Question about Philips LX3000D System

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Sound Problem The problem started approx 2 months ago ,when the sound from all speakers ,including the woofer just didn't come on.Then after waiting between 5 and 10 minutes,there would suddenly be a loud 'crack',and the speakers would start working again. As of yesterday 25/8/06 ,it has remained completely silent. I have tried all the connections ,which seem ok.There is also a very faint background hiss from the small speakers ,which would suggest power is reaching them. Any advice would be greatly appreciated

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  • hektorsula Jan 05, 2009

    I have exactly the same problem. I sent the equipment to repair, but they didn't do anything. Please help!

  • brianwilson1 Apr 21, 2009

    No sound. then suddenly a 'bang' and surround sound in all its glory. Except a few months ago. Nothing. Nothing. Nothing.

    Now we still have nothing. Today, I started looking at the internals of the machine. Don't really understand the diagrams enough to really get a clear idea of what's going on. But after cleaning it out with the hoover and poking around a bit - don't know how I haven't fried it with static yet - it seems to have done something, because now again we have (a large number of bangs) but also some sound coming out of the DVD player. Hurray!

    I did press on the sound card also, as someone suggested.



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Hi all
I also had this problem. I fixed it by tracing the fault to a dry joint on Z401, a zener diode responsible for the -7v to IC405/6.

There are 4 zener diodes (Z401 - 4) that should have between 6 and 7 v across them. They're visible from the top side of the main PCB.

There's an excellent Service manual available from here.

I'm listening to my LX3000d right now with a smile on my face.


Posted on Apr 04, 2008

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"Could possibly be a bad solder joint that doesn't make contact
until something warms up and expands."
That is TRUE.
I have had the same problem but I do not realy bealive this could be
bad solder joint.
Finally I unscrew many screws and find bad joint
at R467 near zenner dide ZD404 and IC408.
Also check all resistors and zenner diode from +12V and -12V supply
which are under thermal pressure.

Posted on Apr 03, 2009

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Hello people.
First of all, you must be carefull with flatcables and with statics and ressolder all the heatsinks zones, prior to the big one where the output audio amplifier chips are mounted. Ressolder no matter you can´t see anyting wrong.
After it reassemble the pcb mainboard and gently press the pcb over M62446. It´s the volume and tone control. If the sound fails, it must be ressoldered. (SMD, not easy for beginners, and therefore not recommended) or replaced.
Check other components on the enviroment.
Press gently to test.
Ressolder is recommended for all the main board.


Posted on Nov 29, 2007

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Up to today i thought i was the only one that faced this problem but now i see we are many.i am dissapointed that a great and reliable brand like PHILLIPS sells crupy equipment.I thought it was a trustworthy brand but now i will think twice before buying anither PHILLIPS product.I am not a technician to open the product and screw and unscrew.I just wait till the sound appears whenever it does.It's so sad

Posted on Sep 08, 2009

Hi Larry ,Amazing though it sounds,the problem seemed to resolve itself.Shortly after posting my problem on here ,and after getting no response, I decided to buy another theatre system.Believe it or not, the day I bought it, the Philips unit started working again,and actually better than ever.The only thing I could think may have happened is ,the night before it started working again, I stripped the whole lot down, including taking the lid off the cd player ,and cleaned out all of the dust etc. I also cleaned the cable terminals with WD 40. Whether this was the reason it worked I don't know ,but might be worth a try . Ps Its still going strong, but I've kept the new theatre system,cos I know eventually ,as it is a Philips it WILL GO WRONG.

Posted on Feb 08, 2007

Hi jabba, Sorry I don't have a solution for you, but I suffer from exactly the same problem. Everything on the system such as DVD playback works, but I have lost all sound. Used to be an intermitent no sound problem, but now getting nothing. Were you ever able to resolve this problem, posted in August as it seems to be identical to my issue? Regards, Larry

Posted on Feb 07, 2007

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