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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to rec.audio.tech,sci.electronics.repair,sci.electronics.basics
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PC speaker hum
Neil Green wrote: "Eeyore" wrote in message ... Neil Green wrote: This may be the wrong group but I figure electronics is kinda universal, and the good people here have helped me before. I have a constant high pitched hum coming from the internal PC speaker, the one connected to the motherboard. The connector is oriented correctly. At first it was intermittent but now is constant, so I've pulled the lead off to disable the speaker. The PC is running perfectly, and I can't find any information on this problem with Google, except that apparently a batch of HP computers (which this one isn't) apparently had a similar problem caused by a leaky rectifier on the motherboard. Does anyone have any ideas? See if there's a group for HP PCs ? This cerainly isn't an audio question. Graham It's not a HP, and I'm sorry if this is the wrong group but I figured that hum from a speaker is audio. I know this group is mainly concerned with hi-fi stuff but I don't know where else to ask. sci.electronics.repair and sci.electronics.basics come to mind. Please do crosspost and don't multipost btw. Sod it, I'll do it myself. Graham |
#2
Posted to rec.audio.tech,sci.electronics.repair,sci.electronics.basics
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PC speaker hum
Neil Green wrote:
This may be the wrong group but I figure electronics is kinda universal, and the good people here have helped me before. I have a constant high pitched hum coming from the internal PC speaker, the one connected to the motherboard. The connector is oriented correctly. At first it was intermittent but now is constant, so I've pulled the lead off to disable the speaker. The PC is running perfectly, and I can't find any information on this problem with Google, except that apparently a batch of HP computers (which this one isn't) apparently had a similar problem caused by a leaky rectifier on the motherboard. Does anyone have any ideas? Most common cause is the audio ground connection coming adrift in the connecting lead/plugs/sockets, in the lead from pc to speakers. A multimeter will check this lead. Much less common is a bad suppply electrolytic. NT |
#3
Posted to rec.audio.tech,sci.electronics.repair,sci.electronics.basics
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PC speaker hum
I believe he is speaking abou the internal pc speaker not the sound card and
external speakers. - Mike wrote in message oups.com... Neil Green wrote: This may be the wrong group but I figure electronics is kinda universal, and the good people here have helped me before. I have a constant high pitched hum coming from the internal PC speaker, the one connected to the motherboard. The connector is oriented correctly. At first it was intermittent but now is constant, so I've pulled the lead off to disable the speaker. The PC is running perfectly, and I can't find any information on this problem with Google, except that apparently a batch of HP computers (which this one isn't) apparently had a similar problem caused by a leaky rectifier on the motherboard. Does anyone have any ideas? Most common cause is the audio ground connection coming adrift in the connecting lead/plugs/sockets, in the lead from pc to speakers. A multimeter will check this lead. Much less common is a bad suppply electrolytic. NT |
#4
Posted to rec.audio.tech,sci.electronics.repair,sci.electronics.basics
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PC speaker hum
On Sun, 17 Sep 2006 02:28:12 -0400, "Michael Kennedy"
wrote: I believe he is speaking abou the internal pc speaker not the sound card and external speakers. What, that little buzzer that does the "beep" when you start up? Sure, throw it away. |
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