Trying to Fix My Logitech Z333 2.1 Speakers (One Speaker is louder Than the Other) 

I'm having the same problem. So surprised others do too! I thought Logitech had good stuff

Same problem here: black output volume worked fine, blue output volume was very very low regardless of which speaker was attached. My problem was the potentiometer underneath the volume knob. It was not outputting the same resistance for both left and right speakers. At 8:52, you can see the white 7-pin clip coming from the volume knob/pot. The resistance between VOL_LOUT and GND and the resistance between VOL_ROUT and GND should be the same at any specific knob position. Seems they should scale between 0 and about 12-14 kOhm as the knob is turned from 0 to 100%. My VOL_LOUT maxed out at ~25 Ohm for 10-100% volume, whereas VOL_ROUT output the whole 12-14 kOhm range. I was able to fix it simply by blowing compressed air into and around the pot in the middle of the PCB at 30:21. Seems to have been weak contact in the pot or it's wearing out... Hopefully this helps someone.

I had no sound on right speaker. The problem was on the headphone jack. There is a switch inside the jack that de-activate the speakers, move it with a toothpick and problem fixed some contact cleaner may help too.

Mine doesn't give out any audio at all.. The problem is with the connectors in volume control pcb.. Logitech sucks!!

Im having the same issue right now.

I was going to try to fix some connection issues on my Z333 but seeing this video made me drop that idea. Not only do you have to take apart the entire sub to get out the little control board but the RCA connectors are like a full-on assembly? Probably not worth the time and effort for a $50 sound system...

i cleaned mine all the outputs and it miraculously fixed

they glued the connectors since lots of people were complaining there system stopped working and its due to the subwoofers vibrations that get sent out and moving the connectors out of the place

I had no sound in left speaker, the first thing is to try look is at the connector for the speaker that has no sound, squeeze the connector inwards so it makes harder contact with the output on the sub-woofer box's amplifier board, the connector is loose and making poor contact with the amplifier output connection. if that doesn't fix it than you must unscrew the amplifier board and check for loose capacitors, you must reflow the solder because the capacitor solder joint has broken loose and is making poor contact. mine is fixed now

I think I have figured it out. I had the same problem with my right speaker very quiet and the left normal volume. When I had only the right speaker plugged into the subwoofer I ended up bumping the 3.5mm jack that connects to the back of the computer. It suddenly got louder. I continued jiggling the jack and the volume changed up and down accordingly. So for mine, the wires in the PC jack must be damaged. Cheers

2023 Logitech still have this issue just bought a new speaker set and plugged it into the subwoofer and still one is louder then the other

I had a similar issue with my Logitech Z337, but it was only present when the volume was set approximately to a quarter or less. I took off the volume control knob (just pull it out, don't be afraid to use a bit more force) and sprayed a little amount of WD-40 into the potentiometer. Then I rotated it a few times for the oil to settle and the issue is gone now! Also, when I was turning the volume knob, the speakers were cracking, now this is fixed as well.

I had the same problem with my Z337, the issue was caused by the potentiometer in the volume wheel which was internally become dirty (also oxidized maybe). I solved the issue desoldering the potentiometer (with a desolderer and the soldererer with a copper desoldering braid), opening it and cleaning the internal circuit traces with alcohol, I also cleaned and bent a bit the internal brushes so they make better contact. It's not too difficult if you have some skills doing these type of things. In this way I also fixed the "scratch noises" problem that occurred when I rotated the knob, now it doesn't make any annoying sound. The potentiometer is called (I think it is its name?) B503 and it has 6 pins. I found similar ones on Aliexpress for a few bucks and I ordered them, if the problem occours again I'll try them

my problem is the right speaker is not working, there is no sound or anything. I dont know what to do with the right speaker

Does Logitech have a repair place somewhere? Can you get one fixed if it goes bad out of warranty? The price for them now is $99 on amazon. Maybe I could get my right channel to sound, cheaper by them fixing it rather than having to buy a whole new one to replace? Does anyone know where to get repaired?

Had exactly the same problem, i just hammered the right outport a bit. it seemed to fix the issue

I have the same speakers, when I opened it up I noticed the glue, and took some of it off. However my fix was to push in the black box that holds the audio jacks into the PCB. For some reason this was one of the only things that didn't have glue on mine, but yours did despite being the exact same model.

