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-   -   I need a charger schematic YLT6722000 (https://www.badcaps.net/forum/showthread.php?t=100409)

Alexbp 10-31-2021 07:18 AM

I need a charger schematic YLT6722000
 
I need a schematic of the charger
model: YLT6722000
input: AC100-240V~ 50/60Hz
output: DC67.2V 2.0A

sam_sam_sam 10-31-2021 10:21 AM

Re: I need a charger schematic YLT6722000
 
Please post some pictures of this battery charger board front and back of the board we might be able to help you with it

Please decried what is the issue with and what you have done so far

Alexbp 10-31-2021 03:27 PM

Re: I need a charger schematic YLT6722000
 
2 Attachment(s)
top and bottom view

diif 10-31-2021 05:16 PM

Re: I need a charger schematic YLT6722000
 
What's up with it ?

Alexbp 11-01-2021 01:48 AM

Re: I need a charger schematic YLT6722000
 
2 Attachment(s)
D3 diode was short-circuited and on U3 the supply resistance is 109 ohms
LED was always green

Alexbp 11-01-2021 03:54 AM

Re: I need a charger schematic YLT6722000
 
I have a question, can I replace D3 FR207 with 1N5407?

eccerr0r 11-01-2021 10:05 AM

Re: I need a charger schematic YLT6722000
 
No, unless if you want to replace the 1N5407 again.

Alexbp 11-01-2021 12:23 PM

Re: I need a charger schematic YLT6722000
 
Thank you very much

Alexbp 11-04-2021 10:01 AM

Re: I need a charger schematic YLT6722000
 
replaced the diode fr207 and u3 LM358, the battery charges after 5 minutes of shorting the diode and LM358.
exactly as it was

eccerr0r 11-04-2021 10:43 AM

Re: I need a charger schematic YLT6722000
 
need to figure out why it's over current, surprised lm358s fry as their outputs were specced to be shorted to a rail indefinitely, but not beyond a rail.

What capacitor was there?

This can't be the 2A output, must be a feedback output of some sort...

Alexbp 11-04-2021 10:43 AM

Re: I need a charger schematic YLT6722000
 
current consumption when charging 2.10A

Alexbp 11-04-2021 10:48 AM

Re: I need a charger schematic YLT6722000
 
capacitor 100 F 35v

Alexbp 11-04-2021 10:54 AM

Re: I need a charger schematic YLT6722000
 
LM358 ok replaced the diode all works, but how long

eccerr0r 11-04-2021 12:31 PM

Re: I need a charger schematic YLT6722000
 
Anything other than the diode cooking?

Putting a 1N4007 or 1N5407 or a fake FR207 will cause it to self cook.

Alexbp 11-04-2021 01:08 PM

Re: I need a charger schematic YLT6722000
 
1 Attachment(s)
also heats up MUR1060FCT

eccerr0r 11-04-2021 03:03 PM

Re: I need a charger schematic YLT6722000
 
Does it heat up with nothing connected?
Sure the battery that's being charged is okay?
Might be normal too, or simply underdesigned...

Alexbp 11-05-2021 08:18 AM

Re: I need a charger schematic YLT6722000
 
without load all cold voltage at the output 67.4v, when you connect the battery is strongly heated FR207, the output is 54v

Alexbp 11-05-2021 08:22 AM

Re: I need a charger schematic YLT6722000
 
Before it happened, the battery was connected to the bike and had not been moved for 2 months.

eccerr0r 11-05-2021 08:32 AM

Re: I need a charger schematic YLT6722000
 
how many volts is the battery by itself? Does the battery have shorted cells? Li-ion or SLA battery?

FR207 heating up is still kind of strange, the MUR1060FCT I can understand heating up...

eccerr0r 11-05-2021 08:38 AM

Re: I need a charger schematic YLT6722000
 
BTW If you must "upgrade" the FR207, you can try the FR307 but I don't think that's the right course of action...

oops accidental double post...


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