Bosch AL1860 CV Charger: Selecting Parts, BCK3501 395 Transformer Replacement & Purchasing

Question

Hello take solder.
I have a Bosch charger, model as above in the title.
Has anyone come into contact with the transformer that is used in this charger?
It has the symbol - BCK3501 395.
CLIcK0809
Please help me find the replacement number or have any suggestions where such transformers can be purchased?
Please help.
Regards take solder.

elek555 · Answer

put a photo of the center of the charger together with luck

jrobi80 · Answer

I took a few photos in the last photo you can see a lucko on one side it has 6 pins, on the other four

elek555 · Answer

Why do you have doubts about the traf? Have you checked the keys, capacitors and optocoupler? Both side voltages measured? Replace the photos with sharp ones because you can't see anything!

jrobi80 · Answer

I know that I have to replace it because it is heating up because the charger has been converted from 110v to 220v I have an original 220v charger and it differs with end numbers, then the charger works but the fan almost fails because the temperature inside the charger is high

TONI_2003 · Answer

Hello.
As for me, this is not the reason for the transformer to do this ...
You have an easier task since you have both versions of the charger, i.e. converted and original.
Show in a specific and sharp photo what elements you mentioned and what was probably omitted by you should be shown to us ...
Regards, take the solder.

jrobi80 · Answer

I will try to take sharp photos and the listed parts are the capacitor was 200v I changed to 400v the transistor was 500vds I gave 900vds, the thermistor probably had a soft start as in the original 220v charger it was 1.3ohm now it is 10ohm I exactly compared all the numbers of the elements according to the symbols on them is this trafo another and aha choke in the charger for 220v there are rectifying diodes, and in the converted rectifier bridge, that's all

I hope I won't get a ban
I may ask what is the task of the optocoupler in this system?

elek555 · Answer

You were supposed to exchange the photos for spicy with markings of changes ... As Toni_2003 wrote - having two chargers you can easily compare the effects, even with the replacement of the target. Nobody will do it for you. If you draw the diagram well, I will tell you about it (at least the original page). For lamination without work input will be ...

jrobi80 · Answer

Hello and sorry for the photos, but I think my camera is malfunctioning because it is not possible to take photos more severely, I marked what I replaced in this charger, except for the flyback which is warming several times, I compared the rubbing of all the elements and, apart from that, the flyback and the choke are completely identical

My point is whether such a woogle flyback will be found and whether such an exchange will be profitable. Or maybe someone would take up and decode this problem, of course, GREETING for a fee

elek555 · Answer

You have 220uF in the original capacitor? (the ripple level would be comparable for 330 because for 110 it was 680) Were there no "lower" varistors on the primary side? Is key triggering slow? It's best to exchange photos - because that's how we have a pile of rubbish. 4 good ones with a sharp plan of the whole tile from the bottom and the top, original and reworked are enough
It would be a good thing for me to switch over for a rehearsal. The values of the other elements at the controller are identical?

jrobi80 · Answer

Hello, the original capacitor for 220 v has 150uf and a 385v varistor, it is missing neither in the 220v charger nor in the 110v charger, only this thermistor and as for the flyback, I am afraid to destroy it because it is some kind of glue on the bottom, if damaged, it will be left without any chargers on 220v voltage and as for the photos I will have to borrow a better digital for Sunday, I will take decent photos and as for the value of other elements, it looks the same and the signs are identical