PSW 125 Subwoofer Schematic

Wassis
Wassis Posts: 3
edited November 2013 in Troubleshooting
Hi Polk´s guys,

I need the electrical diagram (schematic) of PSW 125 Subwoofer.

Who can help, please post the link or send in a private message to my email.

Thanks.
Post edited by Wassis on
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  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited November 2013
    Polk's CS department can help with that, contact them at: polkcs@polkaudio.com or call 1-800-377-7655.
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  • Wassis
    Wassis Posts: 3
    edited November 2013
    Kenneth Swauger wrote: »
    Polk's CS department can help with that, contact them at: polkcs@polkaudio.com or call 1-800-377-7655.

    I live outside the U.S. and I can´t make international calls, so I made several requests to Polkaudio CS department by email
    polkcs@polkaudio.com , but strangely they did NOT send me the schematics for the PSW 125 power amplifier and power supply.

    I need them to repair my subwoofer that burned several months ago and I´m very grateful if someone can send me these schematics by email.

    Thanks for all.
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  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited November 2013
    Hello,
    Send an email to: kjasper@polkaudio.com he'll be able to respond.
    Cheers, Ken
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  • Wassis
    Wassis Posts: 3
    The main board of my PSW 125 subwoofer was damaged many months ago with some components completely destroyed, making impossible to repair it without checking their factory specifications on the schematics, and there is NO Polkaudio authorized service center in my city, or in nearby cities.

    Because of this situation I requested for Polk Consumer Support to send me by e-mail the complete electrical diagrams PSW 125 subwoofer, especially the amplifier/power suply module ​​schematics, but I received only the signal and control schematics (feature board).

    At all times I have requested the schematics for Polk CS, they informed don't having PSW 125 complete electrical diagrams, containing the amplifier/power supply module in their data base files, however they did nothing to solve this problem.

    I tried even contact to OEM manufacturer of amplifier/power supply module (Sonavox Electronics), but we was told me that they are not allowed to directly provide me PSW125 full schematics. So, why Polk CS not requested those full schematics for Sonavox until today, over a year after my first request to them?

    I own many Polk products by longtime and I'm very, very surprised and frustrated by the fact that even after such a long wait, POLK CS DON'T HAVE the PSW 125 FULL SCHEMATICS IN THEIR DATA BASE FILES, because this subwoofer is still manufactured and sold normally, and without the schemes of the amplifier/power supply module there is no way for correctly repair it, throwing all my investment in the garbage.

    I will be very grateful for help.
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  • Fabio_rm
    Fabio_rm Posts: 53
    Wassis wrote: »
    The main board of my PSW 125 subwoofer was damaged many months ago with some components completely destroyed, making impossible to repair it without checking their factory specifications on the schematics, and there is NO Polkaudio authorized service center in my city, or in nearby cities.

    Because of this situation I requested for Polk Consumer Support to send me by e-mail the complete electrical diagrams PSW 125 subwoofer, especially the amplifier/power suply module ​​schematics, but I received only the signal and control schematics (feature board).

    At all times I have requested the schematics for Polk CS, they informed don't having PSW 125 complete electrical diagrams, containing the amplifier/power supply module in their data base files, however they did nothing to solve this problem.

    I tried even contact to OEM manufacturer of amplifier/power supply module (Sonavox Electronics), but we was told me that they are not allowed to directly provide me PSW125 full schematics. So, why Polk CS not requested those full schematics for Sonavox until today, over a year after my first request to them?

    I own many Polk products by longtime and I'm very, very surprised and frustrated by the fact that even after such a long wait, POLK CS DON'T HAVE the PSW 125 FULL SCHEMATICS IN THEIR DATA BASE FILES, because this subwoofer is still manufactured and sold normally, and without the schemes of the amplifier/power supply module there is no way for correctly repair it, throwing all my investment in the garbage.

    I will be very grateful for help.

