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KenO <kenitholson@yahoo.com>: May 26 04:12PM -0700 A friend recently had her audio system damaged from an AC Power Surge.   Would like to prevent this so Googled using AC Power Surge Protection and found "The Best Surge Protector by Brent Butterworth. http://thewirecutter.com/reviews/best-surge-protector/   Read link "Surge Protectors ??? (Brickwall, Zero Surge, Furman, SurgeX," http://www.avsforum.com/forum/40-oled-technology-flat-panels-general/1146963-surge-protectors-brickwall-zero-surge-furman-surgex-etc.html   Then did a Forum search and found some very long discussions such as: Surge Protectors https://groups.google.com/forum/#!searchin/sci.electronics.repair/AC$20Power$20Surge$20Protection%7Csort:relevance/sci.electronics.repair/mkLpyahIKNk/3GvjxW9LrrsJ   Surge protector fuse blown https://groups.google.com/forum/#!searchin/sci.electronics.repair/AC$20Power$20Surge$20Protection%7Csort:relevance/sci.electronics.repair/iUffPhXZsNA/Ay8058Ba46QJ   I do not have a technical background so would be interested in others comments concerning all this.   Would like to use your advice to build a cost effective audio protection system.   Thanks   Ken

Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: May 27 11:35AM +1000 On 27/05/2015 9:12 AM, KenO wrote: > A friend recently had her audio system damaged from an AC Power > Surge.   **How do you know it was a "power surge"? Where did this alleged "power surge" originate?   > others comments concerning all this.   > Would like to use your advice to build a cost effective audio > protection system.   **The best way to protect an audio system from "power surges" is to disconnect the TV antenna during lightning storms, since that is, far and away, the most common source of "power surges". Mains bourne "power surges" are incredibly rare events and almost nothing available off the shelf can deal with the energies involved.     -- Trevor Wilson www.rageaudio.com.au   --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com

Phil Allison <pallison49@gmail.com>: May 26 09:28PM -0700 KenO wrote:   > A friend recently had her audio system damaged from an AC Power Surge.   ** AC power voltage surges damaging audio gear are so rare that I cannot accept it as true without convincing evidence.   The DC power supply inside each piece of audio gear usually contains a transformer, rectifier and filter electros - a combination that eliminates AC voltage spikes/surges better than anything you can possibly buy or build.   OTOH, the term "power surge" is regularly used to explain away sudden failures in almost any electronic device - when the real cause is simply a bad component.     .... Phil

N_Cook <diverse@tcp.co.uk>: May 27 08:28AM +0100 On 27/05/2015 02:35, Trevor Wilson wrote: > and away, the most common source of "power surges". Mains bourne "power > surges" are incredibly rare events and almost nothing available off the > shelf can deal with the energies involved.   Well you survived long enough to provide this homicidal info. You disconnect TV aerials BEFORE lightening storms.

Tim R <timothy42b@aol.com>: May 27 05:08AM -0700 On Wednesday, May 27, 2015 at 3:28:50 AM UTC-4, N_Cook wrote: > > shelf can deal with the energies involved.   > Well you survived long enough to provide this homicidal info. > You disconnect TV aerials BEFORE lightening storms.   Yeah, I always wait until between flashes to climb the mast and disconnect the antenna.

Baron <baron@linuxmaniac.net>: May 27 02:24PM +0100 Phil Allison prodded the keyboard with:   > sudden failures in almost any electronic device - when the real > cause is simply a bad component.   > .... Phil   +1 -- Best Regards: Baron.

Glenn Russell <sasquatch763@gmail.com>: May 26 01:46PM -0700 My vintage Sony Trinitron model KV-19TS20 goes wacky after inly a few seconds. screen has jagged lines and makes a noise that changes in pitch from low to high. Can somebody please help me?

rev.11d.meow@gmail.com: May 26 03:38PM -0700 On Tuesday, May 26, 2015 at 1:46:05 PM UTC-7, Glenn Russell wrote: > My vintage Sony Trinitron model KV-19TS20 goes wacky after inly a few seconds. screen has jagged lines and makes a noise that changes in pitch from low to high. Can somebody please help me?   What have you tried on it so far?

Fred McKenzie <fmmck@aol.com>: May 26 01:02PM -0400 In article <77445e09-9b7a-43e0-b3dc-95aa6a8c1e48@googlegroups.com>,   > I know that there is a lithium battery inside that could be bad but the book > mentions a different code for that fault.   Lenny-   I find that Lithium backup batteries usually last in excess of ten years. Measure the battery Voltage. I would expect 3.6 Volts for a new battery, but 3.0 Volts should still maintain memory.   Some equipment can retain memory contents with lower battery Voltage than others. If it is very low, replace battery and see if the error message changes.   If an original battery can not be obtained, you may be able to wire in something like a Radio Shack 270-009 CR2032 Battery Holder.   Fred

Jeff Liebermann <jeffl@cruzio.com>: May 26 11:20AM -0700 On Mon, 25 May 2015 16:37:21 -0700 (PDT), captainvideo462009@gmail.com wrote:   >I have a Waveteck model 3100 service monitor.   I can't even find a photo of a Wavetek (or CT Systems) 3100. Also, no downloadable manual. Got a link to get me started?   I have a few Wavetek 3000 series service monitors. <http://802.11junk.com/jeffl/pics/home/slides/BL-shop5.html> If the 3100 is somewhat similar, I might be able to offer a clue. A dead battery is a good start.   Note that the Wavetek and CT Systems service monitors were NOT made to be tuned in the unit. Instead, there was a fixture at the factory where all the tuning was performed. The same philosophy applies to repair. The manual offers some basics, a circuit description, no voltages, no waveforms, and help. When Wavetek discontinued the CT Systems products, they threw away all the fixtures. The only way I've been able to fix the 3000b service monitors is by comparing voltages and waveforms with a known working (or barely working) unit.   Good luck. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Sam Seagate <saseag44419@yahoo.com>: May 26 12:44PM -0400 Update as of May 26, 2015: Well, using 4 of the warm white C7 LED bulbs in series @ 10 mA current should have done the trick, but my resulting lights have started burning out one by one. Lost two so far and another is flickering. I can't figure out why, current is low and they didn't seem to generate much heat to speak of. Also, when I was just using a single bulb @10mA, none of the candles burned out for over 3 years and even then when I decided to brighten them by using 4 in series, none of the original singles had burned out. Any idea why the four in series are slowly failing with same current and voltage as the single lamps were? I'm disappointed in this for sure.   Sam

Sjouke Burry <burrynulnulfour@ppllaanneett.nnll>: May 26 07:05PM +0200 On 26.05.15 18:44, Sam Seagate wrote: > are slowly failing with same current and voltage as the single lamps > were? I'm disappointed in this for sure.   > Sam Part of the cooling comes from the mounting wires, and if the leds are close together, they also get hotter. That is bad. Also a real current source instead of a (small??) resistor might increase survival, because voltage drop for each led is rather dependent on temp/current.

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