Hot air gun and bang the board on the bench is a common technique
Personally I don't like the seller. He seems to be breaking kit for precious metals and selling what he does not want. Prices are high and parts are often misrepresented. Typical of ebay his over-priced stuff often sells. He has listed HP 8922x cellphone test set modules as having been removed from a 8920A. The modules are similar, but most are not identical and won't work properly in a 8920x
He may be De-milling some kit that he can't contractually sell complete but he has also bought TE items from RAMCO auctions and broken then. Unfortunatly a lot of kit sells for less than you can get for its component parts.
My Brain is hurting. Chinese made version of a fully open sourced project and the Muppets subbed in 100k 7 bit Digital Pots instead of the specced 50k 8 bit ones Wonder why my Smoothieboard isn't talking to the steppers
Midnight here so a double Scotch and Chocolate for the brain.....
mnem
*distraction-ily*
WTF is that supposed to be? A Hairy tooth?
My mind blanked the new stuff, can't see past the recycled bits...
My Brain is hurting. Chinese made version of a fully open sourced project and the Muppets subbed in 100k 7 bit Digital Pots instead of the specced 50k 8 bit ones Wonder why my Smoothieboard isn't talking to the steppers Midnight here so a double Scotch and Chocolate for the brain.....
mnem
*distraction-ily*Sub $3 worth for the two Digital Quad pots but I think a few kicks in the balls might be preferable to reworking the 20 pin TSOP packages by hand
My mind blanked the new stuff, can't see past the recycled bits...
Fair enuf. It's a slippery slope, I'll agree. I was just wishing for that kind of "fun-time" again; the closest I ever get now is stuff like stereos and occasional computers/bits from the thrift and schizz. The PC I'm on right now is a i5 HP I bought for $9.99 when we first got up here; added a random spinning rust and 2nd stick of ram and gave it to the boi for a schoolwork box. That kind of thing isn't really tinkery; it just feeds that the Best Form of Recycling is Re-Use hoarder's instinct.
My mind blanked the new stuff, can't see past the recycled bits.Hot air gun and bang the board on the bench is a common technique
Personally I don't like the seller. He seems to be breaking kit for precious metals and selling what he does not want. Prices are high and parts are often misrepresented. Typical of ebay his over-priced stuff often sells. He has listed HP 8922x cellphone test set modules as having been removed from a 8920A. The modules are similar, but most are not identical and won't work properly in a 8920x
He may be De-milling some kit that he can't contractually sell complete but he has also bought TE items from RAMCO auctions and broken then. Unfortunatly a lot of kit sells for less than you can get for its component parts.
Unfortunately there are many seller that are only interested in parting stuff out.
Haven't got a hot air gun, still must have problems with parts with leads that are folded over.
David
Got a chance o look at the FRK Rubidium. Cleaned off the external decaying foam. I find lifting as uch as possible and then using methanol and an "acid brush" works best. If you press or rub the foam it just makes a sticky mess.
Replaced the fuse and am pretty much back to square 1. The lamp housing does not seem to be getting up to temperature. Have to sort out the insulation before messing with it. Lamp is lit OK
More interestingly, putting the thermocouple probe near to the lamp cavity (it is at 24V hence earlier fuse blowing inciden) causes the digital thermometer to turn off Presumably RF because if I touch th TC sheath and chassis it is OK.
Looking at the circuit (below) there are two decoupling capacitors on the housing. These are C12 and C14, both 6800pF 100V MLCCs. So ther should not bethat much RF in there. I'm not taking the back plate off to check then until I've sourced some insulation. This is because it's a fair bit of dissasembly and I don't want it sitting around in bits waiting.
Annoyingly, a couple of months ago a neighbour was having an extension done and the were some Kingspan off-cuts in the skip. I was going to pick some up but had no immediate need for is so didn't bother.....
test quote
My mind blanked the new stuff, can't see past the recycled bits...
Fair enuf. It's a slippery slope, I'll agree. I was just wishing for that kind of "fun-time" again; the closest I ever get now is stuff like stereos and occasional computers/bits from the thrift and schizz. The PC I'm on right now is a i5 HP I bought for $9.99 when we first got up here; added a random spinning rust and 2nd stick of ram and gave it to the boi for a schoolwork box. That kind of thing isn't really tinkery; it just feeds that the Best Form of Recycling is Re-Use hoarder's instinct.
Recycling PCs is fairly safe fun. Quite enjoy doing that. Perhaps I should have been a necromancer.
My current most successful patient is an old i5 Lenovo desktop i have been keeping spinning for my mother for 9 years now. One new power supply, an SSD and a CMOS battery and cleaning out once a year and sorted. Saying that I bet it drops dead now
BTW working on the archive script for this thread again. The last outage worries me a bit. Rather than scraping directly it’s using chromedriver as some of the third party image hosts have a lot of trickery to stop me archiving the images with them
Edit: mnem / AVGresponding ... your markup is giving me a headache
Die!
On PC front it’s similarly inane here. If you lurk you can get some decent stuff for not much money. BNIB T495 for £550 is a winner when T470 are going £449 used
It's possible those collet knobs might be from the Elma Classic collet knob range;
https://www.elma.com/-/media/products/products-files/knob_classic-collet_datasheet_e.pdf
David
Die!
On PC front it’s similarly inane here. If you lurk you can get some decent stuff for not much money. BNIB T495 for £550 is a winner when T470 are going £449 used
Yeah, you got lucky on that one... can't count on that kindof luck when you need a new machine.
