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I probably have had most every part fail at some point... just not a yellow RIFA X2 cap. I still am suspicious of them... given all the folks buzzing about them. There are problems when I race my

Chuck- I unfortunately has them go in a HP? 6236 supply...it had been in use for a few hours when ...holly @#$% the smoke and stench....had to air out the house...worst/best part the power supply

I'll throw in a outlier for you.? I have had a RIFA style cap fail.? I think it was on a 7904.? Lotsa smoke, needed to air out the lab.? 120 volt land (Florida, but about 124 volts nominal). Not

Sadly, I lost the phrase "In the USA" from "But rarely fail" in my editing... I have heard of plenty of RIFA capacitors failing in the 240V land, especially in the UK where mains voltage inflation has

My experience is with 2*2465 and 1*2445b, in 240V land. All different ages from different sources. Both 2465s emitted a big plume of smoke after 30s, due to the input RIFAs. One series resistor also

Jason, Take a look at message 193101 on the tekscopes group. --John Gord

I guess I could help you with a smart alec: RTFM. In the back of the manual, they tell you the size dummy load you need to operate the inverter without the regulator board, and size dummy load you

I posted this on tekscopes but nobody seemed interested in helping in any way, not even a smartaleck comment. Nothing. Maybe y'all can help. Can anyone tell me how to safely test the power supply out

That's a terrific idea! Years ago I hacked a coil winding machine using an obsolete dot matrix printer mechanism and a microcontroller. It does a nice universal winding but the biggest problem I

Hi Roy, Don't over think this! I used Scotch Permanent Double Sided Tape that came in 1/2" x 250" disposable hand held dispenser thingies, and is marked as "Photo Safe". It is double sided tape, meant

Hi David, My real winder was much more than that, and my computerized winder even further. However, if you are going to wind only one transformer, having to turn a crank 733 times, over several days,

Where 'double-stick' = double-sided: referring to tape with adhesive on both sides Then, you can get double-sided polyamide tape. (not saying you need that... and not saying you don't want that.) The

I'm saving your post in my notes. I agree with everything. Great idea on the double-stick tape. I wish I'd thought of that. I also ran a bead of Corona Dope at the edge of the tape before each layer

A few things I can supply to encourage you to find your "quiet virtues" as described by Dave, are: 1) use double stick cellophane tape for your inter-winding insulation. The Scotch archival sort meant

Pre happiness larry I now now more French!

Thanks! I'll see how much history I can find. Not sure about my patience and other virtues, but I do have an excess of dogged perseverance once I get started on something. ?

I used the flyback layer method to rewind my 453 in 2015. No wax. Still working. I documented it in the TekScopes group, see topic and photo album "453 HV Transformer Rewind". While it requires only a

When I did the original winding, I told all on this group. You might try looking for my original postings. The transformer is really best wound using a "universal" wind, which is a self supporting

Sorry about the chat thing. I wanted to send a PM but couldn't figure out how to do it; hey, I'm getting old! Anyway, great to read about your adventures and I fully understand that we have

Hi Chuck For me it was pure Bonheur ( what is the English name for ?) to read your message. If I go thru my present problem with my 7603, I promised I tell the story Regards everyone Jean? L? C?