    At the end have you found a solution? I have problem on psw110, maybe It have same amplifier, somebody had send me the schematic but there is not voltages references on it, and, over all, lack the schematic of miniboard of oscillator that drive the mosfet of power supply. I have tested all the other components and all seems to be OK, i think there is a problem on this oscillator miniboard but i cant do nothing to try reparation without schematic of this part
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  • franronc
    franronc Posts: 2
    Hi guys, I need a photo of the PSW125 amp plate. I especially need the power supply area under the FETs because I missed some tracks and I can't restore them. Thank you
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  • Fabio_rm
    Fabio_rm Posts: 53
    franronc wrote: »
    Hi guys, I need a photo of the PSW125 amp plate. I especially need the power supply area under the FETs because I missed some tracks and I can't restore them. Thank you

    Post pics of your PCB, if there's any chance it's the same as the PSW110 with some different components, I have a pic of the bottom part of this one.
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  • franronc
    franronc Posts: 2
    Thanks Fabio for being interested in the topic. I am sending photos of the card and details of the destroyed trackslawur6997otz.jpg
    x4hgoqfwiuab.jpg
    3e7p1hjn22vr.jpg
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  • Fabio_rm
    Fabio_rm Posts: 53
    edited February 8
    franronc wrote: »
    Thanks Fabio for being interested in the topic. I am sending photos of the card and details of the destroyed tracks

    I'm sorry franronc, the amplifier is different, I had assumed that it was the same because the pcb of PSW110 amplifier is the same, with some components variations, a version of the PSW111, which declares the same power as the PSW125, 150Wrms and 300 peak. Maybe this amplifier is the same of the other version of PSW111 :/
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  • kamboRambo
    kamboRambo Posts: 3
    Wow my psw125 went out few months ago too which is crazy , it kept blowing fuses , I took it apart and checked everything and the mosfets were blown , I replaced the mosfets and it blew again, someone that repairs these boards told me the glue Polk audio uses on these boards dry up and become conductive , causing shorts all over the place I attempted to clear out all the glue and replaced few resistors and capacitors all
    Around the board now the board doesn’t blow fuse anymore and nothing is shorted but It doesn’t turn on either I either damaged traces during the repair or put in the wrong value resistor cause you can’t even tell what it was ! xvn39arak2jo.jpeg
    [img]https://us.v- cdn.net/5021930/uploads/editor/4o/titljbp32cm6.jpeg[/img]
    fbzpv1ykeoxs.jpeg


    Also I am not sure about the traces I repaired if I did it correctly as there is still glue blocking half the board and I can’t get it off , so pissed off I called Polk audio and asked for diagram and the women on the phone was clueless as in what I was asking for! She kept insisting I give her the serial # and the location where I bought it from and then tells
    Me I am not under warranty and she can’t help me wasted 24min of my time pathetic customer support , I am about given up on the board ! I am sure it’s not worth repairing , I am going to buy cheap class D amp and stick it in there and sell it
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  • kamboRambo
    kamboRambo Posts: 3
    gnm9nh4fee9p.jpg
    k5r23zj3v5c8.jpg0n7uzilqci0d.jpg

    Here is more pics after I was done the failed repair
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  • kamboRambo
    kamboRambo Posts: 3
    Btw I know a guy that can fix it but he will charge you around 160$ , his fixed about 20 of these for me it’s not worth it but some of you who need it done and are stuck it might be the only option
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  • F1nut
    F1nut Posts: 50,495
    Your guy has fixed about 20 PSW125 subs for you!?!
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • VR3
    VR3 Posts: 28,611
    That's dedication
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • F1nut
    F1nut Posts: 50,495
    Interesting article on the yellow glue.
    https://sound-au.com/articles/yellow-glue.htm#:~:text=If the evil 'yellow glue,to DC will cause electrolysis.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • F1nut
    F1nut Posts: 50,495
    VR3 wrote: »
    That's dedication

    I was going to say something else, but...
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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