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I test this E3646A power supply with a DC electronic load to make sure that it works, I then show to to change its AC line voltage, repair it’s smashed front panel, and then show how to repair the rotary encoder.
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Some Of My Electronics Tools (video and purchase links)
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Boonton
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4220.
8210: defs.link/?u=e...
Fluke
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8842A:
45: defs.link/?u=e...
343A: defs.link/?u=1...
5200A: defs.link/?u=a...
540B: defs.link/?u=0...
893A.
A90.
HP/Agilent/Keysight
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4261A: defs.link/?u=0...
5005A.
5342A 18GHz: defs.link/?u=5...
6181B: defs.link/?u=b...
8012B: defs.link/?u=c...
8648B: defs.link/?u=d...
8901B: defs.link/?u=5...
DSOX1102G: defs.link/?u=a... defs.link/?u=1...
E3646A: defs.link/?u=1...
Marconi
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2022D.
2955.
TF2103: defs.link/?u=6...
Rohde & Schwarz
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SMY: defs.link/?u=9...
CMU200: defs.link/?u=8...
Polarad SPN: defs.link/?u=2...
Siglent
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SDM3065X: defs.link/?u=1... defs.link/?u=1...
SDS2102 (hacked to 340MHz): defs.link/?u=1... defs.link/?u=1...
SPL-1008.
SDP1168X: defs.link/?u=1... defs.link/?u=1...
SDL1020X-E: defs.link/?u=a...
Other Equipment
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KSGER T12 Soldering Iron: defs.link/?u=6... defs.link/?u=5c...
Quick 861DW: defs.link/?u=1... defs.link/?u=a...
S-993A: defs.link/?u=0... defs.link/?u=e...
EEVBlog BM235: defs.link/?u=1...
YR1030 Battery ESR: defs.link/?u=c...
Heathkit IT-12 Signal Tracer.
Racal Dana 1992: defs.link/?u=8...
Bird 43: defs.link/?u=4...
Sinadder 3: defs.link/?u=2...
Audio Control SA-3050A RTA: defs.link/?u=a...
Korad KA3305D: defs.link/?u=6...
PDVS2mini: defs.link/?u=8...
Valhalla 2703: defs.link/?u=0...
Feeltech FY6800: defs.link/?u=8... defs.link/?u=34...
Eakins Microscope: defs.link/?u=b... defs.link/?u=2...
Mustool G600: defs.link/?u=b... defs.link/?u=3...
Handheld Equipment
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Uni-T UT210E: defs.link/?u=3... defs.link/?u=e...
DER DE-5000: defs.link/?u=0... defs.link/?u=1...
MK-328: defs.link/?u=0... defs.link/?u=7...
MESR-100: defs.link/?u=0... defs.link/?u=0...
ESR Meter: defs.link/?u=0...
HOPI: defs.link/?u=7...
PeakMeter PM6252: defs.link/?u=5...
HS1010: defs.link/?u=1...
Thermal Camera: defs.link/?u=2... defs.link/?u=4...

[@GrandsonofKong]

Nicely Done! Great all the bits and pieces were still around.

[@TheDefpom]

Yep, I was pleased to get it all glued back together, it seems strong enough, now I just need to sell it.

[@evrim73]

Torques 15 is the size of the screws. You are absolutely great :))

[@allthegearnoidea6752]

I like the load tester, I have an old kirkisui well something like that. Works well but I was thinking of upgrading to something with a logging function. Nice power supply. You are the most unlucky person I know with shipping I know how it feel after they smashed the tube in my HP logic analyser.

[@SeanBZA]

Baking soda and superglue in the cracks to fill it, followed by some light sanding with 1500 grit waterpaper till smooth, and you will never know they were there unless you see the colour change. got the same cordless drill, just blue and branded Ryobi. did a conversion to it to replace the NiCd cells with an 18650 lithium cell and control board, and bodged together a charge cord to use USB power to recharge the battery. As the motor is a little large for the DW01 and mosfet to power it that is just the charger now, and the motor is driven direct from the cell. Works well, and a little more power along with a lot longer run time off it. Still got the junk LED lamp in it still.

[@IanScottJohnston]

Jings!.....only goes to prove EE guys have same ways of thinking.....I did similar conversion hack to battery garden strimmer. Li-on much better :)

[@Goldandtravel]

Nice stuff 👌

[@merrittderr9708]

At 8:07, we take the SHARP end of the tweezers and after carefully backing it up with our BARE FINGER, pry the tab up. Sometimes it's better to be lucky than good . . . :o)

[@falkkyburz]

Did you replace the RIFA caps?

[@Drew-Dastardly]

Did you load test the higher 3A lower voltage range on both channels too? It's not in the video. You could have also had the opportunity to show the Maynuo back panel source leads for 4 wire connection to the supply with the higher amps vs 2 wire on the same and indeed the 4 wire of the S+/S- of the PSU itself. Good job on gluing the panel back together.

[@merrittderr9708]

Sorry for the tweezer re-visit because I didn't read BigGroucho's comment...

[@christopher88719]

Hello! Thank you! You gave me the inspiration to glue back together a really nice HP oscilloscope that arrived with two if it's rear stand up/power cord wrap feet broken off. Got to love eBay! I went back after watching this video and found all the little pieces that were still in the box and spent a good couple of hours gluing it together. I used Loctite super glue and as much as possible. It looks surprisingly pretty nice, you almost can't tell it happened and this was broken into 25 pieces easy. So the question I have for you, is how is it holding up on your unit?

[@TheDefpom]

The glue is holding up OK so far!

[@daviddevillers6790]

hard to imagine the impact it took to break that panel!

[@tigrafrog]

One shalt never underestimate the will&might of postal workers to bring destruction and misery to everyone. One shalt always pack everything so it can be send to the Moon with blackpowder cannon. (Not joking).

[@TheDefpom]

I was just glad that the VFD wasn't damaged too.

[@zx8401ztv]

Struth that was in need of oil of ulay :-) I think clear expoxy resin in the cracks using a needle would of made it better, a bit of sanding and ready for paint. Quick sell it to a mug.... err nice customer :-D

[@Eagleoneradiogod]

Man and i need to find some test equipment for my little work room. This makes me sad. To see that i will do all my research and have my first oscilloscope come to me all smashed.🤕

[@TheDefpom]

Just make sure that you ALWAYS specify exactly how you want it packed, stress that it is likely to be dropped and thrown around by the postal service.

[@Eagleoneradiogod]

@@TheDefpom I will 3 inches all the way around minium

[@SeanBZA]

Scott, looking for some RF transistors? Got some TIC RF35 if you are interested.

[@TheDefpom]

I'm not familiar with those ones, so probably not something I would use, only really interested in MRF455/SRF3775, MRF477 types.

[@BigGoucho]

How many times do you draw blood with those tweezers?! I was watching through my fingers a couple of times 🤣

[@TheDefpom]

It's OK, I discovered that my body has this cool ability to plug the holes back up.

[@d...c...]

I was under the impression that the E36XXA power supplies' encoders have never shipped with detents on the encoders (or indents as you call them), which is why the damping grease is in place. This would explain why the detent yoke is completely flat. (Or I could just be wrong.)

[@TheDefpom]

Once cleaned and re-tentioned there are detents present, the grease will be a dielectric grease to lubricate and help avoid oxidation forming.

[@danishnative9555]

Cheap, mechanical rotary encoder soldered onto the PCB. So typical of newer test gear. Order some spares.