- SOLVED: How to list all devices on the Windows or Linux home network - 2 Updates
- Transformer shot! (was scope SMPS/ capacitor venting) - 10 Updates
- HP laserjet experts Help! - 6 Updates
- Unsolderable wire? - 2 Updates
- LED Christmas lights have a series lump, what is it for? - 1 Update
- which battery for my UPS?? - 1 Update
- Circuit Diagram for TV CVB42001 Power Supply Board - 3 Updates
Anda Lucite <andalucite@andalucite.net>: Feb 22 12:11AM Whiskers wrote in message slrnncjit5.qb.catwheezel@ID-107770.user.individual.net > there may already be a 'build' of the tarball for your distro (possibly > in the 'testing' or 'user-contributed' or other 'unofficial' > repositories). Thanks Whiskers for figuring out how to finally list all the devices on the network from the desktop/laptop computer. https://www.fingbox.com/download This worked: $ wget "https://www.fingbox.com/download?plat=lx64&ext=deb" $ mv "download?plat=lx64&ext=deb" fing_lx64.deb $ sudo dpkg -i ./fing_lx64.deb $ sudo fing -n 192.168.1.0/24 -r 1 Here is the result on the unrooted mobile phone: https://i.imgur.com/XsnyHJx.gif Here is the result on the desktop/laptop: --------------------------------------------------------------- | State | Host | MAC Address | Last change | |-------------------------------------------------------------| | UP | 192.168.1.1 | 84:1B:5E:CC:A3:FF | | | UP | 192.168.1.2 | 5C:0A:5B:C4:22:51 | | | UP | 192.168.1.3 | 00:18:61:00:A4:CE | | | UP | 192.168.1.4 | 00:1F:3B:AA:D0:4A | | | UP | 192.168.1.5 | 40:B0:FA:88:33:A1 | | | UP | 192.168.1.8 | 40:B0:FA:88:33:A1 | | | UP | 192.168.1.9 | F8:D0:AC:DD:5A:FF | | | UP | 192.168.1.10 | 00:14:22:FF:56:31 | | | UP | 192.168.1.11 | 00:80:05:AA:43:55 | | | UP | 192.168.1.116 | 00:10:83:00:8A:FF | | | UP | 192.168.1.200 | 00:16:B6:53:66:91 | | --------------------------------------------------------------- These failed to report *all* devices (hence they're useless): $ sudo netdiscover -i wlan0 -r 192.168.1.0/24 $ sudo arp-scan --interface=wlan0 --localnet Now we finally have a way to list *all* the devices on the network! |
William Unruh <unruh@invalid.ca>: Feb 22 12:13AM > $ sudo netdiscover -i wlan0 -r 192.168.1.0/24 > $ sudo arp-scan --interface=wlan0 --localnet > Now we finally have a way to list *all* the devices on the network! Of course it is also a closed source program, as far as I can see, so for all we know, it reports all those devices back "home" |
Dimitrij Klingbeil <nospam@no-address.com>: Feb 21 06:27PM +0100 On 20.02.2016 15:36, JC wrote: > ... In one of your pictures there are a couple of diodes that look > messed up (V1809 and V1811) near the bridge. They are supposed to be > BY208-1000 (1000v rectifiers), I can see "40" on one, maybe 1N4007? Well, if that is true then beware! V1808, V1809 and V1811 are supposed to be very fast. Any slow (more than a microsecond) diode in these positions will likely cause symptoms akin to a heavy overload. Particularly V1811, if replaced with any 1N400x, is likely to render the energy recovery circuit around L1806 as good as inoperative, thereby dumping the entire energy from the switcher harmonics into R1814, which will cause it to overheat fast. Please recheck L1806 (both windings) for turn-to-turn shorts (with a signal generator), and if any of the 3 diodes (V1808, V1809, V1811) looks like it had previously been replaced (possibly improperly replaced), consider replacing all 3 of them together, using the proper parts. Use fast soft-recovery diodes rated for 1kV here. If you can't find any, use ultrafast ones. They're maybe not optimal from an EMI standpoint here, but at least they should work well enough for testing. If you can't find a BY208-1000 replacement, a MUR4100E should work. Check C1806 for dielectric breakdown. It should be able to withstand at least 500 V (or something in that ballpark). If it doesn't, replace. Don't underestimate that L1806 energy recovery circuit. Although it doesn't by itself transfer any power to the load, this supply heavily relies on it for proper resonant operation of the main transformer. It must be working properly before you can test the main transformer waveform and have any chance of making correct measurements. Besides, your description of heavy switching noise on V1806 (when you tried to measure the base drive waveform), up to the point of the waveform being unrecognizable in the noise, seems to indicate that the L1806 circuit is shorted at high frequencies. This can be a result of either a winding short in L1806 or a breakdown in one of its diodes or some of these diodes being replaced by a generic slow silicon diode. Dimitrij |
