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Quote from: med6753 on August 12, 2020, 10:07:09 amQuote from: bd139 on August 12, 2020, 09:48:41 amI have. "I'll just route this over this PCI express lane" Nothing like asking for intermittent timing errors. Watching one of his videos convinced me that he is an idiot. Another clown is that "D Lab". The one who sips wine and destroys vintage equipment and turns them into guitar amps. Certainly has the right name. "Douche bag"D-Lab!
Quote from: bd139 on August 12, 2020, 09:48:41 amI have. "I'll just route this over this PCI express lane" Nothing like asking for intermittent timing errors. Watching one of his videos convinced me that he is an idiot. Another clown is that "D Lab". The one who sips wine and destroys vintage equipment and turns them into guitar amps. Certainly has the right name. "Douche bag"
I have. "I'll just route this over this PCI express lane"
Quote from: Specmaster on August 12, 2020, 09:44:51 amQuote from: bd139 on August 12, 2020, 09:19:28 amExcept he does it on tracks which are carefully length and impedance controlled I have never witnessed that in his videos.Neither have I.Quote from: bd139 on August 12, 2020, 09:48:41 amI have. "I'll just route this over this PCI express lane" Where was that?
Quote from: bd139 on August 12, 2020, 09:19:28 amExcept he does it on tracks which are carefully length and impedance controlled I have never witnessed that in his videos.
Except he does it on tracks which are carefully length and impedance controlled
Quote from: med6753 on August 11, 2020, 03:12:54 pmQuote from: mnementh on August 11, 2020, 02:39:53 pmUnder any circumstances, I've contrived a bodge that gets the old RIFA back in circuit mostly safely so I could put the scope back to standby duty instead of the repair queue; no, I'm not going to post pics of that crime. Just know that I've admitted my guilt here and now; if Karma catches up with me, I can greet Murphy with a clear conscience. mnem I share my bodges for the entire group to criticize and laugh at. What makes you special? Because it's WORSE than this one, which, thankfully, did NOT fit in place. mnem
Quote from: mnementh on August 11, 2020, 02:39:53 pmUnder any circumstances, I've contrived a bodge that gets the old RIFA back in circuit mostly safely so I could put the scope back to standby duty instead of the repair queue; no, I'm not going to post pics of that crime. Just know that I've admitted my guilt here and now; if Karma catches up with me, I can greet Murphy with a clear conscience. mnem I share my bodges for the entire group to criticize and laugh at. What makes you special?
Under any circumstances, I've contrived a bodge that gets the old RIFA back in circuit mostly safely so I could put the scope back to standby duty instead of the repair queue; no, I'm not going to post pics of that crime. Just know that I've admitted my guilt here and now; if Karma catches up with me, I can greet Murphy with a clear conscience. mnem
bloody hell.Hubby in hospital with heart issues. Undergoing angio right now. Why does my life always kick me in my nonexistent balls ?
Quote from: mnementh on August 11, 2020, 03:58:36 pmQuote from: med6753 on August 11, 2020, 03:12:54 pmQuote from: mnementh on August 11, 2020, 02:39:53 pmUnder any circumstances, I've contrived a bodge that gets the old RIFA back in circuit mostly safely so I could put the scope back to standby duty instead of the repair queue; no, I'm not going to post pics of that crime. Just know that I've admitted my guilt here and now; if Karma catches up with me, I can greet Murphy with a clear conscience. mnem I share my bodges for the entire group to criticize and laugh at. What makes you special? Because it's WORSE than this one, which, thankfully, did NOT fit in place. mnem That is perfectly acceptable, I have seen many new pieces of gear with parts mounted beneath the board.
Why does my life always kick me in my nonexistent balls ?
I sold a Tek AWG2021 in a parking lot yesterday. I interestingly felt like a dealer.Imagine the empty parking lot of a shopping mall. I'm outside my car checking my phone. The client arrive and park his BMW nearby. I open the trunk of my car. He inspects the goods then satisfied, pay me cash.
Running a wire for high current traces is kind of risky I think.It's not that I would not do it if I had to revive something and did not have any other choice.However for some applications I would rather cut out an entire new trace and attach it to the board and exchange the rivets connecting top and bottom layer (I have a Bungard press for this).Which is why I was asking for the self adhesive copper foil.It seems to me that 3m conductive copper foil would be an option, however a friend of mine will send me some to repair my preamp.Procedure is: remove Solder mask, cut to fit, put on, tin it, check continuity, reapply solder maskobviously the pcb needs to be inspected for cracks and damaged traces, and that is where the microscope comes in.
