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I'll take Things that never happened for $500 Alex...

Happy Birthday!

Happy Birthday!

I'm pretty sure I just used the Lite-On LTST-C170CKT LEDs and the 402R resistors.

I don't know that there is much difference between them, and since I've never been successful mounting the QFN packages, I don't know about any heat difference, but I would think the regulator contribution to this is swamped by the 32 PZTAs. If I could have mounted these successfully, that is the way I would have gone. After building 4 of these, wishlist for changes/additions to the board would be: Addition of Kevin's balanced protector circuit, with a manual mute switch. Implementation of a delay circuit (5 seconds) for power application to the board to allow for the Meanwell bricks to come up at the same time. I determined that this was the source of the large DC offset I was seeing on the SE output when the amp is fired up. #1 above could take care of this if you made sure to mute the output for a couple of seconds while it is powering up. These things do run hot. I have one of the ones I built for another user back for repair after it was left on with something on top of it. Amb notes on his forum when replying to a user who used his regs in a piece of Bryston equipment that they don't like heat very well. Since the LDO reg is really the only thing on his boards, this must mean that those reg chips don't like heat much. The GB boards were done using 3oz copper, making them about as good of a heatsink as you are going to get from a PCB (and a huge pain to work with).

Started watching "The Beast In Me" on Netflix, with Claire Danes and Matthew Rhys. Supposedly uses the production team from "Homeland", which I always like. The series follows an author (Danes) who begins writing a book about her new next-door neighbor (Rhys), a real estate executive who allegedly killed his wife. Two episodes in, and it has captured my attention.

Happy Birthday!

Happy Birthday!

Happy Birthday Ken!

Happy Belated Birthday Tom!

Happy belated Birthday Todd! Sorry you weren't feeling better, and understood regarding the circumstances.

Happy belated Birthdays gents!

We've been using Canon inkjet printers for quite awhile (had two). Our current one is a TR8500 something or other IIRC. I buy the ink off of Amazon (EZ Ink store there) and it has worked fine. I had used Epson prior to that but got tired of their print heads clogging and bricking the printer. Ink is $25 for a full load for our model (currently on sale for $16). EDIT: Our is a TR8520. Best Buy has a similar TR8620 now, here.

Happy Birthday Dinny! And what Todd said as well.

I used a 3M (Adafruit) thermally conductive adhesive tape. Mouser 485-1468 (80x80mm sheet).