Dimitrij Klingbeil <nospam@no-address.com>: Feb 21 07:36PM +0100 On 20.02.2016 13:55, Cursitor Doom wrote: > 0.17ohms, 0.26ohms, 0.28ohms, 3.7ohms, 3.8ohms. So this doesn't seem > to tally up with the schematic. Or does it? I need a pint of strong > coffee to kick-start my head on this one. :-/ Anyway, later... Hi As you say, this really doesn't tally up. The ratios look ok (see my other post), but the absolute values are obviously junk. After all, Ohm's law still holds, even for reactive impedances, and 60 volts divided by 3.7 Ohms is 16 amps, which would be WAY too much for a small transformer winding's magnetization current. That would indicate very heavy overload, most probably due to a short circuit inside one of the windings. But there's something that makes me distrust those impedance numbers - and that is your use of 100 kHz as the testing frequency. First of all, did you really use 100 kHz as written? Most LCR meters have 100 Hz, 1 kHz, 10 kHz and 100 kHz signals. Did you perchance use the 100 Hz one instead? 100 Hz would be so low that the inductive part might not even register properly. Second, 100 kHz is not a good choice. The reason for this is the self-resonance frequency (SRF) of your transformer. All coils and transformers in the real world are not just coils, but LC circuits. The L part is (obviously) provided by the winding itself and the C part is the stray capacitance between the wires in the winding. Being really an LC circuit, a winding has a resonance frequency, like any "true" LC circuit would have. This is called the SRF of the winding. To make matters worse, a transformer that has multiple windings wound with different geometries and wire diameters has multiple SRFs, one for each winding. Windings with few turns of loosely packed thick wire have high SRF values, while windings with many turns of densely packed thin wire will have much lower SRFs. Your particular transformer has 2 high-voltage windings for the kV outputs. They have lots of densely packed thin wire, so their SRFs will be very low. I don't know exactly how low, but I'm sure that they will be much lower than 100 kHz, and that's what makes 100 kHz an unsuitable choice for testing. If fact, if you try to operate a winding above its SRF (let's say the winding has a 20 kHz SRF and you try to apply 100 kHz), then the winding will no longer behave like an inductor, but it will behave like a capacitor instead. I know, this seems crazy, but that's how a winding behaves above its SRF. In a transformer, where there are multiple windings, there are also multiple SRFs, so at some test frequency, some windings may happen to be below their respective SRFs, while some other windings may be above their respective SRFs, depending on how you choose the test frequency. If any winding happens to be above its SRF, then it will behave like a capacitor. As you know, capacitors behave more or less like a short circuit at high frequencies, and an above-SRF winding will behave like that too. That is, it will look (from an impedance measurement) like if it was heavily overloaded or even shorted out altogether. So your 100 kHz measurements indicated very low impedances, like some winding was shorted out. But then you also have 2 high voltage windings in there, which would have been way above SRF at 100 kHz frequency, so they will effectively behave like shorted even if they were perfectly fine otherwise. At 100 kHz they're no longer inductors, they're likely just capacitors instead. Now, to test transformer winding impedances, you need to select a reasonable test frequency. It must obviously be lower than any SRF of any winding - otherwise the transformer will appear overloaded. If you don't know the SRFs' values, you can measure them out with a signal generator and an oscilloscope. But you don't need to. Normally no transformer is operated above its SRF (it would not work very well if one tried), so you can assume the normally intended frequency of operation to be a "safe" choice that is unlikely to hit SRF limits. Your transformer is probably supposed to run at something like 20 kHz in normal resonant operation, so 20 kHz should be ok. But because it has high voltage windings, it may be very close to the HV winding's SRF. Indeed Philips engineers may even have chosen to run the transformer not below, but essentially right at SRF. They may have selected the resonance capacitors for the primary in such a way that the primary (together with the resonance capacitors) would have a resonant frequency which closely matches the self-resonance of one of the high voltage windings, being just a little bit below to account for tolerances. If that's the case, you should use a lower frequency for testing impedances. Most LCR meters don't offer 20 kHz anyway, just 10 kHz and 100 kHz as "nearest neighbors". 