Electronics Forum | Thu May 01 18:14:19 EDT 2008 | jmelson
Yup, this is pretty scary, all right. I have just used up the last FPGAs of a batch we bought from a Chinese source. Never again! Some of them worked, some didn't, in a variety of nefarious ways. People cautined me about empty packages, etc. Wel
Electronics Forum | Mon Jan 28 16:11:04 EST 2008 | jmelson
Well, inquiring minds want to know how that machine got in that condition? Left out in the rain for a year? Fire sprinklers went off? I almost believe it DID get dunked in the ocean, the corrosion is pretty awesome! Jon
Electronics Forum | Mon Mar 05 13:25:45 EST 2007 | jmelson
I will have to rent a forklift to get it off the truck. If I don't cut the wall first, then the machine sits in the garage while the rental is ticking away at $200+ a day. Also, moving it twice doubles the possibility of a catastrophe. I've got so
Electronics Forum | Wed May 23 12:33:51 EDT 2007 | jmelson
Andras, Thanks so much for putting this manual up for download! It is exactly what I needed, and if I ever run into electrical problems with my machine, the schematics will save me an expensive service call. There is also a lot of calibration info
Electronics Forum | Mon Jun 25 04:43:54 EDT 2007 | andras
Hi Jon, Thanks for the dimensions. It is quite larger than CSM66, so I haven't got chance to buy 84. You are very "lucky" because you "only" had to cut a bigger hole for it. My workshop is "under" the ground, in the cellar,so I had to explode my mac
Electronics Forum | Tue Oct 16 18:04:13 EDT 2007 | jmelson
Yeah, getting water into electronics, especially when there is power on, even just battery power, is REALLY bad business. I was rather surprised that you only lost part of the memory if water got up to the board. It may be fixable, but you may have
Electronics Forum | Wed Nov 07 18:11:44 EST 2007 | jmelson
I can't answer for wave, but we tried some Sn100 paste for reflow, and couldn't get it to work worth a darn. I then got some SAC305, and was relieved to see it work almost as well as SnPb at its best! Much better wetting and flowing to the various
Electronics Forum | Thu May 01 18:17:09 EDT 2008 | jmelson
I just got done analyzing an old piece of gear with relabeled parts. We had a schematic of the boards, with no info other than the OEM's part numbers and the way the chips were interconnected. It took me no more than 15 minutes with a couple databo
Electronics Forum | Sun Dec 17 22:23:46 EST 2017 | jmelson
Well, I fixed it. I had resisted taking the motor off because of the recalibrations that would be required. But, it got bad enough I had to. Under the microscope, I could see copper dust packed between the commutator segments. I removed that, and
Electronics Forum | Wed Aug 26 15:10:04 EDT 2020 | jmelson
Thanks, I have ordered a replacement IO_DPRAM board from Korea, we will see if it fixes the problem. 2 weeks ago, right after I got the machine, it would go ready. After a couple days, it would no longer respond to the ready button. All attempts
winsouce.jpg)