Question about Logitech Z-5450 Computer Speakers
I have recently moved house. All the speakers used to work fine. Now the rear right has a flashing red light and no sound. The control unit has a flashing green light corresponding to the "link right". I do have a wireless modem and landline phone but I have switched them off with no success. I have also tried using a cocktail stick to reset the speaker and the control unit again with no luck. I have tired powering down the control unit and the mac but again no good. I tried plugging the rear right speaker in in another room - again the flashing red light remains...any ideas?
Hope you can help, Paul
@MaverikMS200 (Solution #8):
How to open the speakers:
-remove cover and all the rubber sleeves that are left behind
-unscrew all 4 screws
The next part is tricky and is where a lot of people get stuck, the case is next to screws being held together with hot glue. Try this:
-use a heatgun or furnice (in my case) to heat up the silver ring around the speaker. Use an ovenmitt to pull the silver ring away from the black casing. Repeat heating and pulling several times to avoid melting/burning the speaker. Don't pull/yank to hard if it doens't want to come loose. The wires to the actual speaker are very short and you will most likely break them screwing you over more with additional soldering work.
Identify the capacitors that are bad and replace them.
The small ones far left are most likely the problem. But be sure to check the larger ones close right, one was also bad in my case. Make sure you buy replacement capacitors from a good brand and don't worry if you can only get capacitors that are rated for higer voltage (lower is bad tho).
Posted on Apr 20, 2010
One of my speakers had the flashing red light, the other would connect for a few minutes and disconnect.
I opened up the speaker with the flashing light and replaced the two 100uf 10v capacitors on the power supply board and they both now work perfectly and stay connected.
Note that the 100uf 10v capacitors looked fine, they had no swelling or discoloration. I replaced them with 10uf 16v capacitors that were 10c each.
Posted on Jan 14, 2011
Ive also the same problem tried everything u posted above alrdy and was looking the internet for solutions but nothing...
Maybe we all should just boycot logitech in the future thats the best solution i think.
Posted on Jul 31, 2009
I also have the same problem. It used to work fine and nothing has changed so there is no new interference. The reset for pairing in the manual does not work.
Sounds to me like this is defect in this model. Likely why they don't seel wireless speakers anymore.
Posted on Aug 21, 2008
Check out the troubleshooting tips on the PDF file at
(sorry for the long link). Flashing red indicates data loss.
Posted on Aug 07, 2008
Thanks a lot, this solution works fine for my.
Posted on Jun 29, 2010
I'm in the same bout - so frustrating!!
Posted on Sep 21, 2008
How do you opened the boxes ? I screwed out all the 4 screws in the front but didn´t work
Posted on Mar 18, 2010
To Rudolfjan - having opened it up, there are 2 circuit boards - no loose components at all - I can't see any 100uF 10v condensers (although there's several you can't see well enough to read what they are) but, even if you could, you'd need to be an expert at electronics to know which components had failed and then to replace them; which ones did you replace and how? MaveriKMS200 - I wouldn't bother if I was you! but, to get the front off, insert a flat-blade screwdriver in several places all the way round between silver collar and black plastic body and twist it gently, ease off a bit at a time - it's glued on with something like silicone sealant. Personally, I'd say best bet is throw it all away and buy new - I've had mine for about 5 years and it's never been as good as older hifi quality kit (but it is more compact and the wireless speakers are really useful - until they stop working!!). Best of luck!¬
Posted on Apr 05, 2010
Hello, I have the same problem :
- Control center = Green Flashing
- Rear Speakers = Red Flashing (for the 2 of them)
Pressing Reset on first Control then Rear, .... nothing is changing
Trying all this with the 2 speakers and in differents place, including 10 cm from the center.
Logitech doen't said anything about this. I Stuck and this is very frustrating. Sending back all this stuff to have vendors fix it will be a really pain.
I feel like it is the control center that does have a trouble.
Any help on this will be very very welcome
Posted on Oct 26, 2008
The link no longer works is there an alternative please.
Posted on Aug 11, 2008
Unfortunately I have the same problem. As an electronic engineer I suspect that the power supply part of the unit is damaged. I opened up the module (don' t try it, its a little bit tricky since there is a type of glue around the silver bezel, after you remove the 4 screws from the front holes) and did some quick static measurements with a multimeter, so far no luck. Since I am still in warranty I will try to replace the item. Hint: protect your electronic equipment with ups or surge protection devices.
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
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