100 kHz won't do, so use 10 kHz. That should give you realistic impedances (which you can manually multiply by 2 to get to the in-circuit conditions). Regards Dimitrij |
Dimitrij Klingbeil <nospam@no-address.com>: Feb 21 08:09PM +0100 On 21.02.2016 18:27, Dimitrij Klingbeil wrote: >> 1N4007? > If you can't find a BY208-1000 replacement, a MUR4100E(G) should > work. Sorry, that may be physically too big to fit. A MUR1100EG or something similar should work and fit in the available space too. Dimitrij |
Cursitor Doom <curd@notformail.com>: Feb 21 08:46PM On Sun, 21 Feb 2016 19:36:29 +0100, Dimitrij Klingbeil wrote: [...] > have 100 Hz, 1 kHz, 10 kHz and 100 kHz signals. Did you perchance use > the 100 Hz one instead? 100 Hz would be so low that the inductive part > might not even register properly. Yes, definitely 100kHz. Not my preferred choice, but the only option given the meter I used which was actually a capacitor ESR meter. [SRF remarks noted] > they will effectively behave like shorted even if they were perfectly > fine otherwise. At 100 kHz they're no longer inductors, they're likely > just capacitors instead. Very good point. I admit I never considered that possibility. > 100 kHz as "nearest neighbors". 100 kHz won't do, so use 10 kHz. That > should give you realistic impedances (which you can manually multiply by > 2 to get to the in-circuit conditions). Yes, it might be illuminating to sweep a range of frequencies and note any resonances, I can see the value of that. Unfortunately, an LCR meter is one item of test equipment I don't have, so it would have to be sig gen and scope in combination. Anyway, it's do-able. Many thanks for your observations as always. |
Cursitor Doom <curd@notformail.com>: Feb 21 08:59PM On Sun, 21 Feb 2016 20:09:47 +0100, Dimitrij Klingbeil wrote: > Sorry, that may be physically too big to fit. A MUR1100EG or something > similar should work and fit in the available space too. > Dimitrij Thank you. If you've had the chance to read my follow up to JC (I think it was) then you'll be aware that one of those BY208 diodes was replaced by a BY134. If the design is that critical of the speed of the diodes it uses then maybe it won't function properly as you suggest. I can only imagine the technician who replaced it was unaware of the critical nature of the part concerned. I'm kind of unhappy with this design overall, to be honest. It was critically appraised on s.e.d and found generally unsatisfactory. I'm strongly tempted to just save the transformers, junk everything else and start afresh with a modern design. The rest of the scope is mint and untouched, it's only the psu section that's been butchered around and shows signs of burning and scorching in places. Maybe the best thing to do would be to bin it? :-/ |
JC <Chipbee40_SpamNo@yahoo.com>: Feb 21 04:28PM -0500 On 2/21/2016 3:59 PM, Cursitor Doom wrote: > untouched, it's only the psu section that's been butchered around and > shows signs of burning and scorching in places. Maybe the best thing to > do would be to bin it? :-/ Switching supplies are all designed with the diode (and other component) parameters in mind, its how they function efficiently. Bunging any old diode in is asking for trouble. Same as the ESR and temp rating of the caps used. Seriously you need to sit back and chill. These scopes were very well designed and I would say exceptionally reliable. I'd like to see you build a replacement. I've designed switching supplies, everything needs to be right or it goes wrong fast. FR107G seems to be the current equivalent for the BY208-1000 |
JC <Chipbee40_SpamNo@yahoo.com>: Feb 21 05:13PM -0500 On 2/21/2016 4:28 PM, JC wrote: > see you build a replacement. I've designed switching supplies, > everything needs to be right or it goes wrong fast. > FR107G seems to be the current equivalent for the BY208-1000 FR107G Ebay (UK) #390565307743 cheap enough. |
