Recent content by marcjs14

Peter, Thanks for the reassurance re. the metal films...I initially had to verify the wattage since they just didn't look appropriate based on their size! Regarding the FREDs, the Vishay VS-E5PX3006L-N3 (30A) are TO-247 packages, so I will try sending them back and install the...

Sorry for the "radio silence" - I've been awaiting parts and therefore had nothing to report until now... ...the 30 amp diodes as well as the 2w 65k Vishay resistors arrived from Mouser. Both raise packaging questions: I read somewhere that a metal-film vs. carbon resistor-swap leads to a...

Peter, that is correct:

Peter, Apparently this is it...B2040. So manufactured the 40th week of 2020? Thanks, Marcel

Peter, I just checked two of my new Nichicons on a Snap-On tester (non-ESR). They confirmed the values I got using my Chinese tester...the two new Nichicons measured 480uF and the original Panasonic came out at 500uF. Given they are supposed to be 560uF +/-20%, the 80% value would be 448uF...

Peter, just for grins I took a sample of four of my new replacement Nichicon 560uF electrolytics and measured them using my Chinese capacitor tester. Guess what they each measured? 480uF! :( I think this tester is junk. I'm going to bring them into work tomorrow where we have a proper...

20 mili...it goes from 2000 pF-->2 uF-->20 mF in ten steps. Done it. I wasn't able to change my order to the 30A FREDs since Arrow mysteriously sold out overnight, so I ordered them thru mouser along with the metal film resistors. I'll just return the 15A FREDs after they arrive. Thanks...

The range goes up to 20mF. I've been scouring the internet for 65k 2w ceramic resistors, and they appear to be unicorns. How critical would the value be (62k and 68k readily available)?

Silly me! When I started measuring them and they all came in around 500 I completely forgot they were supposed to be 560uF and not 500. To be consistently off by on average 12% is in itself interesting. Maybe a dry 560 becomes a 500 - in which case they even fail the same way??? I will...

Thanks Peter! I think I'd make the resistor bands to be blue, green, orange, and gold. Green could be brown, but I doubt it...In any event, I'll verify once pulled from circuit mid-week when other parts arrive, I've ordered the caps and diodes from Arrow Electronics, which is my primary...

THE STRIPPER IS ON THE WAY! I thought I'd make my morning post sound like fun...speaking of which - I'd had more fun in H.S. detention! Those electrolytics were a PITA to pull. I think I'll wait for the stripper to arrive before I attack the diodes and ceramic caps...I am still trying to...

I will see whether I can change the FRED order to the 30A version (VS-E5PX3006L-N3). They are a bit slower, but not by much. Thanks!

Peter, I like it although I wouldn't know where to start to implement it! Sticking to the basics, I've sourced a sh*tload of Vishay S103K75Y5PN65K0R caps to replace the Hitano garbage as I pick through the rebuild. I also ordered replacement Vishay 600V 15A Hyperfast FREDs just in case the...

That datasheet is for the high-frequency (30-60kHz) version, this is the one I have. Thanks

Peter, No rush at all - I'm just grateful for yours and Kurt's support. I've gone ahead and ordered a NOS IGBT module just in case. I figure while I'm in here I might as well replace anything which appears suspect (or could be), and hope for the best. I kind of regret having sourced the...