- What use is WiFi on a Costco Viso TV? - 6 Updates
- Power supply for USB to SATA adapter smoked on first use. - 4 Updates
| Ewald Böhm <ewvesb@gilltaylor.ca>: Sep 03 11:16AM What use is WiFi on a TV screen? A relative of mine called, who was told "something" by Costco, that their Visio TVs have WiFi and therefore she wouldn't need the "box" whatever that is. I don't have cable, nor even a TV, but I suspect that "box" is something that was added when they switched from Analog to Digital (or maybe it's a descrambler). They said they have to pay the cable company for a second box (the first one is free), so, it's not a modem (because you'd only need one modem). Anyway, my basic question, for you, is "what use is WiFi in a TV"? Note that I can easily see that bluetooth is useful, since you can then use that TV with a keyboard; but what good is WiFi in a TV screen at home? |
| "taxed and spent" <pleasedonot@spamme.com>: Sep 03 04:47AM -0700 "Ewald Böhm" <ewvesb@gilltaylor.ca> wrote in message news:ms9a6k$4ho$1@news.mixmin.net... > Anyway, my basic question, for you, is "what use is WiFi in a TV"? > Note that I can easily see that bluetooth is useful, since you can then > use that TV with a keyboard; but what good is WiFi in a TV screen at home? so you can connect to the internet and watch Youtube, netflix, etc. |
| Ewald Böhm <ewvesb@gilltaylor.ca>: Sep 03 02:08PM On Thu, 03 Sep 2015 04:47:02 -0700, taxed and spent wrote: > so you can connect to the internet and watch Youtube, netflix, etc. Maybe I don't understand. Actually, I don't understand. To watch youtube, you need a browser, which is usually a program compiled for a certain computer, which runs a certain operating system, and which has a certain byte order and memory structure and a whole bunch of other things associated with a "computer". Is the TV acting as a "computer"? If so, what operating system is the TV? What browser does it use? What architecture is that TV browser compiled for? |
| "Ralph Mowery" <rmowery28146@earthlink.net>: Sep 03 10:21AM -0400 "Ewald Böhm" <ewvesb@gilltaylor.ca> wrote in message news:ms9k8e$dk$1@news.mixmin.net... > If so, what operating system is the TV? > What browser does it use? > What architecture is that TV browser compiled for? The newer smart TVs have their own built in inerface . Maybe you have heard of the devices like ROKU or the one from Amazon. Anyway it lets the TV connect to the internet so if you have say Direct TV you can get movies and other shows on demand bystreaming off the internet. I don't know what system they use,but my TV lets me surf the web. It is awful slow to do with the remote,but I think I could hook up a mouse and keyboard to it if I wanted to. |
| Michael Black <et472@ncf.ca>: Sep 03 11:38AM -0400 |
| "Edmund J. Burke, Ph.D" <dingdone@chinacamp.org>: Sep 03 09:39AM -0700 "EwaldBöhm" wrote in message news:ms9a6k$4ho$1@news.mixmin.net... Ewald? LOL |
| "David Farber" <farberbear.unspam@aol.com>: Sep 02 06:41PM -0700 I bought this item last year. www.ebay.com/itm/331250999094 I didn't have an occasion to use the power adapter until last month when I had a SATA notebook drive to check. (When I bought it, I was mainly interested in the PATA adapter which does not require the separate power supply as the power is derived through the USB port.) I had everything wired to go when I plugged in the AC cord into the adapter. Kaboom and poof. I saw a nice spark from the AC terminals as it first made contact with the adapter. I remembered when I purchased it and did some research into the feed back of the seller and found a few similar comments like this: "Plugged In..Smoked..Almost Caught Fire..Garbage..BEWARE!!!!!!!!!!!!!!!!!!!!!!!!! Buyer: USB 2.0 to IDE SATA S-ATA 2.5 3.5 Hard Drive HD HDD Converter Adapter Cable New (#331250999094) US $8.75" I think if someone else reported this happening, then this must be happening often. Before I opened the case of the power box, I could hear what sounded like a part rattling inside. I think it what was left of the fuse. Inside there was a component labeled F1 on the pc board except all that was left were the two pico(?) fuse terminals (maybe it was just a thin jumper wire?). I also found that the pc traces had melted near the AC input. It didn't take long to find three of the four bridge diodes were shorted (I removed them from the board to check for other shorts as shown in the photo) as well as the switching power transistor, and a 0.22 resistor in series with it. The photo is here. http://webpages.charter.net/mrfixiter/images/Electronics/Sata_adapter/PC-board-sata-adapter.jpg I decided to contact the seller and let them know that their device was a fire hazard. I'm fairly certain that the internal fuse is supposed to blow before the pc traces melt. I got a response that offered me a free replacement even though it was more than a year old. I took them up on their offer and have received the replacement which I haven't plugged in yet. (When I do, it's going to be in a series with 60 watt light bulb!) The issue of it being a fire hazard wasn't address by the seller. I looked for some kind of government approved sticker but did not find one. Would it make any sense or would it be just a waste of time to make some kind of consumer report about this device? How large a fuse would have to be in the circuit to allow the traces to burn up? Thanks for your reply. -- David Farber Los Osos, CA |
| Jon Elson <elson@pico-systems.com>: Sep 02 09:14PM -0500 David Farber wrote: How large a fuse would have to be in > the circuit to allow the traces to burn up? The problem is, except for very special energy-limiting fuses, the fust does NOT limit the current before it blows. It allows whatever current the unit will draw for some amount of time before blowing. So, it is possible for even a 1A fuse to allow fairly thick circuit traces to burn through when the device has a dead short. It would not be unusual for a 1 A fuse to allow maybe 100 A in a dead short situation, for a few milliseconds. Jon |
| mike <ham789@netzero.net>: Sep 02 10:43PM -0700 On 9/2/2015 7:14 PM, Jon Elson wrote: > device has a dead short. It would not be unusual for a 1 A fuse to allow > maybe 100 A in a dead short situation, for a few milliseconds. > Jon I haven't done any UL certification in over two decades, but I expect that the test REQUIRES that the traces don't fuse before the real fuse. It's widely suggested that chinese crap doesn't test for anything. They just slap on a fake sticker and sell it cheap. Cuz that's what we cheapskates want...cheap... |
| Phil Allison <pallison49@gmail.com>: Sep 03 05:10AM -0700 Jon Elson wrote: > will draw for some amount of time before blowing. So, it is possible for > even a 1A fuse to allow fairly thick circuit traces to burn through when the > device has a dead short. ** The thin wire of a 1A fast fuse would normally melt and open well before a PCB track a few mm wide can do so. > It would not be unusual for a 1 A fuse to allow > maybe 100 A in a dead short situation, for a few milliseconds. ** What happens with large overloads, like 100 times, is the fuse wire vaporises and initiates an arc from end to end of the fuse. Such arcs show negative resistance and so are very destructive - substantial copper tracks and wires vanish instantly until another fuse link or breaker trips. Of course, special fuses types exist that can handle fault currents of thousands of amps without arcing - microwave ovens and Fluke DMMs use them, but not small appliances. ... Phil |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 10 updates in 2 topics"
Post a Comment