Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

KEF Cube 12 Active Subwoofer Power Supply Faulty

erkanderya

New Member
Hi friends.
I repair electronic boards, KEF Cube 12 Active Subwoofer Power Supply Defective on my desk right now..
Has anyone encountered this kind of failure?
1.Capacitors on the board have changed.
2.U503 (203D6 IC) Changed
3.U800 (RHG 1072a) Changed
4.Bridge diode replaced
5.there is no corrupt element visible from the outside

Thank you, friends

 

Attachments

  • Kef Cube 12 Power Supply 01.jpg
    Kef Cube 12 Power Supply 01.jpg
    324.5 KB · Views: 37
  • Kef Cube 12 Power Supply 02.jpeg
    Kef Cube 12 Power Supply 02.jpeg
    307.6 KB · Views: 37
  • Kef Cube 12 Power Supply.jpg
    Kef Cube 12 Power Supply.jpg
    274.4 KB · Views: 33
Last edited:
If there's no schematic, then it's probably a good idea to draw one out - U800 failing is probably a symptom rather than a cause, you need to find the actual reason for it's failure. Then there's the likelihood of other components being damaged by the failure, it's essential to find and replace every failed or damaged component, otherwise it's likely that components will fail again the instant you power it up.
 

Latest threads

New Articles From Microcontroller Tips

Back
Top