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Pars

High Rollers
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Everything posted by Pars

  1. Put a new (via epay) logic board in the Powermac G5 and got it running, hopefully for quite some time. Found the service manual and the Apple System Diagnostics disc online, so was able to run the required thermal calibration myself, instead of bothering the Apple store. Turns out it wasn't the DIMM sockets, but the memory controller IC, which is a BGA package. Oh fun. It is mounted on the back of the board, and the heatgun was heating it up to get it to work temporarily. If anyone wants to school me on BGAs, feel free. I may try to fix the original board if I can get access to some shit at work. Was thinking about doing a reflow in the oven at home, ala some of the XBox or PS3 fixes you may have run across, but there is a lot of stuff that would need to be protected from the heat. Plus the no-clean Kester 951 flux I got is flammable. That and a gas oven made me pause a bit... honey, do you mind if I cook a board in the oven? Oh yeah, it may start on fire
  2. Happy Birthday!
  3. Holy sheetballs! That is nice! I'll be right over (until I read what Nate said).
  4. Anyone have a PCB mount SATA connector (through-hole, 7 pin vertical) or suggestions where I might be able to find one locally (Chicago)? Got a motherboard with a broken one. Something like this:
  5. They may be IEMs, but the important take away from this is that they SOUND like Ultrasones...
  6. Happy Birthday!
  7. They are a small manufacturer, so it would not surprise me if they change now and then a bit. By how much lower do these measure? Within the 1% tolerance? If you are uncomfortable with them, make them replace them. Particularly if they are out of tolerance, though meter calibration would come into play there.
  8. I haven't tried their chapstick (usually use Carmex if I need any), but have been using Nivea's products for awhile. Their shaving cream and a facewash. Good stuff from this company.
  9. Happy Birthday!
  10. Wow, that looks great Jim! I managed to stifle my urge to ask to see the granite top when we met for lunch the other week
  11. ^ because they can? Seems the internet and blogs have made many feel they just have so much to say... oh wait..., I just wrote something...
  12. Was just poking around TentLabs site (hadn't been there for awhile) and noticed that the tube output stage he uses for his DIY CD player claims an input impedance of sub 1 ohm. http://www.tentlabs.com/Components/page4/page4.html The IV converter uses an E88CC valve as transimpedance amplifier. It fully operates in the current domain, and is a new and novel design. The advantage over existing tube based output stage is the low input impedance (typically well below 1 ohm) which reduces the distortion generated in the DAC chips compared to the situation when these are loaded with say 100 ohm, which seems common practice these days. After the E88CC stage, a passive filter follows. The actual IV conversion takes place using an Audio Note tantalum resistor, signal coupling is achieved using Audio Note copper foil paper-in-oil capacitors. 2 pairs of outputs are available, a straight output with a moderate 2.5 k-ohm output impedance, and a buffered one with output impedance well below 200 ohms. The IV stage is fed by a custom made toroidal transformer, the well regarded 6X4 takes care of high voltage rectification.
  13. Good luck with day 2 Brent! Hang in there!
  14. Wishing the best for your dad Marc...
  15. I'll try to post a pic tonight...
  16. The Hakko tips have a sleeve that is removable in them. Each tip includes one. In the manual I found online, these were not shown...
  17. Did the replacement tip have that inside sleeve like the Hakko tips do? If not, grab the one out of your Hakko tip and see if it fits... not sure if the bit spinning some is a problem, but I guess it would bother me as well.
  18. Anyone doing a dynafet from the latest GB might also be interested in those...
  19. Was there a BOM posted? I looked thru the thread, but may have missed it.
  20. Sorry to hear that Ken. Yes, surgery always has risks...
  21. Met Jim (morphsci) for lunch today. I had a DAC to let him try, and he was up here picking something else up. Nice lunch, and good conversation. Much more enjoyable than my normal lunch, and great to see him again.
  22. Not sure what you were looking at, but I've had a Basement Watchdog for quite a number of years (mid '90s when we lost power and got probably 1-2' of water in our basement). I think it is supposed to run for ~7 hours if you lose power. Of course if you were motivated enough, you could rip batteries out of your cars and extend the run time
  23. Happy Birthday!
  24. And good job Brent. When I had my surgeries, they only gave me Vicodin I got pretty used to only sleeping an hour at a time for at least a couple weeks. Keep at it and know it will get better!
  25. Thanks Reks. The fix only lasted a couple of hours, so out with the logic board, maybe sometime this week. If I can't fix it, I may want to talk to you, but I don't really want to put much money into this thing. I'm starting to remind myself of Spicoli... http://youtu.be/A5cneCgNA9U
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