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by Virusman
Fri Mar 27, 2020 2:53 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

THX. Looks ok, green and blue are in the same order as on your schematic.
by Virusman
Thu Mar 26, 2020 2:12 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Hi again guys, could some one check connection on board for two trafos?
See photo beloow:
Image
by Virusman
Mon Mar 23, 2020 3:58 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Hi, I checked once again the diodes with this new schematic (10 diodes). I disconect all connection I check once again and figured out thtat diodes are ok but connection betweend diodes and trafo's is not. I have to wait for my phone, I got there some pictures from previous repair and I will able to...
by Virusman
Fri Mar 20, 2020 3:53 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

i know it's long, but how much of this thread have you been able to read? belive me... maybe not all but a lot of from this thread. neverminde I found something, this one diode is shorted. Is it DF20L60U? My plan is to desolder waffle plate, cut leads and solder in that place new diode, I think I s...
by Virusman
Wed Mar 18, 2020 2:53 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

1. Did they also replace the fuse in the MCU? Usually that also blows when the blue snubber capacitors are blown in the OBC. 2. With 230 VAC input voltage then the PFC voltage seems okay since it will be adjusted thru the boost switching section transformers to match the pack voltage on the output....
by Virusman
Tue Mar 17, 2020 5:07 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Hi Guys, few weeks ago I recived another charger with blowed up blue capacitors. Replaced them and send back charger. Now I get it back again. It's not charging. For the firs time I saw that one of the three capcitor is a little bigger. Voltage on PFC is 316,9V I'm using true rms multimeter. Is it o...
by Virusman
Sun Feb 02, 2020 6:24 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Hi Easky15 , just visit any web shop with electronic components for example: http://www.digikey.com/ or http://www.farnell.com . If You want to replace relay, just by exactly the same. Gold rule: don't buy the cheapest one. My question is: how to test charger without car and batteries? Is it possible?
by Virusman
Fri Jan 31, 2020 3:52 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Hi, thanks for your reply it's very helpfull.

4,7Ohm resistor was broken, and someone before me replace blue caps.
I'm not a user of this charger so I'm not sure if that is everythink.
My customer didn't give me any additional information.

Best regards
by Virusman
Wed Jan 29, 2020 1:35 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 480
Views: 114764

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

Hi guys, I need help.
During desoldering I broke one of the capacitors.
See photo:
Image

Value of capacitance will be great, at least color of the capacitor.
Name of IC304 also will be helpfull.
Best regards.

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