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grr. clog. furry print fail. going back to bed.mnemalso, grr.
I feel like I'm hopeless because TEA
Quote from: URI on March 30, 2020, 11:41:09 am- Documentation available in Japanese only- no schematics availablePersonal conclusion:If it was available for 1K€-1.5k€ I wouldn't go for it because of the cons, especially the missing docs.Spend more time to save money to get a 3458A later. The lack of schematics is a real issue with this kind of meter as it essentially makes it unrepairable except for the most basic of faults. For the 1281, the service manual is one of the most detailed I have seen and weighs very strongly in its favour.
- Documentation available in Japanese only- no schematics availablePersonal conclusion:If it was available for 1K€-1.5k€ I wouldn't go for it because of the cons, especially the missing docs.Spend more time to save money to get a 3458A later.
Quote from: factory on March 30, 2020, 11:53:39 amQuote from: bd139 on March 30, 2020, 11:21:54 amAnd the silent key sales Assuming it all doesn't end up at the council tip when relatives haven't got time to deal with it. Or they put it directly in the wheelie bin for the fortnightly collection, as the tips are all closed at the moment, which will probably happen even though e-waste isn't meant to go in the bin.DavidThat's a fair possibility. I bought some stuff of gumtree about 10 years ago (a couple of PL bench power supplies) and the woman was just selling the things that looked like they were worth something. There was a pile in the corner with a vintage Drake full line ham shack that was going to be disposed of because it was old . I did consider offering to dispose of it for her but I wasn't interested in ham radio then and didn't want the hassle but I explained how much it and all the other stuff around was worth and pointed her at ebay. I watched her sell it all for just short of £3k. I can imagine how much stuff just goes in a skip.
Quote from: bd139 on March 30, 2020, 11:21:54 amAnd the silent key sales Assuming it all doesn't end up at the council tip when relatives haven't got time to deal with it. Or they put it directly in the wheelie bin for the fortnightly collection, as the tips are all closed at the moment, which will probably happen even though e-waste isn't meant to go in the bin.David
And the silent key sales
Quote from: mnementh on March 30, 2020, 12:16:24 pmgrr. clog. furry print fail. going back to bed.mnemalso, grr.First:Then:
@bd: Good news your feeling better! Quote from: BU508A on March 30, 2020, 10:24:10 amIf you are looking for a decent 8.5 digit DMM, perhaps this could be interesting. No affiliation with the seller.https://www.ebay.com/itm/184044642421Picture from the auction:Yep, it's an interesting piece of TE indeed. Have read much of the available information on xdevs and linked sites including the thread on the eevblog forum.Pros:- It's in the league of the 3458A- It's offers tend to around 1/3 of those for the 3458A- Some specs are better than 3458A- Very comprehensible UI- Easy calibration (cost!)- lightweightCons:- Linearity seems to be "only" 2/3 of the 3458A- some specs are worse the 3458A- Documentation available in Japanese only- no schematics availablePersonal conclusion:If it was available for 1K€-1.5k€ I wouldn't go for it because of the cons, especially the missing docs.Spend more time to save money to get a 3458A later.
If you are looking for a decent 8.5 digit DMM, perhaps this could be interesting. No affiliation with the seller.https://www.ebay.com/itm/184044642421Picture from the auction:
Haha, waking the dwagon up is real easy to do, just take or hide his beloved yellow Fluke 189
Quote from: Specmaster on March 30, 2020, 01:04:52 pmHaha, waking the dwagon up is real easy to do, just take or hide his beloved yellow Fluke 189 Or let med near it with his can of blue Krylon
Quote from: McBryce on March 30, 2020, 09:58:17 amSo this morning (before having enough coffee), I accidentally blew my Hao Qi Xin voltage reference by connecting it to the wrong charger. It now no longer charges or turns on (even after manually charging the Lipo back up). Is there a schematic floating around for this device, or is it not worth repairing, ie: cheaper to buy a new one?Do you mean one of those?https://www.markhennessy.co.uk/ad584_references/
So this morning (before having enough coffee), I accidentally blew my Hao Qi Xin voltage reference by connecting it to the wrong charger. It now no longer charges or turns on (even after manually charging the Lipo back up). Is there a schematic floating around for this device, or is it not worth repairing, ie: cheaper to buy a new one?
Quote from: BU508A on March 30, 2020, 10:14:36 amQuote from: McBryce on March 30, 2020, 09:58:17 amSo this morning (before having enough coffee), I accidentally blew my Hao Qi Xin voltage reference by connecting it to the wrong charger. It now no longer charges or turns on (even after manually charging the Lipo back up). Is there a schematic floating around for this device, or is it not worth repairing, ie: cheaper to buy a new one?Do you mean one of those?https://www.markhennessy.co.uk/ad584_references/So I decided to do some diagnosis. The charge controller (UN8HX) and a dual MOSFET (8205A) which seems to have been doing input protection are both fried. When I remove/by-pass these, the device still works as expected. If I had them in my parts bin, I'd go to the bother of fixing the voltage reference, but the cost of the parts plus shipping from China is about the same as buying a new device and the shipping time would probably be the same too. I may convert it to run from an 18650 (if I could be arsed, which I couldn't be at the moment).McBryce.
Also, I meant that there is a lot of people who will be struggling to keep heads above the water line over next weeks or so until the various government aid trickles through to them so many will be looking to liquify their assets because no one really knows just we will be facing in a few months time.
MOSFET 8205A from Spain:https://www.ebay.de/itm/254326264012UN8HX from Lithuania:https://www.ebay.de/itm/114111394681
Quote from: bd139 on March 30, 2020, 01:17:02 pmQuote from: Specmaster on March 30, 2020, 01:04:52 pmHaha, waking the dwagon up is real easy to do, just take or hide his beloved yellow Fluke 189 Or let med near it with his can of blue Krylon Wash your mouth out with hand sanitiser!!!
Chuckle brothers grade sine that. To me, to you, to me, to you.
Quote from: jxjbsd on March 30, 2020, 12:38:08 pmI feel like I'm hopeless because TEA Welcome to the TEA. @med6753: Look! You've a new friend now.
Quote from: BU508A on March 30, 2020, 12:45:04 pmQuote from: jxjbsd on March 30, 2020, 12:38:08 pmI feel like I'm hopeless because TEA Welcome to the TEA. @med6753: Look! You've a new friend now. Definitely!