I have a problem, I need to shake and hit the base for them to turn on, what could it be?

The glue on the green board looks like somebody sneezed on it! Anyway, it's pretty frustrating that this video didn't tell me how to fix the issue, but at least I got to see inside my speakers. I probably won't try any of this because it's happened before and the left speaker (on mine) always comes back on again eventually, but I can't believe they make it so hard to dismantle, considering how often this problem seems to happen.

you tried your best but when i saw the glue was thinking they had a reason to be there.I think because of the vibration from the sound that might be an extra security step to make sure they don't get lose.but the 2.thought i had was it might be because they want to prevent someone takes it in apart.good that i know now for what to look for NOT to do.

i have a trust tytan 2.1 speaker set and i have a problem with the volume control thing that has 2 aux cables + 1 3.5 mm jack when i turn it to max volume it switches speakers so one becomes louder than the other

Change the capacitor behind the port. The 1000uF 16v

how about 1 jack with 2 speakers that are connected and only the right is working?

I've bought this 2.1 Speaker set as a christmass present. I would like to know, is if this problem had occured some time later of using it, or when it was brand new connected to PC and started acting weird?

my blue output doesnt work ata all on the subwoofer the speaker are fine tho

I'm having the same problem. Bought them 2.5 years ago.

I have the same issue with the Z337.

Hey today I came with the same problem.... Any help?

I guess I’ll just buy a replacement subwoofer on eBay, sounds like a good idea? They’re only 30$

im having the problem , when you adjust the volume i can hear that noise and its annoying

I had a similar problem, what i did I bought RCA plugs, cut the cable, put it into the new plug, and my sound went back to normal. edit: I cut the old plugs open andthe left one it seems that the white cable wasn't soldered to the plug properly, it was barelly scratching the place where it should be soldered. that's why new plugs helped.

mine has a crackling sound when i move the 3.5 mm cable. does anyone know of an easy way to fix it

maybe a dumb question but, is the big one supposed to give off sound as well? because mine has been very very soft.

Or you could get a 2 Male RCA 1 3,5mm Male cable and connect it in the back of the sub... just sayin...🤷‍♂️🤷‍♂️🤷‍♂️

I have a logitech Z337 and my sound stops at low volume after a few minutes I am so angry on logitech

Had the same problem, usually just putting the volume at max and then thouching the head of the 3.5mm plug with the tip of my finger repetidely did the trick, this time that was not enough Had to touch the pins on the back of the white conectors (why are they glued lol), specifically the one for VOL_ROUT seen in 8:54, which is the 3rd one from right to left seen in 10:34, fingered that little thing a couple of times, each time i touched it the sound changed in timber, until eventually it came back to normal

My speakers are fine my subwoofer doesn't work at all.. They glue the connectors so they can tell if you've tampered with it under warranty.

You need to make a come back Frazer!

How do I know if it’s happening

im not taking mine apart ive just turned my volume in the balance tab on windows for the right channel to 50% and gave up there lol

same exact problem i thought it was my speaker jack being damaged

My blue input doesn’t work, any advice? Both speakers work in black input but neither In the blue

my subwoofer isnt working :c

BTW; DONT TOUCH THE STUFF YOU SAID WAS GLUE! IT MIGHT BE ACID

My left one is ok. Right is not loud enough. I inverted the cables and determined is not the speakers. What a piece of shit.

I lose power in the R speaker because pcb afer 3 years.

i am having the axact same problem

good I watched if it worked at the end xd

Look at the bloody glue!

I have the same problem

i just slapped the fuckin subwoofer and it works :D

o.0 Why it Do diss?

You were no help at all

Last time I ever buy Logitech crap.

My right speaker was louder than my left, but I finally discovered what was wrong. Because of the position of my subwoofer, I decided to switch the connectors and then switch the position of the speakers. I didn't think there'd be anything wrong. Turns out connecting the right connectors to the right sockets solved the problem. Basically blue goes into blue. Black goes into black. Or else the volume imbalance problem occurs. This comment is only for those who made the same mistake as me.

the problem is logitech they fkin suck with those stuff brand new ls21 same problem lol