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Victron Cerbo-GX 48v System Bulletin

HighTechLab

HighTechLab

AKA Dexter - CTO of Current Connected, LLC
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A caution to users of a Victron Cerbo-GX on 48v systems, with serial numbers: HQ2201xxxxx up and including HQ2220xxxx

Your Cerbo may have a flaw that causes it to fail upon initial power up.

Details from Victron attached.
 

Attachments

  • 2022-08 Cerbo GX power supply issue in 48V systems - v5.pdf
    265 KB · Views: 123
"Also, once we have stock of good units, we are happy to replace it with a Cerbo GX that does not require an external capacitor for systems where the external capacitor is not accepted."

Will this replacement only apply to distributors? Are people who already own an affected unit stuck with this having to settle on this "fix"?
 
HighTechLab said:
A caution to users of a Victron Cerbo-GX on 48v systems, with serial numbers: HQ2201xxxxx up and including HQ2220xxxx

Your Cerbo may have a flaw that causes it to fail upon initial power up.

Details from Victron attached.
Click to expand...
Thank you for this dangerous Info....

My CERBO has the serial HQ22008xxxxx.....
That means, I will add this recommended 100µF/100V Electrolytic Capacitor.

But what happens, if this CERBO will fail once ?

Best Regards
wha
 
HighTechLab said:
A caution to users of a Victron Cerbo-GX on 48v systems, with serial numbers: HQ2201xxxxx up and including HQ2220xxxx

Your Cerbo may have a flaw that causes it to fail upon initial power up.

Details from Victron attached.
Click to expand...
So I'm debating on getting either a cerbo or a RasPi 4, 4GB or attempting to use a mini PC running Linux image for the cerbo. Can the cerbo os be ran on a mini PC? Will there be any conflicts or issues with the drivers? Is an older full mini PC, used to run it as a video server for my home theater, with intel celeron CPU, USB, HDMI, SSD drive, and is just sitting there collecting dust now. I have checked the prices for the RasPi 4, 4Gb boards and man they are high! I wonder if is possible to run the Lunix image on the mini PC. what other version of the RasPi will run the cerbo image, will a RasPi 2 run it, does it have WIFI and BT support? I have seen the RasPi 3+ being used but there is a shortage of them too and their prices have soared! Thanks for any assist on this.
 
Victron does not offer any support for DIY Cerbo's, and if they cause harm to the rest of your system, they won't warranty those parts. Typically it's a bad idea to save a marginal amount of money buying a PI vs a cerbo.

Victron does have a new Cerbo-S GX that is a bit cheaper than the normal Cerbo GX, in exchange for some of the typically unused IO. We just started stocking them.

And a video covering the fix listed above:
 
Last edited:
So just to be clear. My Cerbo-S GX serial HQ2225xxxx should be ok right? Has a no yet had issues with this newer run of units?
 
good info thanks. hadnt installed the box yet and fetched a capacitor this morning from local store ($2 capacitor) to be ready
 
What is the difference between the S-GX and GX? What reasons would people go with GX over S-GX
 
Cerbo-S has no analog input and no BMS-CAN input. Think of "S" for Simple.

It's also less money.
 
Does anyone know what the repair is to fix a failed Cerbo GX? I just changed to a 48V system a week ago, and my Cerbo GX stopped working. The serial number falls into the defective range of units. I'm going to contact Victron on Monday, but I'm fairly proficient with electronics repair and it might just be easier for me to replace the defective SMD component rather than waiting for a replacement unit.

I found it surprising that any time I connected the Cerbo GX power leads I got a small spark. I'm guessing it's a mosfet that got blown up by the inrush current. Replacing it is probably a 30 minute job, but diagnosing something with schematics can easily suck up half a day.
 
pkomoro said:
Does anyone know what the repair is to fix a failed Cerbo GX? I just changed to a 48V system a week ago, and my Cerbo GX stopped working. The serial number falls into the defective range of units. I'm going to contact Victron on Monday, but I'm fairly proficient with electronics repair and it might just be easier for me to replace the defective SMD component rather than waiting for a replacement unit.

I found it surprising that any time I connected the Cerbo GX power leads I got a small spark. I'm guessing it's a mosfet that got blown up by the inrush current. Replacing it is probably a 30 minute job, but diagnosing something with schematics can easily suck up half a day.
Click to expand...
Trust me, your time is not worth it.
 
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