How to Repair a Logitech Z506 Speakers Main Power Supply Board

[@T3HR3PP4]

A few years ago, my rear left speaker stopped working. I did some test and the speaker itself was just fine but that rear left signal was not being sent. i opened up the woofer a few times and couldn't fix that issue. Last year, the speakers stopped all together and the woofer generated a constant hiss with a regular blip. I opened the control unit and couldn't find a fault. I started planning to get a new surround sound system or maybe re-use the speaker for the Z506 for something else. I ordered the power supply board as a last ditch attempt but was planning for a replacement (the Pyle PFA560BT was mighty appealing or maybe even a 2.1 bluetooth board from Ebay). Yesterday, I got the power supply board and installed it using your video. Results? The system is as good as new! Even the rear left channel is now working. This was a great video and it saved me from throwing away or scrapping my system.

[@walknpich2]

Thank you for your video. My speakers stopped working four months ago and I was trying to figure out how to fix them. I was able to find the power supply in eBay. Now I have my surround sound system back.

[@paulopereira-rb4pn]

you can use any dc 12v transformer with at least 4a to 5a fixed that way no cost.....

[@Aedrothica]

Thank you this solved my issue and gave my pc sound system a new life!

[@clark85]

tytytyty for this vid I just ran into this same prob where the sound goes out at higher levels but lower works fine, thanks again!

[@dynamo4543]

would the power supply cause an issue with the audio to constantly skip or would that be the circuit board for the plug ins?

[@Sinalsa]

What is the dc output of the power supply?

[@Scottehness]

Thanks for showing this! It looks super easy! The website says the board is back ordered though. Is there anywhere else I can order this part? Right now my speakers will work fine on low until I turn up the volume. Then it acts like the the speakers are restarting over and over again.

[@SantezK]

i got the same problem. Did you fix it?

[@ThinkerOnTheBus]

I have had the same problem, and unable to order the board. I replaced the Z506 system with the Z606 system, and I am not satisfied with the sound quality. If you ever managed to bring your speakers back to life, how did you do it? If it was merely replacing the board, where did you find the replacement board??

[@Scottehness]

@@ThinkerOnTheBus I ended up buying a new set up speakers. This set is just in a box gathering dust lol

[@escapethematrix5379]

@@ThinkerOnTheBus you can change power supply. The board is for power supply. You can replace with 12v _15 v, 5 A. IT WILL work. Mine was dead but electronics repair man replace power supply with transformer diode etc 12v, it is working but at max volume it creates disturbances. Still working well upto 70-80 % of total output

[@escapethematrix5379]

@@ThinkerOnTheBus I thing power required was 15v something n 4-5 amperes

[@juwellzsantano8312]

I just followed instructions from this video to fix mine and it worked but then 2 minutes in at loud volumes the power fades in and out. I tested at a lower volume and it works great! But full volume is what I usually use these surround speakers for. Can you provide any tips on why this would be happening?

[@ThinkerOnTheBus]

My speakers are exhibiting the same behavior, where the play just fine at real low volumes, but once you crank up the decibels, then the speakers react as if they can no longer handle the same higher volumes they did previously, causing them to repeatedly cut out momentarily. If you happen to determine the cause of the problem and/or discover a solution on how to fix it, then please let me know, and I will do the same for you. However, reading through some of the posted comments here, it appears that some people have resolved our problem by installing a new power supply. You have done that, but there is a chance that the power supply you installed, although brand new, might be bad.

[@Mazza666]

Would be nice to know how to test the whole board. I have a z623 that has subwoofer problems. I would like to diagnose the problem to see if I can repair myself

[@icktzar]

Hi bro, where can I find the conections for that subwoofer. I bouth one receltly (only the subwoofer), and I want to use it as amplifier, but I don't know neither find how are the conections, mainly those of the front right

[@T3HR3PP4]

Thank you for this.

[@ScottDieken]

my base knob is not working on parts of the dial and one of my speaker outputs is out. i checked that output with another speaker so i know its the output. will your recomended procedure help

[@DiantoMusic]

Bro, can you help me? I have a problem with the subwoofer, it has distorsion at low volume. What can be the problem? Sorry for my bad english, i really need help.

[@llengford]

following

[@alexandro3385]

Muito obrigado. O meu aparelho está oscilando o volume, e acredito que seja a fonte de alimentação.

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing

[@Pulpswo]

I wonder if this is what I need to do...

[@marciosilvacutrim7062]

Hello, My main speaker doesn't turn on anymore. Does this process solve the problem? Thank you

[@lh536]

I have exactly the same problem... did you found the problem?

[@RobinOnTour]

​@@lh536 i have the same problem? what to do? :)

[@lh536]

@@RobinOnTour still the same... I don't know what to do...any idea?

[@lucasborotho3608]

I'm experiencing the same problem, I don't know what to do anymore

[@mackybolena7070]

sir what is output voltage of power supply of z506

[@TheDottedQuad]

I don't know what it's supposed to be, but I can tell you that I measured 21.6V on my possibly bad Z506 power supply.

