Hello The inverter in my washing machine failed. The burnt parts were replaced but the washer still showed the problem F57 . After further measurements, I came to the Hahn V17423 transformer. I found a transition only on connectors 6 and 7, but I think it's a jumper. In addition, there is no...

Measure on the processor power supply, it is 99% damaged.

Waste of your time. I did not want to write about it early, but in these modules it is so that when the converter system is damaged, the processor is damaged.

Take photos of the module from both sides, it will be easier to talk.

Probably LNK 304 was burned and three resistors. You can't do anything about it - the module needs to be replaced.

Everything listed, only the voltage from the transformer is missing.

As for this transformer, it is probably a choke of the anti-interference filter. In the photo you can see the elements you replaced (marked in red). However, the inverter does not work. In order for the inverter to work, it must have the correct power supply +5V to the processor from the power supply (you replaced the chip in it). did you check it? It's possible that the processor was also damaged when the PSU was damaged.

You're absolutely right about that choke. I'm working in the dark because of course I don't have a schematic. Probably a layman's question, but what elements are included in the power supply? Is it on the inverter board?

In the photos I marked the converter system and the capacitor on which the voltage should be measured.

The converter circuit has been replaced, but I need to measure the voltage across the capacitor.

The measurements show that there is no 5 V power supply. The input voltage is 5 V and the output is 0 V. What should the input voltage be?

I found the next bug Charred transition from one side to the other side of the board + LNK304PN power supply. I now have 15V at the output. A bit too high I will also replace the CPU if needed. Is the selected element a capacitor (because it looks like that)? I have a short circuit on this element.

You obviously have a dead CPU. I'm curious how and what you program the new one.

Bosch WAS28442 Logixx 8 Inverter Failure - Seeking Transformer V17423 Data & Substitute

yoshi62 7281 13

Treść została przetłumaczona

Zobacz oryginalną wersję tematu

| New topic

#1 16861145 01 Dec 2017 16:55

yoshi62 yoshi62

Level 10

» |

Post #1
16861145 01 Dec 2017 16:55

Hello
The inverter in my washing machine failed. The burnt parts were replaced but the washer still showed the problem F57 . After further measurements, I came to the Hahn V17423 transformer. I found a transition only on connectors 6 and 7, but I think it's a jumper. In addition, there is no transition either on the primary or on the secondary. Could someone give me the data on which legs the primary and secondary windings are? What voltage should come out of the transformer. It is not commercially available, does anyone know a substitute?
ADVERTISEMENT
#2 16861217 01 Dec 2017 17:30

POL02 POL02

Home appliances specialist

» | Helpful post? (+1)

Post #2
16861217 01 Dec 2017 17:30

Take photos of the module from both sides, it will be easier to talk.
#3 16861471 01 Dec 2017 19:18

cezet cezet

VIP Meritorious for electroda.pl

» | Helpful post? (0)

Post #3
16861471 01 Dec 2017 19:18

yoshi62 wrote:
The burnt parts were replaced, but the washing machine still showed the F57 problem

Probably LNK 304 was burned and three resistors. You can't do anything about it - the module needs to be replaced.
ADVERTISEMENT
#4 16861616 01 Dec 2017 20:24

yoshi62 yoshi62

Level 10

» | Topic author Helpful post? (0)

Post #4
16861616 01 Dec 2017 20:24

Everything listed, only the voltage from the transformer is missing.
#5 16861655 01 Dec 2017 20:37

POL02 POL02

Home appliances specialist
» | Helpful post? (0)

Post #5
16861655 01 Dec 2017 20:37

As for this transformer, it is probably a choke of the anti-interference filter.
In the photo you can see the elements you replaced (marked in red).
However, the inverter does not work. In order for the inverter to work, it must have the correct power supply
+5V to the processor from the power supply (you replaced the chip in it). did you check it?
It's possible that the processor was also damaged when the PSU was damaged.

Attachments:

1.jpg Download (516.31 KB)
ADVERTISEMENT
#6 16861679 01 Dec 2017 20:48

yoshi62 yoshi62

Level 10

» | Topic author Helpful post? (0)

Post #6
16861679 01 Dec 2017 20:48

You're absolutely right about that choke. I'm working in the dark because of course I don't have a schematic. Probably a layman's question, but what elements are included in the power supply? Is it on the inverter board?
ADVERTISEMENT
#7 16861775 01 Dec 2017 21:27

POL02 POL02

Home appliances specialist
» | Helpful post? (0)

Post #7
16861775 01 Dec 2017 21:27

yoshi62 wrote:
what components are included in the power supply?

In the photos I marked the converter system and the capacitor on which the voltage should be measured.

Attachments:

2.jpg Download (501.24 KB)

1.jpg Download (518.36 KB)
#8 16862259 02 Dec 2017 06:24

yoshi62 yoshi62

Level 10

» | Topic author Helpful post? (0)

Post #8
16862259 02 Dec 2017 06:24

The converter circuit has been replaced, but I need to measure the voltage across the capacitor.
#9 16864588 03 Dec 2017 10:14

yoshi62 yoshi62

Level 10

» | Topic author Helpful post? (0)

Post #9
16864588 03 Dec 2017 10:14

The measurements show that there is no 5 V power supply. The input voltage is 5 V and the output is 0 V. What should the input voltage be?
Helpful post

#10 16864603 03 Dec 2017 10:21

cezet cezet

VIP Meritorious for electroda.pl

» | Helpful post? (+1)

Helpful post
Post #10
16864603 03 Dec 2017 10:21

Measure on the processor power supply, it is 99% damaged.
Helpful post

#11 16864616 03 Dec 2017 10:25

POL02 POL02

Home appliances specialist

» | Helpful post? (+1)

Helpful post
Post #11
16864616 03 Dec 2017 10:25

Waste of your time. I did not want to write about it early, but in these modules it is so that when the converter system is damaged, the processor is damaged.
#12 16864869 03 Dec 2017 13:26

yoshi62 yoshi62

Level 10

» | Topic author Helpful post? (0)

Post #12
16864869 03 Dec 2017 13:26

I found the next bug Charred transition from one side to the other side of the board + LNK304PN power supply. I now have 15V at the output. A bit too high I will also replace the CPU if needed. Is the selected element a capacitor (because it looks like that)? I have a short circuit on this element.
#13 16865050 03 Dec 2017 13:38

cezet cezet

VIP Meritorious for electroda.pl

» | Helpful post? (0)

Post #13
16865050 03 Dec 2017 13:38

yoshi62 wrote:
I will also replace the CPU if needed.

You obviously have a dead CPU. I'm curious how and what you program the new one.
#14 16865207 03 Dec 2017 14:28

yoshi62 yoshi62

Level 10

» | Topic author Helpful post? (0)

Post #14
16865207 03 Dec 2017 14:28

I think you're right and it's a waste of time. Thanks for the help.
Create an account, log in and become active in a forum and ads will not appear. You will receive points by participating in discussions.
Join this discussion.

Install the application

| New topic

Report a violation of the law

Topic summary

The discussion revolves around a failure of the inverter in a Bosch WAS28442 Logixx 8 washing machine, specifically related to the Hahn V17423 transformer. The user reports that after replacing burnt components, the machine still displays an F57 error. Participants suggest that the inverter may not be functioning due to insufficient power supply to the processor, which could also be damaged. The user is seeking information on the primary and secondary windings of the transformer and potential substitutes, as the original part is not commercially available. Further troubleshooting reveals a lack of 5V output from the power supply, indicating possible damage to the processor. The user identifies additional faults, including a charred connection and a faulty LNK304PN component, and is considering replacing the CPU.
Summary generated by the language model.