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Ralph Mowery <rmowery42@charter.net>: Mar 25 12:23PM -0400 In article <sdidnejD6epxicH9nZ2dnUU7-XGdnZ2d@giganews.com>, jdangus@att.net says...   > E = I x R and P = E x I.   > If you don't know/understand this, you have no idea of > what things are capable or incapable of.   It is not so much the law of P = E x I, but the way it is applied.   There is a 'music'rating for the amplifier/speakers. Seems to sort of being related to radar power. You pulse the microwave device with a few micro seconds of power several times a second and get a peak power of many thousand of watts, but the average power is just 10 watts.

David Farber <farberbear.unspam@aol.com>: Apr 01 09:32PM -0700 On 3/27/2021 5:33 PM, Rheilly Phoull wrote: >> Five years ago, I acquired a nice used HP DV5 laptop.  Only problem is >> that after only running for a short time, it slows almost to the point   >> of a crawl in speed.  At first I didn't know what the reason was, but >> then I discovered that if I aimed a small fan at it, the problem went >> away.  So a couple of years back, I used it for days to help nuke some >> there must be a better way.  Any ideas would be welcome and >> appreciated. Thanks in advance.   > Have you checked the cpu fan for fluff etc ?   The HP laptops of that vintage are well known for their poorly engineered cooling systems. Not only can the CPU overheat but the GPU will also overheat. This will cause all sorts of video issues. Open the laptop and thoroughly clean out the accumulated dust in the heat sinks, vents and fans. There are all sorts of youtube videos to walk you through the procedure. If you repair it before the video chip gets cooked, it should last a long time. A bit of advice regarding the youtube videos that demonstrate how to re-flow the solder on a failing video processor, it's only a temporary fix and not worth the trouble.   -- David Farber Los Osos, CA

Rheilly Phoull <rheilly@bigslong.com>: Apr 02 01:48PM +0800 On 2/04/2021 12:32 pm, David Farber wrote:   > -- > David Farber > Los Osos, CA   Agreed

Clifford Heath <no.spam@please.net>: Apr 02 10:21PM +1100 On 2/4/21 3:32 pm, David Farber wrote: > cooked, it should last a long time. A bit of advice regarding the > youtube videos that demonstrate how to re-flow the solder on a failing > video processor, it's only a temporary fix and not worth the trouble.   Apple sold Macbook Pro's around 2010 made with a new soldering profile/process that caused the GPU balls to crack. Eventually they were persuaded (by a class action) to replace any that were returned, even outside the warranty period - but the replacement logic boards had the same fault and failed again within a year. Ask me how I know :(   After over a decade of using Apple hardware, I am now determined that my next computer will *not* be an Apple.   CH

Adrian Caspersz <email@here.invalid>: Apr 02 01:28PM +0100 On 02/04/2021 12:21, Clifford Heath wrote: > persuaded (by a class action) to replace any that were returned, even > outside the warranty period - but the replacement logic boards had the > same fault and failed again within a year. Ask me how I know :(   There have been lots of similar cases with other manufacturers. It's not only Apple users that have been affected.   > After over a decade of using Apple hardware, I am now determined that my > next computer will *not* be an Apple.   Why? Apple IT is bought and paid for the software, productivity and creativity in what ever is done with it. Metaphorically speaking it is a smart vehicle for getting from A to B, and for many whole system does the job well within its constraints.   If the system worked for you, then upgrade ...   The hardware is designed to be disposable, unserviceable and to be eventually recycled to electronic compost. It has a limited lifetime.   If that irks (and it does to me, to be honest), then seems the value of whatever is created is less than the cost of the equipment, and the purchaser has made a poor investment that is heavily depreciating doing very little.   Like a non-classic car.   -- Adrian C

Cydrome Leader <presence@MUNGEpanix.com>: Apr 01 05:15PM > This has to be one of the most insane pieces of advice ever given - excepting those from Jimmy Neutron. This approaches the quality of advice around using aluminum cans to cover holes in an automotive firewall.   > Peter Wieck > Melrose Park, PA   Agreed. When putting an extension cord in a foot trafficed are you wrap it in oily rags, so the there's no friction to pinch the insulation. Then you cover it with a nylon rug or other insulating material.

whit3rd <whit3rd@gmail.com>: Apr 01 01:25PM -0700 On Tuesday, March 30, 2021 at 7:43:07 AM UTC-7, Hem Jung wrote: > Just had to power something pretty far away from the outlet and had to > use a standard extension cord. Since this goes across the floor, I'm > wondering if there's anything I can do to make this anti-trip?   There are speaker-cord solutions (very flat cable, suitable for under-rug use) but not recommended for AC line power. Another solution in utility areas is to screw a few hooks into the ceiling, and dangle the extension overhead.   The deluxe approach, of course, is to mount a floor receptacle, with suitable support and foot-traffic-capable cover. Search on "Hubbell floor receptacle" for examples.

Adrian Caspersz <email@here.invalid>: Apr 02 09:41AM +0100 On 30/03/2021 15:43, Hem Jung wrote: > has caught it a couple of times, so not very good if I keep it the way > it is.  I see flat extension cords online, but price is too high.  Maybe > I could make one?  Thanks in advance.   What Power (Watts/VA), Current (Amps) is the "something pretty?" Exactly what distance to the wall outlet?   Does it have a wall wart adaptor? If it does, you could extend the output of that, with a different lighter cable - though you may lose power over an excessive length.   If you have walls that are plasterboard, fishing cables through them isn't too much work. You might have closer power on the other side of them.   -- Adrian C

Stu jaxon <stankowalski02@gmail.com>: Apr 01 11:04AM -0700 Hi Group, need help identifying a blown IC. it's on Vizio e550-b2, power supply board # DPS-167DP ,.. Board locator # ic901, it has 7 pins, and the top is blown away.??

Adrian Caspersz <email@here.invalid>: Apr 01 07:33PM +0100 On 01/04/2021 19:04, Stu jaxon wrote: > Hi Group, need help identifying a blown IC. it's on Vizio e550-b2, power supply board # DPS-167DP ,.. Board locator # ic901, it has 7 pins, and the top is blown away.??   You missed an 'I'   Googling is remarkably effective with the right input.   e550I-b2 ic901   e.g.   https://www.badcaps.net/forum/showthread.php?t=79046   https://www.badcaps.net/forum/showthread.php?t=70423   Apparently a LD7913JGM6, a PWM controller?   -- Adrian C

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