Re: Strange Problem
Hi All, I am 99% sure I found the problem, hard to believe what it was but it does make some sense if you think about it. I was working on a project for one of my clients when I noticed the App that monitors my fans and temperature was not loaded. It always shows in the Menu bar. I tried to restart it but got a message that a newer version was available. Once I downloaded the new version, did the update and restarted I noticed noise from the fans, and realised I had not heard that for a while. Almost immediately the noise problem went away. Seems like it was all due to overheating, although I do not understand why only the Analog Line-out was affected. Keeping my fingers crossed, it has been quiet for almost three days now... Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi Paul, Is it one of the 2 Analog Output jacks or the optical digital-out Port? Have you tried connecting a different cable to test? Probably is time to get a technician to check the Audio Line-Out Port A trip to see Boz at MacWorx Joondalup perhaps? Cheers, Ronni Sent from Ronni's iPad4 On 6 Mar 2015, at 5:17 pm, Paul Willemse pjwille...@gmail.com wrote: Hi All, Sorry for the long delay but so far not much luck with the problem. All I have been able to determine is that the noise appears to be created internally on the Audio line-out port. Also I finally realised the noise was not affected by the volume controls and does not happen on the internal speakers. If I put the computer to sleep via the Apple Menu and leave it alone for an hour or so the noise disappears. The noise will start up again after an hour or two once the computer is awake. Next step is probably a trip to the Apple Repair Centre. The mystery continues… Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi All, Sorry for the long delay but so far not much luck with the problem. All I have been able to determine is that the noise appears to be created internally on the Audio line-out port. Also I finally realised the noise was not affected by the volume controls and does not happen on the internal speakers. If I put the computer to sleep via the Apple Menu and leave it alone for an hour or so the noise disappears. The noise will start up again after an hour or two once the computer is awake. Next step is probably a trip to the Apple Repair Centre. The mystery continues… Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi Ronni, There is only one Analog or Line-out Port on the MacPro, I do not use the Optical Port. I have tried a different cable, a different external amplifier, even no amplifier, all with no change. I would like to come to MacWorx Joondalup but it is quite a trip from Singapore! Also the MacPro is a bit heavy... There is a Mac Repair Centre here so I will visit there as soon as my current project is finished, probably early next week. I will keep everybody informed. Regards, Paul On 6 March 2015 at 18:34, Ronda Brown ro...@mac.com wrote: Hi Paul, Is it one of the 2 Analog Output jacks or the optical digital-out Port? Have you tried connecting a different cable to test? Probably is time to get a technician to check the Audio Line-Out Port A trip to see Boz at MacWorx Joondalup perhaps? Cheers, Ronni Sent from Ronni's iPad4 On 6 Mar 2015, at 5:17 pm, Paul Willemse pjwille...@gmail.com wrote: Hi All, Sorry for the long delay but so far not much luck with the problem. All I have been able to determine is that the noise appears to be created internally on the Audio line-out port. Also I finally realised the noise was not affected by the volume controls and does not happen on the internal speakers. If I put the computer to sleep via the Apple Menu and leave it alone for an hour or so the noise disappears. The noise will start up again after an hour or two once the computer is awake. Next step is probably a trip to the Apple Repair Centre. The mystery continues… Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi All, I have been trying all the various options presented, so far no real change. I will let you know the outcome as soon as possible. Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
What about replacing the monitors, either by borrowing some to test the theory that the monitors are the problem, or buying a new pair. You've already narrowed the problem it seems Sent from Tim's iPad On 25/02/2015, at 6:14 PM, Paul Willemse pjwille...@gmail.com wrote: Hi Tim, I happen to be, among other stings a qualified electrician. I have gone through all the wiring in the house with an oscilloscope. The source is definitely in the monitors, it appears both are affected. I have checked grounding, leakage, shorts/opens just about everything I can think of. I agree it sounds serious but I am at my wits end. It is definitely not static, it is too regular for that. Regards, Paul Paul this sounds pretty serious if it is affecting other devices. I'd be getting some professional electrical advice ASAP and getting them to test the building wiring. Your earthing might not be adequate, or some shielding is breaking down. This noise you talk about, is it like static electricity is building up on the screens? Think about what else has changed to create a static charge in your house. New carpets? Electrical work done, at your place or nearby? Some switches may be failing too. Plenty to investigate by an onsite expert with a meter. Tim -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi Paul Did you check for ground loops? Are the monitors and computer separately grounded via 3-pin plugs? Try a single mains earth connection for your computer system. Try separately connecting an earth wire from the monitors back to the computer. Is the house earth connection solidly connected at zero ohms? Recent hot dry weather may have dried out the soil near the earth stake. Hose in some soil-wetter solution! Dos the 240 volt supply waveform change when the fault occurs? May be external power supply interference. Cheers Alan On 25 Feb 2015, at 6:14 pm, Paul Willemse pjwille...