Great job well done.

17k rpm washing machine.. you imagine the spin cycle g forces of a 17k rpm?! I know its not doing that but hell i dont think youd need a clothes dryer.. you could separate chemicals with that.. lol. But get a pair of pants off balance than youre gonna have yourself a battle bot crashing around the laundry..

Hello. Thank you for the video. I have a similar Dyson. However on mine when I put the battery back into the machine it starts without me pressing the trigger and I can't stop it running. I would appreciate any advice that you can give me. Thank you. Regards. Elio

I think the logic used in the end of this video points to the best value in 2v cell/48v system - it is easier to test, maintain and remove 2v cells that are no longer performing as necessary. I could be wrong because I an just beginning this adventure of self powering our property - but - it makes more sense in terms of "isolating" the battery bank problems that will arise with single cells reducing capacity of our battery bank.

what is the value of the fuse tks

It's an old battery pack, more cells will fail and the three or more bad cells will drag down the good cells performance in discharging and charging. Make three packs with spare cells for the future. P.S. you know lifepo4 batteries have thousands of cycles before their capacity drops to 80%. Let them take the cycles while reducing the cycles in lead acid who's potential cycles is much less.

My 80yr old dad just passed in November of '23. He had worked for Harrison Radiator Division of GM for 40+ yrs. He had spent most of that time as a boiler code welder. When he retired he always wanted to set up a metal working shop here in our barn with 3 phase. Well that never happened. He was able to purchase some things from the plant where he spent the last 10 years because Delphi bought out Harrison and was closing it down. One of these 'goodies was a large fan which I believe has a 3hp motor. It was wired for 3 phase, my dad didn't know how to convert it, so it has just been sitting in our barn for 20yrs. I saw your video when it was fairly new, and shared it with my dad who got excited. The next thing we knew we were too busy to get into it. I felt like it was a carrot just dangling in front of me, but only inches from my grasp. Well, now I have a bit more time, so I'm studying up with all of your wonderful videos. I will be paying very careful attention be assured. Thanks again for sharing your great insight & resources Andy!

Great

Excellent maths lesson Andy... more numbers here than the lottery... hope you did not keep the rest of the prius.... sorry cant offer more input...I only know batterys on rc cars.. N x

I would test capacity. At least for a few worst and best cells. Ideally for all. If one cell in a pack has much smaller capacity then others, it will get faster to top voltage at charging and to low voltage at discharging. It will influence total voltage of the battery. Then I would put the battery to some kind of use. NiMh cells can revive after a few cycles. After they are not used for longer period, they tend to perform badly, but after been put in use, they can get in better shape. But not expect miracles with old cells. I am playing with old NiMh AA cells. They perform strange. Measuring internal resistance can't give you good proof of health also. OK; if IR is 100mohms or 2000mohms, you know the second one is bad. But capacity can tell you more, to decide what to do. There's another catch at charging. When NiNh get fully charged, they will pick up temperature, and the voltage will drop. Just to complicate charging more.

Great content the truth of maintainability

Nice 😊

Thank you Andy, working on this problem right now, excellent tips for me to complete the job.

Your video helped me to change my dead cells and I restored battery to working condition. Saved $$$. Thanks

Who is the company that cleaned them? I have same tractor same problem. Full engine rebuild, injection pump rebuild. All new. Got a miss Hoping to have my injectors cleaned

They often use N channel fets in both positive and negative side as they usually have better charectristics than P channel fets. They just need a gate drive that is 10v higher that the supply rather than ground. A dedicated H bridge driver uses capacitors in series with the supply to 'bootstrap' the gate voltage 10V above supply. It will be 4 banks of N fets in an H bridge configuration to the drive transformer with an 'AC' waveform. Personally, as they look easy to remove, I would mark up and remove the transf windings and check for shorts between windings and single winding to winding resistance checks. As you know, shorted fets are a prime candedate but if they are blown what caused it? With meter in diode mode, FETs Source to drain should be (roughly) half volt drop in one polarity and open in the other and the gate should be fully isolated from drain and source. All dependant of the fet in test being out of circuit of course all though an in circuit dead short from Drain to source is a sure sign of blown fets. drop in

I've been watching @LearnElectronicsRepair for a while now, and his approach is more an in-depth analysis of the circuit, and what it is doing / not doing. Yes, you could get lucky, by pulling each MOSFET, and testing it out of circuit, or it could be another failed component(s).

Take a dremmel and cut around the potting and then when you go back together tap some threads and silicone a aluminum plate on it.

They seal it up like that to discourage cloning by Cheap Charlie. In reality Cheap Charlie already has MPPTs out there very much cheaper (just divide their spec by two). MPPT is not rocket science. I dont like the way Victron tries to lock you into their proprietary network system. They are a $$$$ product which may be justified for commercial rigs but domestic needs a cut down version.

Thanks Andy. I would put the same amount of effort in to trying to repair it. It looks well made, just not designed to be repaired. Given the installation location of many of these units on boats, I can see why they are sealed. Its a shame that they are. I don't really think that they have much to be gained from preventing repairs. Most people don't consider repair before they replace. The only reason people consider repair with phones and laptops is because of what is on them, rather than the equipment. The amount of working stuff I can get from the tip is testament to that.

