First post here. my last account is from many years ago, so found out not valid anymore.
I have a broken Multiplus 48 V 5000 here, which has a short circuit in de dc input.
I was wondering Victron have modules / parts for sale so i can repair by myself?
Some mosfets are blown up, and some capacitors are swollen… ( bad quality ) but changing the complete power module is much more easy.
To change the broken parts is much more difficult, as … no easy acces, so not very easy to take the broken out and replace.
The parts by themself are very cheap…
I can post some pictures later if necesairy…
Thanks in advance
Hi Vanders. It would help to know which country you are in.
Victron doesn’t sell directly to end users. But, your Victron distributor can help you put in a repair request with Victron. If you don’t know your distributor then go to Need support? - Victron Energy . Enter your serial number and follow the prompts.
You can also call local dealers and ask them for assistance.
I ,am in holland now, but the victron is bought in Spain, in 2017…
Years ago ( around 20 yrs ) i had a problem with a burned phoenix inverter ( also problem with bad caps ) but in that time the service department worked a bit different, logical because the company was much smaller.
They send the next day the part, and in less aweek all operational. ( and after 25 years still working )
I can give them a call, some time ago a bought some equipment from them.
If the repair is more than the economical value, then i can also repair by myself, as the parts are very cheap.
A schematic diagram would be handy, but difficult to find i think.
I’ve asked Victron for schematics to repair items replaced under warranty but could be repaired for demo purposes but not for resale. They declined to provide them. I don’t blame them, but it was worth a try. So we put broken items that look fine cosmetically in our display area so people can see what they look like. That’s better than just recycling the unit.
I can understand that, they like to protect their bizz, but as a expierenced electronics service engineer i can do a lot without.
But for quick fault finding / calibration and so on, it is recommended.
Last week i repaired the multiplus..II ( 3000 instead 5000 ) lot of screws.. because 1 of the broken mosfets was located at the inner cooler.. everything have to be opened, to get access.
3 new 75645P and 10 X 4700 uF 80 volt condensators
Victron like to have around 1000 euro,s plus taxes..
Also they told your unit is more than 8 years old, so we don,t have any parts.. what a crap answer.. Plenty available.. common parts.
Maybe the average dont know user accept this nonsens answer..
But anyway fixed for around 25 euro,s tested .. and working.
From my knowledge, the parallel mounted FETs needs to be “paired”, from characteristics point of view, as close as possible in order to share almost the same current. You can’t rely only on the drain resistors (if they are present) or the gate resistors…
Are you sure your new ones with the old ones, 8 years apart, have the same characteristics?
How does it work near the limits?
In these situations, when only ones are bad, usually all FETs are changed, defective or not. At least they are from the same batch.
You never know that.. the best solution is always to change all the mosfets to get the same values, i agree. ( 48 pieces )
But often in practice it does not matter.. (trial and error)
had the unit running with high load, till overload for long time..running without cooler, high temp switch off, charging mode.. almost no load, different input voltages, from low batt and switch off, to high voltage.. kept working, all cooler blocks more or less same temp..
from my personal experiance “paired” parts were important 20-30 years ago, when the spread in production was quite big. Especially for tube-amplifiers you need those paired ones, or a group of matching four.
Today the spread in a production-batch is so small, and even over the time, the characteristics are the same. So you can change a single FET without a problem.
BUT, the source of the FET is important.
Try to select the same vendor and don’t buy from chinese Ali-XXX sellers. You never know what you get from them. MousXX or DigikXX are reliable.
Totally agree, only exception that i will make is for high end audio amplifiers.. for switching devices, i don,t care much..
For the capacitors in the victron i maked the exception.. all new, and better specs..
As i can remember that some years ago, a number of victron,s burned by shorted capacitors.. including myself. i noticed on time because the lights went crazy.
