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Author Topic: Enertia Basic VCU, Pictures and questions  (Read 2959 times)

Columbo

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Enertia Basic VCU, Pictures and questions
« on: August 12, 2018, 09:17:13 AM »

Hello,

after i changed the VCU of my not running Enerta Basic, travelled 300 km in two weeks. Everything looks good for me now.

See attached the open VCU cover and the look of the schematic.

First I couldn't see anything, that looks problematic. Today in a new search I found that the sockets of the five pins are melt. Obviously something is blown, Q11, Q12 or Q13 they are located next to the pins.

Does someone of you has an schematic, where I can find what these transistors are for and what types they are?!

Greetings
Robert
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #1 on: August 12, 2018, 09:18:38 AM »
attached more files...
« Last Edit: August 12, 2018, 09:22:55 AM by Columbo »
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #2 on: August 12, 2018, 09:19:42 AM »
more atteacjed files...
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #3 on: August 12, 2018, 09:20:30 AM »
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #4 on: August 12, 2018, 09:20:54 AM »
more...
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #5 on: August 12, 2018, 09:22:15 AM »
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #6 on: August 12, 2018, 11:58:41 PM »
...and here the PCB with traces of dust. On the bottom of the plastic pins you can see the heat impact of something that was hot...
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KaFr

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Re: Enertia Basic VCU, Pictures and questions
« Reply #7 on: September 05, 2018, 08:11:22 AM »
Hello Columbo,

good work!

Greetings
Karel
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Columbo

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Re: Enertia Basic VCU, Pictures and questions
« Reply #8 on: October 12, 2018, 02:02:01 AM »

Hey guys,

for everybody who is interested in how the story ends, here my results:

On the pix you can see the DCDC Converter from Murata. This was blown. I changed it and now everything works fine! The defect was visible by a look from the side, i saw a crack through the casing of the IC.

The root of the defect is still unknown.

So, if someone has problems with the electronic: don´t give up the fight!

Greetings
Robert
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