- Fluke schematics/service manual - 1 Update
- Dell Inspiron 1545 laptop- wired ethernet nonfunctional - 5 Updates
| "ohg...@gmail.com" <ohger1s@gmail.com>: Oct 11 12:38PM -0700 I have a chance to buy a Fluke 289 "as-is" for a hundred bucks U.S., but before I buy it, wonder if a schematic is available for it. I sent Fluke an email and they sent me the calibration manual which, according to Fluke, included the schematics, but the calibration manual is just a calibration manual. Are Fluke schematics available? Also, are application specific parts like custom ICs available? Thanks for any insight. |
| wAYNE <wayne34@no_verizon.net>: Oct 11 01:10PM -0400 I have been using a Dell Inspiron 1545 for years at home. For Internet, I've always used the wired connection via cat5 cable to the router without issue, that is until recently. This morning, I seemed to not be able to make the connection. Since I am using a dual boot system, either Ubuntu or Win10 at startup, I decided to boot into Win 10 and experienced the same symptoms. On Ubuntu 22.04, there is a question mark in place of the normal connection icon. On Win, no network connection. I recently changed out the motherboard in the 1545 and for several days, the wired connection was working fine without issue. To test if I could connect via WiFi, I enabled that in the laptop and the router. I normally use nothing but wired connections at home, so had to create and enable the connections for both items. The laptop connects to the Internet fine by Wifi with no issues. What could be causing the unsuccessful wired connection? Thanks in advance. |
| "Peter W." <peterwieck33@gmail.com>: Oct 11 10:45AM -0700 On Tuesday, October 11, 2022 at 1:10:30 PM UTC-4, wAYNE wrote: > I have been using a Dell Inspiron 1545 for **years** at home. For Internet, > I've always used the wired connection via cat5 cable to the router My S.W.A.G. is that the connector is worn out. Keeping in mind that the laptop makers expect that most users keep their devices for only a very few years, and never move them, it is no surprise that a connector would have worn out under the conditions you describe. Peter Wieck Melrose Park, PA |
| wAYNE <wayne34@no_verizon.net>: Oct 11 02:12PM -0400 On 10/11/22 1:45 PM, Peter W. wrote: > My S.W.A.G. is that the connector is worn out. Keeping in mind that the laptop makers expect that most users keep their devices for only a very few years, and never move them, it is no surprise that a connector would have worn out under the conditions you describe. > Peter Wieck > Melrose Park, PA Hmmm. Well, the motherboard was swapped out for a refurbished one. I suppose it's possible that the connector may be bad, although I doubt whoever used it before probably used it wired like I have for years. Is there a chance that it might be some sort of corrosion or oxidation from NON use? Anything I could try spraying into the connector or applied to it for a test? |
| "Peter W." <peterwieck33@gmail.com>: Oct 11 11:55AM -0700 > Is there a chance that it might be some sort of corrosion or oxidation from > NON use? Anything I could try spraying into the connector or applied to > it for a test? Generally, look at the end of the connector. If the little wires inside are not even, clean and show even small signs of corrosion, then the connector(s) are likely bad. Have you changed the cable? Note that the bad connection could be in the cable or in the modem/router. And, check the board. That jack may have been strained at some point and broken a solder connection - especially if there are cats/dogs/small children involved. I would very much hesitate to spray anything at all into a jack - as anti-corrosives such as DeOxit continue to react until all the materials have been 'used up' - which could do considerable and fatal damage to a mother-board. If you are _EXCEEDINGLY_ careful, you might try 91% (or more) alcohol on a small brush or small cotton swab - but the potential for collateral damage is high without that extreme care. If the jack in the computer is on a smaller daughter-board, you might try removing it, and then plugging it back in. This reads as a mechanical fault as the computer does behave 'as normal' on WiFi. Unless, of course, something got spiked recently. Any surges from your power? Peter Wieck Melrose Park, PA |
| wAYNE <wayne34@no_verizon.net>: Oct 11 03:02PM -0400 On 10/11/22 2:55 PM, Peter W. wrote: > This reads as a mechanical fault as the computer does behave 'as normal' on WiFi. Unless, of course, something got spiked recently. Any surges from your power? > Peter Wieck > Melrose Park, PA I tried using a modified pencil eraser over the connections and, no, they didn't look out of place or corroded as far as I could tell. Yes, I tried switching out the cables to known good ones to no avail. Since the charger board, which contains the USB, charger and ethernet ports can be removed and replaced, I have another one here I could try or simply order a known good one. I've been wanting to try one anyway since I have another laptop here that won't respond as I have been suspecting the charger board. Thanks for the tips, however. |
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