01-05-2010 08:21 AM - edited 01-07-2010 01:42 AM
Happy new year all!
I too found bad caps in both my rear speakers and was not surprised when I noticed what brand they were.
CapXon... <<< are the worst caps on the planet, I wish I had a penny for every one I've replaced on lots
I also replaced the 1000uF 35V cap next to the silver "U" shaped heatsink on the photo shown earlier in both speakers as they were bulging too.
Logitech have used these caps on the rf board too..I hope they last!!
If you have the skill, time and inclination replace them all with reputable brands.
01-08-2010 07:58 AM
Thanks for posting all these details, I have the same problem on both my rear speakers, and I will try to apply the repair method suggested. I just have a short question: is it better to replace the 10V 100uF capacitors like-for-like or is 16V 100uF a better option ? I don't know much about electronics, just wandered if 16V was like increasing the working range of the component (ie would be like overdesign compared to the original 10V, but that one we now know fails quite easily after a few months/years) or if it could affect performance in sound restitution ?
01-12-2010 02:56 PM
Thank you so much for the info in this forum. I had a rear speaker go out and I first had trouble getting the rear right speaker open and the instructions found earlier in the thread helped me through that obstacle. After checking the commonly faulty capacitors, I determined they were not the issue, but instead that the transformer on the power supply wafer was loose and had broken the connection with the PCB board.
I had to creatively splice some wire to the board to be able to more easily solder the connections back, as well as use some double-sided adhesive to ensure the transformer wouldn't pop loose again. My dog would regularly knock the speaker off my table by snagging her feet on the power cord and I'm sure this is what knocked the transformer loose.
Once the transformer was soldered and put back in its place, the blue LED shone once more. Thanks for all the great help found in this thread, I hope to help others troubleshoot their rear z-5450 speakers. Cheers!
01-14-2010 08:49 AM
I confirm that solution presented in this thread worked for me!!! Thank you very much. I was about to waste rear speakers and already put them into the garbage bin
I replaced 4 capacitors, 2 in each speaker. although I put 100mF 35v instead of 10v since 35v were the only ones I found and , I was told the more volts the better / They are slightly bigger though.
THANK YOU VERY MUCH! You just saved me a bunch of Euros
01-14-2010 10:40 AM
# Hi ,
# This is about only flashing red problem!!!
# You must remove the protective grid. Pull the rubber pegs. Unscrew 4 screws.
# With a knife to go under the silver plastic and pruned around. There's a
# lot of glue. Pull out your hair dryer or heat gun and heat up the sliver
# colored strip around the speaker assembly.
# This will melt the glue and the speaker assembly will come off relative easy
# when you grab at the silver strip.
# Inside you will see at the bottom a power supply and fixed to the back the
# wireless unit.
# I am not electrical engineer, but I fixed it! You need to buy two capacitors
# 100uF 10V or 100uF 16V, the solder and take care of polarization. That is all.
# I hope I helped you and you as happy as I am.
go to my gallery for photos,
01-16-2010 10:15 AM