew up and it has helped a lot in that regard. I also tried to power it using 12V datashedt from my desktop power supply. It was able to supply the current but lot of static noise was there. I think I can put some combination of inductor and capacitor to filter it and then the speaker will work even better with it.

It will switch off when the computer goes to sleep. Umair Hussain New Member May 27, Can anyone please confirm these 4 encircled components?

The FET I believe has been mentioned already. Can someone please tell me the value of the resistor R4the diode D5 and the light blue capacitor. The link is broken. Use the ‘Upload a file’ button to upload the image to this site. Umair Hussain New Member May 28, Solder Guy New Member Jun 13, Also the copper in some speaker wires had black dust carbon?


I think the lightning damaged components on the amplifier too umar: Hello ladies and gentlemen.

I have the same home theaterbut my problem is that the motherboard dwtasheet is missing a component. This component has 9 contacts on the board. I need to know if someone could post the picture here that card so I can identify it and then search to try to find itbecause without knowing their identification can not.

It could also be the card scheme. Thank you very much. Solder Guy New Member Sep 20, Kindly post a picture giving the location of the missing IC. Most ICs on the amplifier board have large heat sinks on them so its not easy to point. Here are the photos of the controller board. I took the liberty to datasneet the missing component of the position.

This is an IC with 9 legs audio controller.

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The exact function of it I can not tell. Any news about the missing component of the identification of the main board? I appreciate if you can cooperate.

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