Hello Andy, personal I find your video very interesting and also informative. But really I don't believe that someone has the time and all needed tools to repair a Victron sealed Charge Controller. Anyway it seems like "Dick" removed all screws from the outside, then used a gas blow torch to heat up the front cover. Seems like sealing stuff needs get to be 100+⁰C also inside and then there's a chance to "brake it " to open kzbin.info/www/bejne/nXScdnmLfbCrnsksi=uoRMI2VoHg0oxDAG

The old fashion way sir,thank you !

Haha i read "Victorian" got to put the Guinness down 😅

Overrated rubbish , sealed tight to heat up right😅 Made in India 😅 ExApple ceo tactics= make ir unfixable 😂 Ypu can save heaps just get a Chinese one

Cheers Amdy

got several 20 and a bigger 150v all smart and would love to see if they can be fixed if ever need by my topic electronic heroes!!!! honestly nice try ... for the penies they worth you cant just scrap em without last stand try!!!!!

Good job with the measuring. From my quick look it's the high voltage across the FETs that make them expensive; lower voltage and high current can be had at reasonable prices. Must be the insulation needed within the package. Fingers crossed Tally Ho has better luck with their Victron setup!

Well done getting it apart. The aluminium cover you are cutting, looks like it’s injection moulded. All the sides will be drafted (angled) to release it from the mould. So measuring from a curved, drafted face is very difficult. If you stand the controller vertically on the edge you are trying to measure from, against something square (angle plate) your measurements will be easier and more accurate. If I had one of these, I could mill the slots in the cover to access the fets. These controllers are very expensive, so I don’t blame you spending time getting it apart😊👍👍

You Do well at getting them apart wish they were built for repair

Have you contacted Victron and what did they tell you?

What an annoyance. Such expensive charge controllers and then broken. I bought a 150/85 12v-24v oversized model for my 1600 watt solar panels. 24v 675Ah battery bank. If this one ever breaks, I will never buy such a model again. It must simply to be dis-mountable.

Well done Andy, always learning, thanks for your content 👍

With the controler face up on a flat surface and your set square flat on the bench touching the side of the controler measure from the set square to the point on the face to you are trying to measure.

What's a nightmare to get into. I kind of have a love hate relationship with Victron. Good luck repairing it, you can do it Andy!

well done Andy, i look forward to the solar test. i use a few 100/30 CONTROLLERS so good to know, thanks 👍

"Bad scene, man!" is right. Good luck!

I would have liked to see the bar tested after all of your work. Cool video. 😎👍

i have an Victron MPPT 150/85. Oversized for my 1600w solar panels. Bud for the safety i buy this controller to make the load not to heavy for an longer lifespan. If this MPPT controller unexpectedly breaks, I will buy an MPPT controller that can be disassembled for repair.

Mighty little tractors they were

I don’t understand why you condemn them They seem to be working perfect as they should.

I saw there is an aluminium plate inside the cover to disperese heat and maybe shield the outside world from high frequency fields. Maybe it can be heated with some inductive power aplied from the front. A few big neodymium magnets on a roting disc driven by some drilling machine will cause heat. Or an half open tranformer with iron core, an electromagnet, can induce current in the aluminium? Then the heat is generated from inside and from all conductive parts near the front. And now with the "substance" available it could be tested at what temperature it becomes soft. Worth a try.

Thank you so much Andy. Searched for hours trying to get info on the pull starter for my 038 Stihl. The one you repaired here is the same. You are a champ :)

My 13-year-old Aurora inverter suddenly showed error E031. While I was searching for a solution I found this video, took my inverter apart, found one of the relay pins had arced so I soldered it according to your instructions and the inverter has been working for a month without a problem. Thank you!

It could be filling the device and making it unserviceable is also a cooling issue. The coils and even the capacitors may get hot in a non ventilated box. I have a faint memory some of the earlier Blue Solar devices where filled with something similar to sand. But I would rather have a serviceable unit than having it glued. The design is trivial and easy to check for errors if not filled with "glue". Att least they could have made all power electronic devices on the heatsink and the fuse accessible.

Just now watching this

I've had three of those fail and a 75/15 fail. Gave up and bought an epever China one, been fine for years

An electric house is a great idea off and on grid. Simply because there are so many ways of generating of electricity. Electricity is a very useful type of energy, it can even give you clean water, heat your home and charge your car. For cooking and heating (survival) there is coal as a Backup, just keep a few 100 kgs in a shed and leave it there. It won't go off. Batteries and solar is quickly becoming cheaper, if you have a field, why not fence it in with solar panels and keep some chickens?... Happy days.

Excellent

thanks

Cheers for the vid. Just changed the diaphragm on a 22 year old unit with 0.5mm plastic sheet I use for modelling. Saved £15 on a new one and God knows how much on the call-out. The money can now be better spent on a few bottles of wine. 🤪