Cursitor Doom <curd@notformail.com>: Feb 21 10:15PM On Sun, 21 Feb 2016 16:28:50 -0500, JC wrote: > see you build a replacement. I've designed switching supplies, > everything needs to be right or it goes wrong fast. > FR107G seems to be the current equivalent for the BY208-1000 Well, the modern ones may well be super reliable, but this old thing is very dated and shows many signs of its age and the scars of previous faults and questionable repairs. I wouldn't attempt another resonant converter; there must be something simpler with fewer critical parameters, surely. |
Cursitor Doom <curd@notformail.com>: Feb 21 10:36PM On Sun, 21 Feb 2016 17:13:55 -0500, JC wrote: >> everything needs to be right or it goes wrong fast. >> FR107G seems to be the current equivalent for the BY208-1000 > FR107G Ebay (UK) #390565307743 cheap enough. Thank you, JC. You and Dimitrij have both given me some subs for suitable replacements which I'm quite happy to go along with. But I'm not prepared to spend much more time on this repair, to be honest. I'd relish the prospect of a comprehensive re-design. Even if it's beyond me at this stage I'd learn a lot from it. |
Dimitrij Klingbeil <nospam@no-address.com>: Feb 22 12:52AM +0100 On 21.02.2016 21:59, Cursitor Doom wrote: > untouched, it's only the psu section that's been butchered around and > shows signs of burning and scorching in places. Maybe the best thing > to do would be to bin it? :-/ Hi As for the BY134, sorry, I must have overlooked that somehow, or maybe it did not register in my memory right away. Anyway, it's just as bad a choice as a 1N4007 and its ilk. It's designed for mains rectification and doesn't even make an attempt at being fast. No use in an active snubber or energy recovery circuit whose task it is to "strip out" the high frequency components from a square wave. Get rid of it, and while you're at it, consider the condition of the other two (V1808+9) identical ones. Sometimes a person who does an improper repair will try swapping nearby components hoping that another one might be "less critical". So if you see signs of unprofessional manual soldering on them, take that whole trinity and replace them. Same with C1806. If it looks suspicious, does not pass a withstand test at some 105% of its rated voltage or shows high ESR, change it too. BY208-1000s are hard to come by nowadays, so here is a list of some more modern candidates: MUR1100E, BYV26E, UF4007. They should fit, and even though they are faster than the original BY208-1000, they should work. There are also: RGP30M (slightly large, modest speed), UF5408 (slightly large), MUR4100E (slightly large), STTH112U (smd), US1M (smd) BYG23M (smd). They may or may not fit due to size and space constraints, and the SMD ones would likely need some wire leads soldered on (won't look professional, but hey, if others are too hard to come by, that's ok). Once you've fixed that botched repair on the energy recovery circuit, connect a taillight lamp to the 12.7 V output, test it again and tell your results here (make sure you put all the proper parts back in, before you switch it on, this supply may be unforgiving if any parts are missing and it's powered on). As for the design being "generally unsatisfactory", let me disagree. Resonant converters do have a well earned place in the world of power electronics, but the design of them is, in a way, a black art. They have lots of pitfalls for the unwary and not so many engineers can actually design them properly and they tend to use special components (inductive ones in particular) that would be rather unsuitable for other topologies too. Yet they do have certain benefits, low noise operation that is suitable for sensitive measurement instruments, being one of them. They are not so easy to understand, compared to "simple" flyback topology supplies - so people go screaming "this is too complex" or "this uses too many parts". In fact your supply's energy recovery circuit is actually a little unregulated flyback converter of its own! But so far (and considering the design's day and age), all the parts that I've seen in that schematic seem to me to have a good reason for their existence. Greetings Dimitrij |
