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Does anyone have the schematics for klh asw10-120 home amp all I get is the runaround

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Schematic Diagrams for KLH ASW10-120


After acquiring a fried KLH ASW10-120, I write to the tech folks at KLH and they sent me the upper and lower board schematics. I asked if I could publish them online, and explicitly asked if I could share them on FixYa.com, and they gave me permission to do just that.


Here's the lower board, which has the power supply:
KLH ASW 10-120 subwoofer schematic - lower board


Here's the upper board:

KLH ASW 10-120 subwoofer schematic - upper board

on Sep 25, 2009 | KLH ASW10-120 Subwoofer

1 Answer

I burned up some resistors in my klh asw120 # r52 r48 and r49 i need the values to them so i can replace them they are too burnt to tell the color code please get back to me with the values! Thanks JASON


This is a pretty common problem with this sub.

Here's a solution that I posted earlier this year, including schematics for the upper and lower circuit boards. Be sure to check the circuit board revisions to make sure they match my schematics.

Aug 10, 2010 | KLH ASW10-120 Subwoofer

1 Answer

Hum no audio output


There are a lot of folks who've had power supply issues with this sub. Typically, the large resistors fail, which takes out the capacitors.

If you know how to read schematics and replace parts, then these might be helpful to you:

Here are the two pages of schematics from KLH. I wrote to their tech department and explicitly asked for permission to share them here.

Here's the lower board, which has the power supply:
KLH ASW 10-120 subwoofer schematic - lower board


Here's the upper board:

KLH ASW 10-120 subwoofer schematic - upper board

Dec 22, 2009 | KLH ASW10-120 Subwoofer

2 Answers

No sound and smells like burning


There are a lot of folks who've had power supply issues with this sub. Typically, the large resistors fail, which takes out the capacitors.

If you know how to read schematics and replace parts, then these might be helpful to you:

Here are the two pages of schematics from KLH. I wrote to their techdepartment and explicitly asked for permission to share them here.

Here's the lower board, which has the power supply:
KLH ASW 10-120 subwoofer schematic - lower board


Here's the upper board:

KLH ASW 10-120 subwoofer schematic - upper board


Nov 08, 2009 | KLH ASW10-120 Subwoofer

2 Answers

How do I fix a blown amp


big red
check usually the fuse just blows up just change it

Oct 22, 2009 | KLH ASW10-120 Subwoofer

1 Answer

Burns [blows out the 50v bridge rect] on power up. cant find the short??? all conds and resistors seem to check out OK ??? The four Z-diodes seem ok also ??? All transistors seem ok [no low ohms-only...


I'd suspect the 6800uF caps, but I don't know for sure.

If it helps, here are the schematics for the upper and lower boards:

Upper board
Lower board

I wrote to KLH to ask for them, and explicitly asked for permission to post them here.


Jun 15, 2009 | KLH ASW10-120 Subwoofer

1 Answer

Klh reciever


You do not know what you have to replace. You test the component on board, starting from the amp, you need a multimeter and service manual schematic to do this.
After finding faulty component you will need to use solderer and thermal paste to replace it, and you need experience, or you end up damaging the board.
Ave you done anything like this before?

I am going offline now, if you have more queries I can answer tomorrow


thanks

Sep 11, 2008 | KLH R3100 Receiver

1 Answer

Info


I wrote to KLH and they sent me the schematics for the upper and lower boards. I asked if I could share them, and they gave me permission to post them for use here.

Have fun!


KLH ASW 10-120 subwoofer schematic - lower board

KLH ASW 10-120 subwoofer schematic - upper board


Mar 10, 2008 | KLH ASW10-120 Subwoofer

6 Answers

KLH ASW10-120B subwoofer


I realize that this is an old problem, but folks are still finding it on searches, so here goes.

Here are the two pages of schematics from KLH. I wrote to their tech department and explicitly asked for permission to share them here.

Here's the lower board, which has the power supply:
KLH ASW 10-120 subwoofer schematic - lower board


Here's the upper board:

KLH ASW 10-120 subwoofer schematic - upper board


Jan 25, 2008 | KLH ASW10-120 Subwoofer

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