Quote from: Brumby on August 11, 2020, 03:25:47 amQuote from: mnementh on August 11, 2020, 03:14:27 amWhat; doesn't everybody mail felines...? They make this flat-rate box that's the perfect size... mnem"...like trying to stuff a cat into a sack..."... and the magic part is that they will pack themselves! Just leave the box in a corner somewhere and watch the cat climb in and snuggle down! A quick flip of the lid and the deft application of some tape and you're all set. Exactly. If I start carrying a shipment inside the cat is the first on the scene just waiting for an open box. And if you leave one around she's in like Flynn !
Quote from: mnementh on August 11, 2020, 03:14:27 amWhat; doesn't everybody mail felines...? They make this flat-rate box that's the perfect size... mnem"...like trying to stuff a cat into a sack..."... and the magic part is that they will pack themselves! Just leave the box in a corner somewhere and watch the cat climb in and snuggle down! A quick flip of the lid and the deft application of some tape and you're all set.
What; doesn't everybody mail felines...? They make this flat-rate box that's the perfect size... mnem"...like trying to stuff a cat into a sack..."
Quote from: BU508A on August 12, 2020, 10:15:20 amQuote from: med6753 on August 12, 2020, 10:07:09 amQuote from: bd139 on August 12, 2020, 09:48:41 amI have. "I'll just route this over this PCI express lane" Nothing like asking for intermittent timing errors. Watching one of his videos convinced me that he is an idiot. Another clown is that "D Lab". The one who sips wine and destroys vintage equipment and turns them into guitar amps. Certainly has the right name. "Douche bag"D-Lab! Yep, that's him. Should be strung up by his balls.
Quote from: mnementh on August 11, 2020, 03:58:36 pmQuote from: med6753 on August 11, 2020, 03:12:54 pmQuote from: mnementh on August 11, 2020, 02:39:53 pmUnder any circumstances, I've contrived a bodge that gets the old RIFA back in circuit mostly safely so I could put the scope back to standby duty instead of the repair queue; no, I'm not going to post pics of that crime. Just know that I've admitted my guilt here and now; if Karma catches up with me, I can greet Murphy with a clear conscience. mnem I share my bodges for the entire group to criticize and laugh at. What makes you special? Because it's WORSE than this one, which, thankfully, did NOT fit in place. mnem For one terrifying moment, I though that was a surface mount RIFA!!! McBryce.
Quote from: Saskia on August 12, 2020, 10:09:59 amRunning a wire for high current traces is kind of risky I think.It's not that I would not do it if I had to revive something and did not have any other choice.However for some applications I would rather cut out an entire new trace and attach it to the board and exchange the rivets connecting top and bottom layer (I have a Bungard press for this).Which is why I was asking for the self adhesive copper foil.It seems to me that 3m conductive copper foil would be an option, however a friend of mine will send me some to repair my preamp.Procedure is: remove Solder mask, cut to fit, put on, tin it, check continuity, reapply solder maskobviously the pcb needs to be inspected for cracks and damaged traces, and that is where the microscope comes in.Another option is copper foil made for Tiffany-technique (Yes THAT Tiffany's) stained glass art. It has a heat-activated epoxy coating (if you get the good stuff, not the cheap shit from GoodLuckBuy) on the back that is meant to bond with glass; it works equally well on FR4, etc. It is available in widths from 3mm to 14mm last time I looked. I have used this to make PCBs from scratch. Available from any reputable stained-glass supply house for pretty reasonable.mnem
Quote from: Specmaster on August 12, 2020, 09:35:57 amQuote from: mnementh on August 11, 2020, 03:58:36 pmQuote from: med6753 on August 11, 2020, 03:12:54 pmQuote from: mnementh on August 11, 2020, 02:39:53 pmUnder any circumstances, I've contrived a bodge that gets the old RIFA back in circuit mostly safely so I could put the scope back to standby duty instead of the repair queue; no, I'm not going to post pics of that crime. Just know that I've admitted my guilt here and now; if Karma catches up with me, I can greet Murphy with a clear conscience. mnem I share my bodges for the entire group to criticize and laugh at. What makes you special? Because it's WORSE than this one, which, thankfully, did NOT fit in place. mnem That is perfectly acceptable, I have seen many new pieces of gear with parts mounted beneath the board.In this case it produces potential capacitive coupling (and arcing potential) between:1) Gate of main 1st DC converter FET switching ~300V2) Source of same FET (Also connected to heat sink and LO Potential side of rectified AC line voltage)3) Low Voltage "GND" plane fill under corner of capacitor which is supposed to be completely isolated from Line Voltage side of SMPS4) Metal chassis at AC LINE GND which this all faces at ~6mm spacingI tried to salve my conscience with 3 layers of Kapton tape wrapped around it all but honestly; it really is probably for the best that it wouldn't physically fit that way. mnem