Hi Barry! I appreciate the positive words! I don't quite have that level of confidence, but since those who have gone before me in similar efforts have been successful, I guess it's not out of the

Hi Ernesto! Thanks for the excellent advice! I have been looking at new and used variacs with that in mind. However, after I built the incandescent bulb current limiter this morning, I felt that I

Hi Michael, By now several members have posted about the all too common myth that everyone in the US (the most high-tech country on the planet) who wants a gigabit connection to the internet just has

If you have a cellphone, you have pretty good internet. Android phones have hotspot capabilities that rival any public access internet. That's what I use out on 80 acres of land 20 miles from the

Why not just upload the picture, sketch, whatever, to the 'Files' area, and reference the uploaded file in a message? Mark - AD7EF

Not "if" but "when" you get it working. You're over half-way there! Thanks, Barry - N4BUQ <snip>

Hi Albert, Yes, I re-read them just after turning the scope off, before my last reply, and I re-read them just now. All three are shorted regardless of the polarity with which I measured them. So

Hi ciclista41@ You are bringing this old scope to life, and you correctly start by evaluating its power supplies. What is very useful to have for this step, is a variac (a variable autotransformer)

In my own post, 'etc student' was to have been 'EEC student'. sorry

The schematic of which I write is in the probe's manual. It uses a T-coil to extend the bandwidth. With all the discussion about attachments, ... Further, I'm not sure how to post a photo of the

Hi Bruce, I wonder if you would again read 0 Ohm now. Maybe some caps reformed when you powered the scope up. The combination of a slightly low +110V and a way too low +105/+160V is strange. The

MCM68766 is the goto EPROM for these, but sadly they've got very expensive lately. David

Hi WB6KBL, Richard.: Roy here, VE3UOT! Regards. Best wishes, and 73.

Be very careful using that Weller 110/140 as Mr. Carlson describes. That thing will put a lot of heat into the board and traces. I use my Weller WES51 and Vacuum solder station to remove these

Hi Dave, Just tried your suggestion, but I get zero (shorted) regardless of probe orientation. Thanks for suggesting that, though! Bruce

Hi Albert, Thanks for replying! I only used an analog multimeter to take the readings, and I verified them with another analog, so am confident in the values I got. However, the value of resistance

Bruce, Did you try reversing the probes on your ohmmeter? There are reverse biased diodes on each of the regulated supplies outputs, (excepting +110v), that may be forward biased by your ohmmeter

Pulled JP1306 on the MCU board and it's progressed slightly, showing only the CHOP indicator on the horizontal mode buttons, so appears to be ROM failure. I have a good selection of old EPROMs around

Hi Michael Getting a bit off topic for the list :-) In my previous location I had a 50 Mb cable connection with 5 static IPs. That connection was rock solid and never had to think about it. Before

Just seen that Paul's chasing the same issue, so following that thread for now.