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by skylogger
Mon Sep 10, 2018 3:31 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Hi Christophe: The fault with your charger might be a bit different to the ones I am working on. It sounds like DC-DC is still working which means the 20 amp fuse has not been blown. It also seems to detect when AC is connected. "The apparent diagnosis: when I plug my charging cable, the green ...
by skylogger
Sun Sep 09, 2018 9:25 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Hi Electropusher: If you look at Ohm out the riser vertical PCB, you will find as per KIEV's schematic, that the SMD Caps emulate the two original through hole caps, which connect to the main board by four holes. I thought these were in series with each other, but the track routing on the main board...
by skylogger
Sat Sep 08, 2018 8:06 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Did a really lengthy post about answering some of Electronpushers questions, but took too long and the form timed out and I lost it all. So heres an abbreviated version "Do we need to remove the black stuff in the dog house, or can we mount the new snubber caps on the riser (I know the rise is ...
by skylogger
Sat Sep 08, 2018 6:59 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Hi Coulomb: I'm glad we have these little chats, Too bad I did the relay test, before I discussed with you what I was going to try. I did see that the relay coil (on the relay itself) was not polarized, and I had the top PCB disconnected, and the waffle board removed, so I did not think polarisation...
by skylogger
Fri Sep 07, 2018 8:16 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Hi KIEV: All of my posts from 29th of August onwards are regarding this 2nd OBC 17 SKYLOGGER#2 that I've been working on. The first OBC 13 had the Twisted 39k resistor, blown 2x 1000pf caps in the doghouse and the 20 amp fuse in MCU Blown. That was all that was required to get it running again. So f...
by skylogger
Fri Sep 07, 2018 2:08 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

For the 4.7R resistor that I found blown in the doghouse, I found a DIGIKEY A102487-ND This is rated at 7 watts, and has same axial 5mm pitch mounting and 14mm width so it looks quite simular to the original part. For the relay, I found a DIGIKEY Z6355-ND Which is an OMRON G2RL-1AE-ASI I made the mi...
by skylogger
Fri Sep 07, 2018 1:57 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

electronpusher: I had same problem with fuse, I placed an order with Mitsubishi Dealership here in WA, But they said it would take a week to get the stock from SA. Maybe I grabbed the last one in stock in WA. So I did not want to wait for that to arrive to start testing, so in the meantime, I contac...
by skylogger
Thu Sep 06, 2018 11:54 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

I've come across some faulty componens now. These have probably just blown up due to me jumping the gun and not taking Coulomb's advice and using a current limited powersupply during testing. Since the charrger has now stopped detecting AC comming in, I decided to check the AC input part of the char...
by skylogger
Thu Sep 06, 2018 3:53 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Hi KIEV: You can add this second Charrger that I am working on as #17 on your Index on this thread. I've used Coulomb's suggestion, and I've replaced the 20 amp fuse in the MCU on the I-MIEV that I am using as a test bed with a fuse holder and a 1000v rated 20 amp fuse that is commonly used in the s...
by skylogger
Wed Sep 05, 2018 12:39 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 432
Views: 96981

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

Hi KIEV: As you suggested, I've been checking the small components around T501 And T502 I've noticed that around T501 is the Q502 with Diode D505 Across pins 1 and 3 of the transistor. I have my meter set to DIODE checking mode, and I am measuring 0.068 in BOTH directions across Diode D505. This is ...

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