Question about Philips MCD908/37 System
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Posted on Jan 02, 2017
SOURCE: Sound Problem
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
As I found somewhere on the internet; there are two 470uF/25V capacitors on the power supply board in the sub-woofer that are the cause of buzzing, crackling and then eventually no sound. Go to Radio Shack and buy two Catalog #: 272-1030 470uF/35V capacitors and change them out. They are in the middle of the Power Supply PCB and are close to the long flat aluminum heatsink. Make sure you match the polarity properly when replacing. Your unit will be as good as new and will proibably last forever now.
Posted on Jul 18, 2008
I had the same problem except my volume would just decrease after a few minutes of being on like someone was pressing the volume down buttton. If I walked over to the subwoofer and gave it a knock on the top the volume would instantly come back on where I had it set before. I took WheatService's advice and replaced the 470uF/25Vcapacitors and everything is working great now. I am very pleased. BTW, the parts at radio shack were like $3.00. I needed a desoldering tool, which I would recommend for this job...the one with the suction ball. I also needed some more soldering wire for a total repair cost of about $17. If you have all the tools the capacitors will cost you $3.00. Philips wanted to send me a replacement unit for $100.00 and I'm sure the local repair shop would have been the same if not more. Thanks again, WheatService!
Posted on Aug 12, 2008
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Mar 20, 2017 | Music
Sep 05, 2011 | Philips Audio Players & Recorders
click start control panel sounds and
audio,volume,advanced,speakers select the appropriate speakers from the drop
down list or navigate to the device manager scroll to system devices + to
expand,system speaker right click properties then select use this device
(enable) also you might check
the speakers plug/outlet is usually at the back of the computer you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good
try cleaning your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the sound card and the CPU central processing unit dust causes static to build up in a computer
if this fails to fix the problem you might have warranty if the speakers are only one month from purchase date
hope this helps
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