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Fluke 5700A repair (Patreon)

Published:
2020-09-28 06:48:59
Imported:
2026-06
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Content

Finally ... uh almost done 🙈

PWM DAC needs some more love and a conclusion at the end is missing.

Anything else you'd wish more details about? Editing the final version now

Files

Previews only

Repair: Fluke 5700A Multifunction Calibrator

Fast and affordable PCB prototyping services by https://jlcpcb.com/ Banggood Scope meter https://bit.ly/30fTv28 Beginner Calibrators :) https://www.welectron.com/DMMCheck-Plus-Multimeter-Calibration-Reference Behind the scenes sometimes https://www.patreon.com/marcoreps MDP-XP Tantalum Vaporizer now cheaper: http://bit.ly/2kM1uCv With coupon code BGMN7954 Keyboard PCB project and some other files: https://github.com/marcoreps/5700A 00:00 Intro 02:18 A18 Filter repair 07:13 Display problems 09:17 Front panel 13:28 Simple chores 16:50 A17 Reg / Guard Crossing 18:18 A11 PWM DAC 20:34 A10 Ohms Main Assembly 21:13 A9 Ohms Cal Assembly 21:55 A8 Switch Matrix 22:45 A7 Current / Hi Res Osc 24:02 A13 Osc Output 24:59 A12 Osc Control 26:49 A16 Power Amp 28:09 A15 HV / High Current 30:18 A14 HV Control 31:43 Conclusions 35:33 Finally some magic smoke In order of appearance: PTB Imagefilm https://www.youtube.com/watch?v=eKnryj__4_M Fluke 5730A Introduction https://www.youtube.com/watch?v=85Z_NBQF4lE 'Metrology food chain' article https://xdevs.com/article/si2019/ Fluke 5700A service manual https://eu.flukecal.com/literature/product-manuals/5700a5720a-series-ii-service-manual Huge USB VFD https://de.rs-online.com/web/p/fluoreszenzanzeige-vfd/6659822/ Keyboard PCB, handles & more https://github.com/marcoreps/5700A Browser Circuit Simulator https://www.falstad.com/circuit/circuitjs.html Fluke 5790A AC Measurement Standard https://xdevs.com/fix/f5790a/ xDevs 5700A calibrator review and service https://xdevs.com/fix/f5700a/ Applied Science ultrasonic soldering https://www.youtube.com/watch?v=WuYdsStS1MQ

Comments

Rich Rector

These high-end test gear repair videos are some of my favorites that you do. I learn so much stuff watching you repair this gear it almost makes me feel like I could do it myself. Fortunately, I snap out of that delusion quickly enough. In any case, amazing work!

Jon Raymond

RIP Eagle. Nice job on the replacement board.

Randall Crook

Awesome. Keep up the excellent videos.

marcoreps
>>45407311

Haven't forgotten and will do soon! But there is one more calibrator thing I need to do within a limited time OSMUpdate is going to look like this: Project has gotten even more ambitious than I started out with. So it's now a team effort, check out the OSMU channel on the discord to participate. The 4-quadrant power output stage I designed and linked before has some minor mistakes, but I think it'll work soon.

Mark S

Nice general overview of how this thing works, with some laughs thrown in for good measure. You're definitely the right person to be gifted this piece of equipment.