Logitech z623 Power light blink

[RVXIL]

How can I fix it?

 

[Azghul0815]

Well, look like some broken elektronics.
How old?

If you dont know anything about repairing such stuff, buy something new

 

[Neodar]

Three possible issues:
1. Overheating
2. Unstable Power Connection
3. Electronic Failure of the System

Power down the Speakers, check all the Cables and the Power Connection.
If the Speakers are broken, buy some new BETTER Speakers.