[@msahin3]

17v straight

[@mackybolena7070]

tnk u guys 😁😁

[@marlonviray8857]

12v sir

[@escapethematrix5379]

@@marlonviray8857 around 15V. On 12 it is playing safe but on increasing volume it disturbs.

[@goran3149]

If I didn't get sound from the other small speakers would this help me....

[@davidbirchall465]

Where can I buy spare speakers for the volume speaker

[@K2edg]

Did you have any symptoms or did the board just fail? I have a weird fault with mine, it work fine and sounds good etc but if i shut down my Pc but leave the speakers on for more than 10-15min the speaker power light goes dim, then if i reboot my PC the speakers are not working almost like a lack of power...... if i turn the Speakers on and off via the power button next to the volume control they will power back up and the light becomes bright again. I was thinking this could be my Power board but tbh struggling to diagnose it.

[@thankarezos]

I have the same speakers and they broke down. Can we contact to help me identify the problem?

[@creativohugo]

mine started making a little sound every so often when nothing was playing on them, today I noticed the music and audio from my pc stopped playing every so often as if I was turning the speakers on and off, the strangest part is that the switch stays on all the time regardless of this, I hope replacing the board solves the issue.

[@sertcorecec957]

could you make it?

[@creativohugo]

@@sertcorecec957 make what?

[@seankendle8471]

@@creativohugo fix it

[@jrworsham8270]

Did that fix the distortion in the bass speaker

[@voguester]

What if it's not the sub woofer but the actual main power speaker control? Did you have a step by step guide video?

[@RobinOnTour]

i have the same problem? what to do? :)

[@msahin3]

the main power speaker control is attached to the powersupply within the subwoofer. your powersupply is most likely dead you can use a 16v-19v laptop adaptor instead

[@Quentin-FR]

@@msahin3 How to do this ?

[@msahin3]

@@Quentin-FR there are a lot of vids on youtube search for it

[@escapethematrix5379]

@@Quentin-FR you tube video available or go to electronic repair shop near you. He will fix it, I did it.

[@alscott]

DOES / HAS anyone out there has a problem where the main (big) multi-pin plug into the Sub has a bad connection - causes the little speakers to not operate well and crackles/pops etc. Any help would be AWESOME! Cheers from New Zealand :)

[@DiegoSynth]

yes, plus yesterday my whole unit went off forever. All the connections are inside the subwoofer, you need to unscrew the back panel (where you plug all the speakers) and take it out (carefully as the cables are stupidly tight). Then check the board and see if there is nothing broken: in my case I found broken pads. If that is the case, you could try bridging them with a soldering iron (search in KZbin how to fix broken pads in pcb). In my case the subwoofer board is in such a bad state (corrosion has eaten the screws, I cannot even remove them plus overheating?! has deteriorated many components) that I think it's time to move on (I had it for 10 years across 2 countries, hence the corrosion I guess). In your case, check the spot in the board where the big dsub-9 is soldered to. Maybe you find some messed up stuff there. Good luck!

[@nuckenfutz9983]

My Z506 started cutting out under heavy load. Later in time, I took out the power supply and noticed two 680uf 25v caps bulging. Replaced those caps, and back to working as normal. Funny enough, these speakers failing on me lead me to drop $4K on a real sound system and I've never looked back. FYI, the Z506's subwoofer is a joke lawl

[@ydros69]

Hi!mi button led not open,ant not working mi speaker,any idea for fix?thx

[@pepe1415]

where did you buy the new power supply board? I couln't find get a new one

[@LoneWolfReviews]

Link in description

[@KTHKUHNKK]

@@LoneWolfReviews Nice video I just subscribed. I have those exact speakers but I was hoping you would show how to take off the panel with all the inputs on it. On the back side you know what I'm saying. Keith

[@angelatosk]

Hi, great video! Could you send me the link of power supply cause it's not showing up in the video?

[@LoneWolfReviews]

www.hdetron.com/z506-power-supply-board.html

[@angelatosk]

@@LoneWolfReviews Thanks a lot!!

[@germangr169]

What is the size of the subwoofer?

[@hollywoodcars007]

Are you going to post the link information for the power supply? Where were you able to find it? Some of us out here still have dead speakers. Could you help out please?

[@LoneWolfReviews]

Im going to try my best to find it. Sorry that i couldent find it before.

[@LoneWolfReviews]

www.hdetron.com/z506-power-supply-board.html

[@gracekouvali6903]

I only have the center speaker connector working, rest of the speakers not working

[@nicolasgramajo45]

Cuantos ohm es el subwoofer

[@escapethematrix5379]

It could be 4-8. Sometime less or more as different companies changes it like 3.6, 6 etc. Mostly uses 4or 8 ohms

[@YaroslavSolodky]

Which power board did you replace the original with? Please write or link to this board?