So what do you think of NVidia/ARM/Grace...? Think it's the "game-changer" for infrastructure they're promising, or do you think they're just trying to bring their consumer-grade level of transdimensional bullshit to industrial/corporate/cloud services where the real money aggregators now live...?
mnem
Got a chance o look at the FRK Rubidium. Cleaned off the external decaying foam. I find lifting as uch as possible and then using methanol and an "acid brush" works best. If you press or rub the foam it just makes a sticky mess.
Replaced the fuse and am pretty much back to square 1. The lamp housing does not seem to be getting up to temperature. Have to sort out the insulation before messing with it. Lamp is lit OK
More interestingly, putting the thermocouple probe near to the lamp cavity (it is at 24V hence earlier fuse blowing inciden) causes the digital thermometer to turn off Presumably RF because if I touch th TC sheath and chassis it is OK.
Looking at the circuit (below) there are two decoupling capacitors on the housing. These are C12 and C14, both 6800pF 100V MLCCs. So ther should not bethat much RF in there. I'm not taking the back plate off to check then until I've sourced some insulation. This is because it's a fair bit of dissasembly and I don't want it sitting around in bits waiting.
Annoyingly, a couple of months ago a neighbour was having an extension done and the were some Kingspan off-cuts in the skip. I was going to pick some up but had no immediate need for is so didn't bother.....Look for "Aerogel insulation mat" on EPay, that stuff should be nicely insulating but will not decay under high temperatures. Quite ugly to handle though, so if the insulation is exposed: not recommended.
Got a chance o look at the FRK Rubidium. Cleaned off the external decaying foam. I find lifting as uch as possible and then using methanol and an "acid brush" works best. If you press or rub the foam it just makes a sticky mess.
Replaced the fuse and am pretty much back to square 1. The lamp housing does not seem to be getting up to temperature. Have to sort out the insulation before messing with it. Lamp is lit OK
More interestingly, putting the thermocouple probe near to the lamp cavity (it is at 24V hence earlier fuse blowing inciden) causes the digital thermometer to turn off Presumably RF because if I touch th TC sheath and chassis it is OK.
Looking at the circuit (below) there are two decoupling capacitors on the housing. These are C12 and C14, both 6800pF 100V MLCCs. So ther should not bethat much RF in there. I'm not taking the back plate off to check then until I've sourced some insulation. This is because it's a fair bit of dissasembly and I don't want it sitting around in bits waiting.
Annoyingly, a couple of months ago a neighbour was having an extension done and the were some Kingspan off-cuts in the skip. I was going to pick some up but had no immediate need for is so didn't bother.....Look for "Aerogel insulation mat" on EPay, that stuff should be nicely insulating but will not decay under high temperatures. Quite ugly to handle though, so if the insulation is exposed: not recommended..
Been looking at that. Most of it just seems to be standard silica insulation, not real aerogel. I'm tempted to use either isocyanate type foam (Kingspan) wrapped in kapton tape or silicone foam. Just don't want to buy a full sheet of either
Die!
On PC front it’s similarly inane here. If you lurk you can get some decent stuff for not much money. BNIB T495 for £550 is a winner when T470 are going £449 used
Yeah, you got lucky on that one... can't count on that kindof luck when you need a new machine.
So what do you think of NVidia/ARM/Grace...? Think it's the "game-changer" for infrastructure they're promising, or do you think they're just trying to bring their consumer-grade level of transdimensional bullshit to industrial/corporate/cloud services where the real money aggregators now live...?
mnem
Not luck. Lurk. I know a few sellers who have large stocks of them and are trying not to saturate the market. The first part of any such thing is look at the sold items, then look for stuff you want to pay for and then ask the seller if they have any more.
As for NVidia/ARM etc. Bwuhahahahahaha not a chance. Firstly no one likes or trusts NVidia. The big ARM boxes cost real money, more than the Xeons due to the lower volume and the TDP is pretty damn high as well. The only thing you gain is better core scalability at the moment which is not something you should be relying on for scalability at the application level. Current savings work out around 10% on ARM nodes but that's quickly killed off by running two parallel toolchains and the pipeline side of things. Then there's the differences between each platform as the ARM ecosystem is not standardised at all.
Key thing is you don't want to single source your entire infrastructure. As much as it's shit, x86-64 has two reliable vendors, standardised platform, decent supply chain (intel at least), proven track record and parity with the toolchain and development nodes.
Even if I'd rather work on ARM, it doesn't make sense anywhere other than mobile, embedded and entirely controlled desktops (apple will do fine on it)
It's possible those collet knobs might be from the Elma Classic collet knob range;
https://www.elma.com/-/media/products/products-files/knob_classic-collet_datasheet_e.pdf
David
Or Sifam. I think there might even be some degree of interchangeability between the two ranges given how similar they look.
Yeah, I figure fApple's angle is they did the math and decided that going ARM will save them x dollars in the long run, and it's enough for them to be willing to eat the up-front cost right now. End of discussion.
In their market, there is value in completely changing your hardware base periodically; it goes hand in hand with the Exclusive Club angle which is their stock in trade as the faithful just eat that shit right up, plus it makes planned obsolescence much easier to paint a pretty face on for those who are not Of The Body .
It's possible those collet knobs might be from the Elma Classic collet knob range;
https://www.elma.com/-/media/products/products-files/knob_classic-collet_datasheet_e.pdf
David
Or Sifam. I think there might even be some degree of interchangeability between the two ranges given how similar they look.
Had a look through their website, can't see anything similar unless they have discontinued them.
The Elma catalog I linked does show some similar to what is already fitted to Vince's counter.
David
Question: Tek Scopemeter THS 720A
any good ? Fair price ? Seller is asking 270€