@gmail.com wrote: Hi Tim, I happen to be, among other stings a qualified electrician. I have gone through all the wiring in the house with an oscilloscope. The source is definitely in the monitors, it appears both are affected. I have checked grounding, leakage, shorts/opens just about everything I can think of. I agree it sounds serious but I am at my wits end. It is definitely not static, it is too regular for that. Regards, Paul Paul this sounds pretty serious if it is affecting other devices. I'd be getting some professional electrical advice ASAP and getting them to test the building wiring. Your earthing might not be adequate, or some shielding is breaking down. This noise you talk about, is it like static electricity is building up on the screens? Think about what else has changed to create a static charge in your house. New carpets? Electrical work done, at your place or nearby? Some switches may be failing too. Plenty to investigate by an onsite expert with a meter. Tim -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Paul this sounds pretty serious if it is affecting other devices. I'd be getting some professional electrical advice ASAP and getting them to test the building wiring. Your earthing might not be adequate, or some shielding is breaking down. This noise you talk about, is it like static electricity is building up on the screens? Think about what else has changed to create a static charge in your house. New carpets? Electrical work done, at your place or nearby? Some switches may be failing too. Plenty to investigate by an onsite expert with a meter. Tim Sent from Tim's iPad On 25/02/2015, at 5:33 PM, Paul Willemse pjwille...@gmail.com wrote: Hi Ronni, Sorry for the delay in answering I was with one of my clients. BENQ was my first stop no response for 2 days... The model is BENQ G2400W LCD Monitor. They are approximately 4 years old and have never given any problems. The electrical noise is so extensive even my electronic thermometers for my wine cellar stop reading - major catastrophe - the noise couples into the wiring. Regards, Paul On 25 February 2015 at 11:54, Ronda Brown ro...@mac.com wrote: Hi Paul, Are these the two identical BENQ Monitors you have been using for some time? The noise sounds similar to static electricity or perhaps problem with components in the electronic circuit... You have given the details of your Mac Pro, but no details of the monitors. Would need details of the monitors - LCD - model name number etc to be able to suggest anything to help solve the problem. Have you checked with BENQ support? Cheers, Ronni Sent from Ronni's iPad4 On 25 Feb 2015, at 10:44 am, Paul Willemse pjwille...@gmail.com wrote: Hi All, Got a weird one. For background, my system uses 2 physical screens. After some time the screens create a lot of electrical noise. The time varies but it will occur several times per day. The noise varies from very loud to almost dead quiet. The screens make the electrical (loud crackling) noise whenever a refresh takes place. At first it appeared to be related to memory use but that proved false. The interference created is enough to affect my HTTP server on another IP so I have no choice but to shut down my main development system. Can anyone point me in the right direction, please? Mac Pro (Mid 2010) Processor: 2 x 2.66 GHz 6-Core Intel Xeon Memory: 12 GB 1333 MHz DDR3 ECC System Version: OS X 10.10.2 (14C109) Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
re: Strange Problem
Hi Tim, I happen to be, among other stings a qualified electrician. I have gone through all the wiring in the house with an oscilloscope. The source is definitely in the monitors, it appears both are affected. I have checked grounding, leakage, shorts/opens just about everything I can think of. I agree it sounds serious but I am at my wits end. It is definitely not static, it is too regular for that. Regards, Paul Paul this sounds pretty serious if it is affecting other devices. I'd be getting some professional electrical advice ASAP and getting them to test the building wiring. Your earthing might not be adequate, or some shielding is breaking down. This noise you talk about, is it like static electricity is building up on the screens? Think about what else has changed to create a static charge in your house. New carpets? Electrical work done, at your place or nearby? Some switches may be failing too. Plenty to investigate by an onsite expert with a meter. Tim -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi Ronni, Sorry for the delay in answering I was with one of my clients. BENQ was my first stop no response for 2 days... The model is BENQ G2400W LCD Monitor. They are approximately 4 years old and have never given any problems. The electrical noise is so extensive even my electronic thermometers for my wine cellar stop reading - major catastrophe - the noise couples into the wiring. Regards, Paul On 25 February 2015 at 11:54, Ronda Brown ro...@mac.com wrote: Hi Paul, Are these the two identical BENQ Monitors you have been using for some time? The noise sounds similar to static electricity or perhaps problem with components in the electronic circuit... You have given the details of your Mac Pro, but no details of the monitors. Would need details of the monitors - LCD - model name number etc to be able to suggest anything to help solve the problem. Have you checked with BENQ support? Cheers, Ronni Sent from Ronni's iPad4 On 25 Feb 2015, at 10:44 am, Paul Willemse pjwille...