Milwaukee M12-18C charger power supply - I am looking for a diagram

Hello!
Does anyone have a diagram of this charger? After introducing the steel chips into the housing, I changed the appearance and I can not figure out what is what in the field of standard elements such as resistors, diodes, capacitors, etc.

Hello. Insert a picture of what it looks like after these steel shavings?

I did an inventory of resistors and zener diodes. It should come in handy (Marking on the resistor in parentheses)
R21 47 Ohm 5%
R12 68 k 5%
R8 51 Ohm 1%

SMD resistors
R18, R13, R17 620Ohm (621)
R69 520 Ohm (521)
R52, R53, R46, R51, R55 100K (104)
R58, R59, R25, R14, R87 4.7K (472)
R75, R76 MEASUREMENT - 57K (01D) 100K
R91, R89, R36 1K (102)
R40 1K (01B)
R56, R84 27K (273)
R66, R65 2.2K (222)
R60, R61 510K (514)
R57 5.1K (512)
R71, R72, R70 200K (30D)
R31, R47, R33, R29 200K (204)
R49, R50 10Om (100)
R16, R95, R23, R86, R81, R15, R85, R24 10K (103)
R22, R94 10K (01C)
R93 measurement -25K (48C) 30.9k?
R88 0 (000)
R82 2K (202)
R30 20K (203)
R73 measurement - 740K (01E) 1M?
R74 measurement - 380K (58D) 392k?
R45 measurement - 40K (59C) 40.2k?
R83 100Ohm (101)
R1, R2, R3, R4 470K (474)
R7 4.3M (4304)
R6 measurement - 6.4K (79B) 6.49k?
R10 8.2om (8R2)
R101 47Ohm (470)
R90 2K (202)
R28 330Ohm (331)
R92 82Ohm (820)
R20 ???????????????????????????
R27 510Ohm (511)
R43 measurement -25K (39C) 24.9k?
R44 measurement -33K "check" (58D) 392k?

Zener diodes
ZD1 18V
ZD2 ???????????????????????????
ZD4 39V
ZD5 4.7V
ZD6, ZD7 16.7V
ZD8 5.1V

Q1, Q2, Q4, Q10, Q11
1 AM 4 (NPN)

Q8, Q9
HK (NPN)

Q5 Mosfet

D18, D20
A7 Z

Can anyone identify the ZD2 diode ????? and the resistor R20 ?????.
In the thread "Milwaukee M12-18C, component identification"
https://www.elektroda.pl/rtvforum/topic3385980.html#16768999

There is a photo but the resistor marking is not visible and it is best to measure the diode.
I suppose that ZD2 will be 20V because it is to stabilize the voltage of 22V and in addition there are 0.65V drops, diode and 1.4V optocoupler, hence 22V- 2.05V 19.95V?
And the R20 resistor looks like 820Om designation (8200) connected in series with 330Om ??????????

Below is a photo


One AOD413A mosfet was also replaced with TO252 AP9567GH,
both PC817 optocouplers,
TOP258YN chip blew up
resistors R8, R20 ????, R92, in R27 the inscriptions burned.
the zener diode ZDE2 evaporated

For R20 I gave 820 Ohm and the zener diode 20V. I haven't turned it on yet, I'm waiting for help.


Thanks

Dear gentlemen, I would like to add that the charger was previously tortured by a fachman, which is why it was in this condition.

With R20 820? elements, the Zener ZDE2 20V diode, the charger started charging one battery, but on the other one the TOP driver burned down again. The second time I also replaced the R12 68k? / 5% resistor and in its place I put two 150k? MŁT in parallel. Now she has two batteries charged and looks like GIT.

The voltage at the output of the converter is 21.75 V, and the 18V batteries charge up to 20.7V.

As soon as the charger plugs into the socket and then removes the plug, I will insert the batteries immediately after removing the plug. Then the charger freezes and you have to wait about 10 minutes before it detects the battery again. [and] Do they have that?

Hello.
Resistor R20 is 82?.

Hello

Isn't R8 sometimes 5.1M?

Has anyone displayed some other diode instead of FR107?

Hello, I would like to refresh the topic.
I have a broken plate from this charger, unfortunately it fell off that paths continue to U3. I do not know what I would be like, but someone may know the replacement or the original. I would also need information where each leg of this chip is to hit because I do not know.
greetings

Added after 30 [seconds]:

Hello, I would like to refresh the topic.
I have a broken plate from this charger, unfortunately it fell off that paths continue to U3. I do not know what I would be like, but someone may know the replacement or the original. I would also need information where each leg of this chip is to hit because I do not know.
greetings

@kwiatekcwa U3 -LM358A.
https://www.ti.com/product/LM358A

Hello, I have a problem with the above charger, the batteries are charged for a very long time. I do not know if the problem is the missing capacitor that broke off the board and I have a request if someone could tell me what the value of the c42 capacitor should be.

THANK YOU. capacity is 100nf
A colleague probably made a mistake Q8 and Q9 is not the HK symbol, but the RK or N mosfet.

What is the value of this capacitor
Only the touched fell out of print. One leg is burnt.

I have U1 = TOP265F broken, it blows but cannot find a replacement or information about it.

>>20606687
This MKSE capacitor has a value of 472/630V, i.e. 4.7nF/630V.

I am attaching a photo in higher resolution.
M12-18..jpg Download (11.01 MB)

>>20873610
TOP256 documentation in the attachment.