"Andy Wood" <woodag@trap.ozemail.com.au>: Feb 22 07:03AM +1100 "Clifford Heath" wrote in message news:a4dyy.9156$Nf2.4984@fx14.iad... . . . >is coated with something very slick, perhaps PTFE. The thermo switch is >just an on-off bi-metal thing that rides against the fuser tube - with >surprisingly little signs of wear on the ones I took apart. When I got "fuser error" on an ancient mono HP Laserjet, I also found that fusers were expensive, although I did also turn up some place that sold replacement heating elements. For that model, there was a ceramic element and a thermistor in the fuser. However, my tests and measurements showed no obvious problem with the fuser and I came to the conclusion that the problem was in the controller board. I established that power was getting supplied to the heater, but ended up replacing the control board with one from another printer which itself was actually working but had seen a lot more use than the first one. For the record, the repaired Laserjet still works today - it is way over 20 years old now. |
Jeff Liebermann <jeffl@cruzio.com>: Feb 21 12:16PM -0800 On Sun, 21 Feb 2016 17:22:31 +1100, Trevor Wilson >* Service data source? <http://www.FixYourOwnPrinter.com> <http://www.fixyourownprinter.com/?printer_brand=9&printer_series=61&printer=1988&Search=Search> <http://support.hp.com/us-en/product/HP-Color-LaserJet-3000-Printer-series/501044/model/501046/manuals> <http://www.PrinterWorks.com> <http://www.lbrty.com> <http://partsurfer.hp.com> <http://partsurfer.hp.com/Search.aspx?type=PROD&SearchText=Q5987A> Service Manual: <http://support.hp.com/us-en/product/HP-Color-LaserJet-3000-Printer-series/501044/model/501046/manuals> There are also dealers on eBay selling manuals on CD or download. >* Can the fuser be repaired? The cost of a fuser here in Australia is >astronomical? Yes, it can be repaired with a rebuild kit. <http://www.ebay.com/sch/i.html?_nkw=hp+color+laserjet+fuser+rebuild> The rebuild kits do NOT include a heater and are therefore indpendent of line voltage. If you've never done it before and/or lack specific instructions, I suggest you go for a rebuild or exchange fuser instead. <http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c00508146> For 220VAC the fuser PN is RM1-2743-000 For 117VAC the fuser PN is RM1-2665-000 >* Is the fuser a 230VAC one (Australia is a 230VAC nation), or can I >just buy a new fuser (or re-built one) from eBay? That's NOT an either-or type choice. Yes, you can buy a rebuilt fuser on eBay, but it has to be 220VAC type for AU. >* I assume there is some kind of feedback system (NTC or PTC element) >and that is what has failed, rather than the heater (the fuser still >gets hot)? If the temperature sensing circuit has had a failure, you'll get an error message on the display during boot up. There is also an overtemp thermostat to prevent meltdown. The usual failures that I see are hardened toner buildup on the fingers that peel the paper away from the fuser roller, a fried fuser film sleeve, and worn gear teeth. >Any suggestions will be welcome. After spending almost 300 Bucks on >toner, I am keen to keep this sucker going for another few years. I'd >prefer not to spend 500 Bucks on a new fuser though. $500 for a fuser is far too much. <http://www.amazon.com/s/?ie=UTF8&keywords=hp+3600n+fuser> No clue about AU prices. For 220VAC, email the vendor. Most rebuilders carry both voltages or can possibly swap out the heater element. -- 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 |
Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: Feb 22 07:56AM +1100 On 22/02/2016 7:16 AM, Jeff Liebermann wrote: > No clue about AU prices. For 220VAC, email the vendor. Most > rebuilders carry both voltages or can possibly swap out the heater > element. **Awesome! Thanks for the info and the links. -- Trevor Wilson www.rageaudio.com.au --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
"Kenny" <me@privacy.net>: Feb 21 09:21PM "Trevor Wilson" wrote in message news:diumjqFccshU1@mid.individual.net... On 22/02/2016 7:16 AM, Jeff Liebermann wrote: > No clue about AU prices. For 220VAC, email the vendor. Most > rebuilders carry both voltages or can possibly swap out the heater > element. **Awesome! Thanks for the info and the links. -- Trevor Wilson www.rageaudio.com.au --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus Hope this helps: http://ridl.cfd.rit.edu/products/manuals/HP/HP_LaserJet_3000_3600_3800_Series_Service_Manual.pdf Kenny Cargill |
Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: Feb 22 10:05AM +1100 On 22/02/2016 7:16 AM, Jeff Liebermann wrote: > No clue about AU prices. For 220VAC, email the vendor. Most > rebuilders carry both voltages or can possibly swap out the heater > element. **Looks like my only solution is this: * Buy a replacement fuser and hope that is the only fault. Cost will exceed AUS$300.00. * Buy a new printer. I found a multifunction device from HP, which would do the job. Model MFP M177FW. RRP AUS$329.00. For a few more Bucks (about AUS$300.00), I could buy a Dell C2665dnf. Thoughts? There's a Samsung in the mix, but I purchased a Samsung a couple of years back. Atrocious POS. A simple paper jam would typically take 30 mins to clear. After owning 4 HP printers, I have always found that paper jams are quickly and easily cleared. I a leaning towards HP for that reason. -- Trevor Wilson www.rageaudio.com.au --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
Jon Elson <elson@pico-systems.com>: Feb 21 05:32PM -0600 Trevor Wilson wrote: > * I assume there is some kind of feedback system (NTC or PTC element) > and that is what has failed, rather than the heater (the fuser still > gets hot)? Ok, if the fuser heater is still working, then find the sensor (there will usually be two, a control thermostat and a safety thermostat). Trace the wires back to whatever board controls the fuser, and reseat the connectors. That may fix it. If not, pull that board and look for crumbling solder joints on the connectors. If nothing there, then dismantle the fuser and check that the sensors still have contact with the fuser roller, aren't covered in melted toner, etc. Then, you have to decide whther to replace the sensors or the control board. And, the most awesome resource is : http://www.fixyourownprinter.com/ They have discussions and instruction on how to fix all sorts of problems. Jon |
"Tim Williams" <tiwill@seventransistorlabs.com>: Feb 21 01:31PM -0600 You're doing it wrong: never wait for dry metal to melt solder opposite the iron. Tin under the iron, so there's thermal transfer. Then go around the braid, spreading the tinned area around it. Mind the core will melt to goo while you're doing this... And as others have mentioned, if it's aluminum or stainless, you're screwed. Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com "Steve" <loft@centurylink.net> wrote in message news:87egc65xql.fsf@centurylink.net... |
John G <john.g@green.com>: Feb 22 10:06AM +1100 Ralph Mowery expressed precisely : >> That just sounds like another excuse to the use the butane torch :) > Most of the rg-6 uses aluminum instead of copper or tinned copper. The > normal methods of soldering will not work on it. I'll believe Aluminium or steel I must admit to only a little actual experience. Some Cable guy should give an actual answer. -- John G Sydney. |
hrhofmann@att.net: Feb 21 02:43PM -0800 I took apart five individual LED Christmas light bulbs, from a string of lights that did not have a "glob" in series with the bulbs. Each of the lights had a really tiny resistor in series with the bulbs. The stripes and body color on the resistors were so small I could not tell which was the body and which were the stripes. My cheap HF multimeter said the actual resistors were 260 ohms. I didn't try to clip lead the bulbs into a working string of lights so I wasn't able to measure the forward drop across the LED diode itself. I will try that later this week when I work on some more LED light strings. Right now my repair shop is working on filament light strings. |
Wayne Chirnside <mark@faux.com>: Feb 21 09:40PM On Sat, 20 Feb 2016 22:18:29 +0000, mroberds wrote: > Standard disclaimers apply: I don't get money or other consideration > from any companies mentioned. > Matt Roberds Best deal I've seen is batterysharks.com Brooklyn N.Y. Power Sonic. I need to grab 5 next month and figure they're reputable enough to take a chance. |
soswow@gmail.com: Feb 21 01:32PM -0800 OK. I see what you mean. But I have problem understand how does PFC or any other logic board would be able to control LED. The only connection power board has with main board via these 6 pin connection. The only interesting bits here are ON/OFF and ADJ. Not sure if any of these would control output of the LEDs power output on other side of the power board: |
Aleksandr Motsjonov <soswow@gmail.com>: Feb 21 01:34PM -0800 Can't find how to attach images here ... Replaying with email failed "Posting by email is not allowed, to post to this group visit https://groups.google.com/forum/#!forum/sci.electronics.repair" |
Aleksandr Motsjonov <soswow@gmail.com>: Feb 21 01:35PM -0800 Here are two photos https://goo.gl/photos/CRivH9iwT6WRQQ5Q9 |
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 - 25 updates in 7 topics"
Post a Comment