Path: ...!Xl.tags.giganews.com!local-3.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Sun, 02 Feb 2025 21:21:45 +0000 From: Joe Gwinn Newsgroups: sci.electronics.design Subject: Re: Miraculous button makes things work again. Date: Sun, 02 Feb 2025 16:21:43 -0500 Message-ID: References: <36cqpjphdimf9uq5fjt17cv0q9ns0jtmnc@4ax.com> <0seqpj5sqk5ul7r3qe4e09st6s1nkt7s3r@4ax.com> <9nbrpjhrt9pi78lki77c332h0d0d9n84o5@4ax.com> <8ahspj1cp48ipe43lahmnbe9hehuilfgoi@4ax.com> <4kavpjt07l9gce7e3eharfeskbugjcv8bf@4ax.com> User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 248 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-YxRBZb4pOuQtgYzl9cpqkjNQJ8Y7SiLgY7Gr4u4blrW98BmxifbeXCTSHmWl6X4LCu9FtQC1I/wCmbU!e+Ol0s3ZsKLWnHdcZaFnb2FRxdugZOMp9jMnLz5V3O7hGn3XKSmS21yCJIYq3MRtKg== X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 12061 I may have identified the C8H8O3 compound. Wintergreen Oil fits the bill. .. Method 3 .. .. I'm betting that the rubber restorer is one guy who read the WikiHow article. Joe Gwinn On Sun, 02 Feb 2025 13:43:18 -0500, Joe Gwinn wrote: >On Sat, 01 Feb 2025 18:19:53 -0800, Jeff Liebermann >wrote: > >>On Sat, 01 Feb 2025 18:39:11 -0500, Joe Gwinn >>wrote: >> >>>On Sat, 01 Feb 2025 09:57:51 -0800, Jeff Liebermann >>>wrote: >>> >>>>On Sat, 01 Feb 2025 11:07:18 -0500, Joe Gwinn >>>>wrote: >>>> >>>>>Very interesting in general, and I just bought a Brother MFC-L8905CDW. >>>>>Have you encountered any of those yet? >>>>> >>>>>What the above replaced was an ancient Brother MFC-9840CDW, and I did >>>>>have and repair many problems, and got 15 years out of it. >>>> >>>>I retired from the daily grind just after the CZU fire and Covid. I >>>>currently don't see many repairs on larger and heavier printers >>>>because I would need to carry the printers up and down 50 stairs to >>>>work on them. I also don't have the necessary bench space available. >>>>My current customers are mostly home users who normally don't need or >>>>purchase big and heavy business class printers. >>> >>>I tend to buy the industrial stuff, but at their lower end, because >>>the extra expense is worth it for better quality. >> >>For printers, I buy new printers for my customers and inherit their >>previous printer for free or at least a substantial discount on my >>labor charges. > >Here I am both customer and tech. > > >>An industrial printer is what's used for commercial production >>printing. These are well above the needs of the typical small >>business. > >Yes, and these cost tens of thousands of dollars minimum. Only large >companies have these. > > >> For example, what small business needs a printer that can >>continuously print bills, promotional literature, tickets, etc all day >>long? Running a business class printer continuously like that would >>kill it rather soon. At this time, business class can perhaps print >>25,000 pages before requiring all the plastic and rubber parts need to >>be replaced. > >That would be a the all-plastic wonders. I've gotten far more from >the Brother, and from the legacy HP printers that proceeded it. > >My first laser was a HP LaserJet 5MP bought in 1996 for about $1K, as >I recall. It needed few repairs, although I did upgrade the memory to >max when that became cheap. I finally recycled it circa 2015. It >still worked, but with crippling limitations, like inability to handle >most modern print file formats. And sunlight had made some critical >plastic components to become brittle and crack. > > >> I've maintained ancient LaserJet 4 and 4 Si printers, >>which printed about 125,000 pages before needing any major service. >>Yes, that would be nice for home use, but certainly overkill. HP and >>others realized that such a long life printer would not be a good >>thing for a company that made and sold printers, so they redesigned >>the stamped steel tank of a printer into a lower cost but shorter life >>all plastic toy. > >Yes. But I've found the Brother units quite suitable. Also, this is >not just a printer, it's an all-in-one units. > > >>>Sometimes the industrial stuff is cheaper as well. Like for instance >>>metro wire shelves. >> >> >>I have several rows of those shelves (on rollers) in what used to be >>my bedroom. When I retired and closed my formerly palatial office, >>all the storage racks and most of the junk on them, were transported >>intact into my house. The #1 project for the last 4 years has been to >>purge the junk and get rid of the industrial warehouse decor. >> >>>And one of my selection criteria was weight, with heavier preferred >>>(meaning more metal and less plastic). >> >>As I get older, cost has become the primary criteria. I don't expect >>or want to live longer than my furniture and toys. > >I also won't have the energy or maybe ability to do much repairing as >I get grayer and grayer. > > >>>>I haven't worked on any MFC-L8905CDW printers but have recently >>>>cleaned a similar model after an aftermarket toner cartridge dumped >>>>toner everywhere. I didn't see anything unusual when I tested it. >>>> >>>> >>>>The old MFC-9840CDW (discontinued) was not a good printer. >>>> >>>>Two of my customers bought them many years ago. As I vaguely recall, >>>>the colors did not print true, the color self-calibration didn't quite >>>>work, and I had to clean toner from the belt with almost every >>>>cartridge change. >>> >>>The color was never all that good to be sure, but it was good enough >>>for me. Nor did I clean the belt all that often. >> >>I'm told that it is possible to get descent color from the Brother >>MFC-9840CDW. However, it requires tearing it apart and cleaning the >>toner dust off the color calibration optics and sensors. > >Ahh. So that's why. Wonder if Brother has improved that part of the >design. One assumes so, after 15 years. > > >> To maintain >>the color settings, don't let loose toner collect inside the machine, >>especially around the waste box. >> >>Notice that waste toner box is only good for: >> Page volume: Approximately 20,500 pages with 5% coverage. >>As you approach this limit, clean out the waste toner box or you will >>soon be dealing with a big mess. (Clue: Nobody does this until it's >>too late). > >Hmm. The 9840 started to complains about that, so I dutifully >replaced the waste toner box well in time. > > >>>> I don't recall any component failures or >>>>replacement. The rubber parts, which are usually the first to die, >>>>held up well, mostly because the printer was lightly used. >>> >>>It worked well for many years, but it developed problems as it became >>>elderly. In all cases, the underlying problem was that some rubber or >>>plastic component had aged and become glazed. Disassembly and >>>cleaning with a fiberglass brush followed by ethanol wiping helped a >>>lot. The famed "Stable 32" error was fixed by a carefully placed >>>piece of mylar tape that prevented sticking. >> >>Ummmm... I think you mean "Print Unable 32" error message. The means >>you have either paper, or more likely labels, stuck on the rollers or >>drum. If it's the fuser roller or imager drum, and you get anywhere >>near them with any kind of cleaner or solvent, you'll destroy the >>coating. Don't ask me how I learned this fact. Even isopropyl >>alcohol is to strong. Instead, I use hot water, to melt the stick >>label glue or scrape off the glue with a Teflon kitchen scraper. > >Yes, its "Print Unable 32". I don't print labels or the like. Or >envelopes. Too much trouble. > > >>I won't say anything about resurfacing the roller using mylar tape >>except that I've never tried it, don't think it will work, and have no >>intention of trying it. > >The piece of tape was on a location sensing pad of some kind; don't >recall where. The rollers I was resurfacing were made of rubber of >some kind, and were not destroyed by this treatment. ========== REMAINDER OF ARTICLE TRUNCATED ==========