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Topic-icon RGBL1860 died?

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1 week 6 days ago #29534692 by roozeboos
RGBL1860 died? was created by roozeboos
Hello sir, madam.
I bought the RGBL1860. Mounted it on a large 5mm thick aluminium plate for cooling, with heatsink compound. ( in my 27 foot yacht)
It is powered by 14 1KWh lithium ion cells. Voltage is 56 volt. Motor is a 5KW golden motor.
Control by isolated RS232 port and a potmeter. Switch for on/off.

Now the problem is that is dead now. When I toggle the switch leds do not go on. The evening before it was working fine, I've tried low speed for a minute or so. So nothing special.
Ive taken the controller out to test in on my bench, but the same problem.
power on B+ and B- and connect13 and 25 of the subd. No leds on!
Ive bought it and 20th september last year.
It has run fine for a total of about 2 hours in the last months.
Can you help me?

I am a qualified professional electronics engineer, so if I can do or repair something myself that would be preffered because I cant go out with the boat now the nice weather comes...
Also, I would like to know what has happended, I cannot afford a broken controller in the middle of the northsea.
The thing is that it just seemed to have died overnight. It was switched on, but the motor was off ofcourse.

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1 week 5 days ago #29534695 by roozeboos
Replied by roozeboos on topic RGBL1860 died?
As there was no reply, I decided to have a look myself...

I fuond that D19 was shorted (diode for switched power supply.. I have replaced it, now it works again!
Can somebody from Roboteq explain this to me? Do I need to take a handfull of these with me on board?
Also, the pad with the "12 volt" label measures 16 volt. is that ok?

Serial number M345420087 & M345310036. pcb RGBL1800 v.2.0 0317

Hope to hear soon

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1 week 5 days ago #29534696 by roozeboos
Replied by roozeboos on topic RGBL1860 died?
FYI, D19 is 60 volt type. This should be a 100 volt type, according to datasheet of power supply chip. ( Vin + safety margin )

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