[@LoneWolfReviews]

Link in description

[@YaroslavSolodky]

@@LoneWolfReviews so you put the non-original, and in the description original

[@robertdenisjustavino210]

Hello! Bro, my master speaker from my Z506 is "broken" according to the technician. He told me that I need to buy the master speaker, BUT that is not in amazon or any other website for me to purchase, or is it? Can the cable be fixed? Please answer. Greetings from Panama!

[@williamstephens5401]

Mines stuttering when i play music will this fix it?

[@msahin3]

must be the transistor on the mainboard the lm7812 you can easily replace it

[@williamstephens5401]

@@msahin3 you won't believe what i did to fix it 🤣 I just turn it on and leave it for 3 days straight without touching it/unpluging/use Man on the 4th day when i tried it, it worked like new i swear i thought i lost it 🤣

[@msahin3]

@@williamstephens5401 Yes that happens too but you should replace the lm7812 transistor It will do it again because that part really gets hot when used

[@williamstephens5401]

@@msahin3 i hear u, but it's been working for 2 months now and not once it when back to stuttering mode again, so I'm pretty sure it happens cause of maybe dusts cause i haven't used it for a year then i decided to see if it still works.

[@msahin3]

@@williamstephens5401 hmm yes right static ac voltage problems can cause that too so no problem for you That is good

[@sosecret21]

Worked for me. Thanks

[@Alternativelopez]

What is the voltage of the power supply? 12 or 17 volt?

[@LoneWolfReviews]

Im not to sure, i asked the seller and he wasent sure either. Sorry

[@mackybolena7070]

@@LoneWolfReviews can u test it sir .from power supply going to main board of amplifier. there is only red and black wire .. plsss sir can un test so we know what is voltages output of that power supply that you replaced .. thank you sir ang more power ..

[@maxichweisnicht7878]

On my z506 psu i mesured 16,65 V, but system isn´t working, LED ist only flashing, see my video!

[@gracekouvali6903]

The Green connector

[@virallinks8464]

this is replacing. not repairing

[@ThinkerOnTheBus]

Wait! How do I know the power supply in my Logitech z506 subwoofer has broke? What are the signs that would indicate the power supply could be broken? What if your speakers play just fine at real low volumes, but as soon as you increase the volume to a certain threshold, it causes all speakers to cut out momentarily, and that behavior is repeated constantly, as if it were receiving more power than it could utilize. What type of problem could that behavior indicate? Can it potentially be related to a bad power supply as well?

[@ThinkerOnTheBus]

@@Tisrok Have you discovered what is causing the issue yet?

[@ThinkerOnTheBus]

No, I haven't discovered a definitive cause for my speakers' malfunctioning, although logically, it seems to be related to power somehow. I was just going to risk ordering the board, and replacing it in hopes that it would solve the issue. I was about 80%-85% certain that the cause of the issue was something on the board in the subwoofer, and those were odds I was willing to take. Further, I could not find any other information online that suggested the root of the problem originates elsewhere. I went to order the replacement board, and supplies were out of stock. I checked back a few times, and the part remained out of stock. I searched for a different source for the part, and I could not locate any. Eventually, I went out and purchased the Logitech Z606, and found that speaker system to be inferior to the Z506 system. Two problems I did not care for regarding the Z606 was the center speaker was shaped exactly like the satellite speakers in that it was designed to be placed in a vertical orientation. I did not care for that, especially because at the time of replacement, it did not fit well in a vertical position . . . and besides, it just doesn't look natural. I turned it horizontally, and it doesn't look right in that orientation neither! Also, although the Z606 has a slightly higher output power, they do not sound any louder than the Z506, and without knowing the specs, I would probably claim the Z506 system was just a hair louder. Plus, the Z606 sound quality seemed inferior to the Z506, sounding rather tinny, falling short in bass for which the subwoofer does not compensate. I just checked the link provided in the video description to see if that board was available yet, and now the webpage no longer exists! I will have to hunt around for that part because I am still willing to take the risk in attempting to fix the Z506 speaker system. If I can locate the board, and it solves the issue, then I will return to using the Z506 system. I am assuming you must have had a similar problem with your speakers. If so, did you ever find a solution to your problem? Did you manage to acquire the board, and that solved the issue for you? What was the problem with your speakers? Let me know if you happen to see this!

[@escapethematrix5379]

@@ThinkerOnTheBus you can show it to electronic repair man. It will fix. May be due to power supply. We can't say. Please check connection and cables are good.

[@escapethematrix5379]

@@ThinkerOnTheBus in place or replacement board go for power supply change. So that you will no exact issues. Use 12-15 v, 4-5 Amperes.✅ In mine 12v is working but on max volume it creates disturbances. So you can fix now 😃👍

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing

[@markadrianbarrameda]

What is the dc output of the power supply?

[@marlonviray8857]

12v sir

[@Neo07070]

Safe 15V, 3-5 ampere

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing

[@llengford]

did this fix a buzzing problem with your subwoofer buzzing