@gmail.com wrote: Hi All, Got a weird one. For background, my system uses 2 physical screens. After some time the screens create a lot of electrical noise. The time varies but it will occur several times per day. The noise varies from very loud to almost dead quiet. The screens make the electrical (loud crackling) noise whenever a refresh takes place. At first it appeared to be related to memory use but that proved false. The interference created is enough to affect my HTTP server on another IP so I have no choice but to shut down my main development system. Can anyone point me in the right direction, please? Mac Pro (Mid 2010) Processor: 2 x 2.66 GHz 6-Core Intel Xeon Memory: 12 GB 1333 MHz DDR3 ECC System Version: OS X 10.10.2 (14C109) Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Tim and Alan have given very good sounding electrical advice of which I have no knowledge whatsoever. So I won't add my reply to their posts. I do know a little about LCD monitors though ;-) Just something you could perhaps try to see if it makes any difference to the noise. The capacitors that some manufacturers use in LCDs after awhile start to resonate at a high frequency. Adjusting the brightness setting of the LCD might help since this changes the frequency these capacitors resonate at. I would suggest you try adjusting the brightness setting of the LCD to a value greater than - or equal to 95. See if increasing the brightness value makes any difference to the noise. Cheers, Ronni Sent from Ronni's iPad4 On 25 Feb 2015, at 5:33 pm, Paul Willemse pjwille...@gmail.com wrote: Hi Ronni, Sorry for the delay in answering I was with one of my clients. BENQ was my first stop no response for 2 days... The model is BENQ G2400W LCD Monitor. They are approximately 4 years old and have never given any problems. The electrical noise is so extensive even my electronic thermometers for my wine cellar stop reading - major catastrophe - the noise couples into the wiring. Regards, Paul On 25 February 2015 at 11:54, Ronda Brown ro...@mac.com wrote: Hi Paul, Are these the two identical BENQ Monitors you have been using for some time? The noise sounds similar to static electricity or perhaps problem with components in the electronic circuit... You have given the details of your Mac Pro, but no details of the monitors. Would need details of the monitors - LCD - model name number etc to be able to suggest anything to help solve the problem. Have you checked with BENQ support? Cheers, Ronni Sent from Ronni's iPad4 On 25 Feb 2015, at 10:44 am, Paul Willemse pjwille...@gmail.com wrote: Hi All, Got a weird one. For background, my system uses 2 physical screens. After some time the screens create a lot of electrical noise. The time varies but it will occur several times per day. The noise varies from very loud to almost dead quiet. The screens make the electrical (loud crackling) noise whenever a refresh takes place. At first it appeared to be related to memory use but that proved false. The interference created is enough to affect my HTTP server on another IP so I have no choice but to shut down my main development system. Can anyone point me in the right direction, please? Mac Pro (Mid 2010) Processor: 2 x 2.66 GHz 6-Core Intel Xeon Memory: 12 GB 1333 MHz DDR3 ECC System Version: OS X 10.10.2 (14C109) Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Strange Problem
Hi All, Got a weird one. For background, my system uses 2 physical screens. After some time the screens create a lot of electrical noise. The time varies but it will occur several times per day. The noise varies from very loud to almost dead quiet. The screens make the electrical (loud crackling) noise whenever a refresh takes place. At first it appeared to be related to memory use but that proved false. The interference created is enough to affect my HTTP server on another IP so I have no choice but to shut down my main development system. Can anyone point me in the right direction, please? Mac Pro (Mid 2010) Processor: 2 x 2.66 GHz 6-Core Intel Xeon Memory: 12 GB 1333 MHz DDR3 ECC System Version: OS X 10.10.2 (14C109) Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
Re: Strange Problem
Hi Paul, Are these the two identical BENQ Monitors you have been using for some time? The noise sounds similar to static electricity or perhaps problem with components in the electronic circuit... You have given the details of your Mac Pro, but no details of the monitors. Would need details of the monitors - LCD - model name number etc to be able to suggest anything to help solve the problem. Have you checked with BENQ support? Cheers, Ronni Sent from Ronni's iPad4 On 25 Feb 2015, at 10:44 am, Paul Willemse pjwille...@gmail.com wrote: Hi All, Got a weird one. For background, my system uses 2 physical screens. After some time the screens create a lot of electrical noise. The time varies but it will occur several times per day. The noise varies from very loud to almost dead quiet. The screens make the electrical (loud crackling) noise whenever a refresh takes place. At first it appeared to be related to memory use but that proved false. The interference created is enough to affect my HTTP server on another IP so I have no choice but to shut down my main development system. Can anyone point me in the right direction, please? Mac Pro (Mid 2010) Processor: 2 x 2.66 GHz 6-Core Intel Xeon Memory: 12 GB 1333 MHz DDR3 ECC System Version: OS X 10.10.2 (14C109) Regards, Paul -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Settings Unsubscribe - http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
