Comments on: How To Make A DIY PWM Tester

By: Jestine Yong

Jestine Yong — Tue, 04 Jun 2013 11:45:50 +0000

In reply to Tommy Turza.

HI Tommy,

Hope there will be someone that is able to answer the question.

Jestine

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By: Tommy Turza

Tommy Turza — Mon, 03 Jun 2013 13:35:36 +0000

Hello Jestine,

a Razer Mako 2.1 THX high-end speaker system, having been discontinued by Razer years ago and not supported any more. The system has a very distinct way of breaking down, it's a worldwide phenomenon, and nobody published anything on the net about how it could be mended. With part of the community we're working on a solution in the following forum:

http://forums.whirlpool.net.au/archive/1739055

but nothing came up yet. We'd be grateful for any professional input on this, the speakers are exceptionally rare now and very unique, finding a way to repair them would be more than welcome.

Thanks!

Tommy

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By: Jestine Yong

Jestine Yong — Sat, 01 Jun 2013 02:17:14 +0000

In reply to Tommy Turza.

HI Tommy,

What type of equipment was that?

Jestine

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By: Tommy Turza

Tommy Turza — Fri, 31 May 2013 21:44:39 +0000

Hello,

sorry for crashing in on this, but I have found this thread while looking for a solution for the Mako "ticking sound of death" problem.

My unit is at a very qualified microelectric engineer's workshop right now and we're trying to isolate the cause - any help or information that you might have uncovered can be pretty useful! Do you have any ideas how to repair that?

Thanks!

Tommy

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By: Jestine Yong

Jestine Yong — Thu, 30 Aug 2012 13:48:00 +0000

In reply to Alex Lee.

Hi Alex,

First you need to disable that supply to the speaker section and if there is no more ticking then something could have been shorted downstream. If the output voltages fluctuates then check the power supply especially the e-caps.

Jestine

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By: Alex Lee

Alex Lee — Wed, 29 Aug 2012 18:26:36 +0000

Currently toubleshooting a Razer Mako speaker. The speaker works for a few seconds, then goes into ticking mode (no more sound except ticking from speakers). When the ticking stops about a few minutes later, the speaker goes back to normal (and continues to function as it should). I've tried many things but no go. I shorted the optocoupler pins at the SMPS primary side and the ticking starts again until I remove the wire. Noticed that it uses 3845 PWM I.C. Could that I.C be at fault? Thanking in advance.

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By: simeon

simeon — Fri, 18 May 2012 02:52:45 +0000

Thank you for the isightful trick . I could not have got it from anyone else.

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