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Broken Mantiz Venus  

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(@buh_khuu)
Trusted Member
Joined: 2 years ago
 

Hey,

Some help would be highly appreciated!

 

I was able to get a second hand Mantiz Venus for just 30 bucks. The one selling it to me, already said it was possibly broken, but he couldnt verify since he did not had any thunderbolt devices. 

I still made the deal, thinking i could fix it myself. I had a Razer Core X, but i wanted to have one cable solution with ethernet and peripheral dongle. So the Mantiz Venus fits my needs.

 

Now I plugged in a Vega 56 and my 2018 Macbook Pro 15 inch, and nothing... unfortunately. Not a single fan spinning or anything... So I took the venus apart, checked the PSU, by shortening the green wire with ground, and then the fan started to spin. I took out the main board, and didnt find any burnt spots or anything. Does anyone maybe have an idea for me to check? 

thanks in advance!

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2018 15" MacBook Pro I7-8850H RP560X
Razer Core X with Sapphire Radeon Vega 56
Dual LG 4K Monitors (27UD88 and 27UD69)
Running MacOS Catalina and Windows 1903 non optional update


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(@don_lee)
New Member
Joined: 1 month ago
 

Did you ever make any progress with this?

I just got a new Mantiz Venus and the PSU seems to be DOA and no response from Mantiz. My PSU doesn't seem to be powering up at all. Did you get power to the PSU but then nothing to the board?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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(@buh_khuu)
Trusted Member
Joined: 2 years ago
 

@don_lee, hey, ive already sold mine because i was not able to find the problem. 

What I have done to make sure the PSU did work, was taking a voltage meter, stick it in the 12V rail and ground. Take a paperclip, short circuited the green active wire to ground. The fans started to spin and the voltage meter gave me 12V. 

So from here I thought the PSU was working. There could be something else wrong with the PSU, but i think mine was just a broken PCB... I was not able to find any burnt spots or anything, no falling capacitors, and every component looked okay, comparing it to online pictures i was able to find about the PCB. 

 

Even though I have an electrical engineering degree, trying to find a problem without the schematics is a pain in the ass.

 

2018 15" MacBook Pro I7-8850H RP560X
Razer Core X with Sapphire Radeon Vega 56
Dual LG 4K Monitors (27UD88 and 27UD69)
Running MacOS Catalina and Windows 1903 non optional update


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