logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

[Solved] Beko HII 64500 FT Induction Hob: Replaced IGBTs, Transistors, 22nF Capacitors - Still Not Working

jacentus 8088 9
Best answers LABEL_AI_GENERATED

How can I find the fault in a Beko HII 64500 FT induction hob power module that still does not work after replacing the IGBTs, transistors, and 22 nF capacitors?

The module was finally repaired by replacing the IGBTs and 22 nF capacitors, replacing the relay, and soldering the broken PCB path that was acting as a fuse [#17164325] The suspected diodes/LEDs near the transistors were not the cause; after comparison with the good side, the problem was considered to be elsewhere [#17150621] A practical approach is to measure and compare the suspect section against the working board side, including the parts around the 8-legged devices and the PCB fuse [#17138544] In-circuit measurements were difficult because the board could not be removed for long, but the final repair confirms the fault was in the power path rather than the “suspicious” diodes [#17150584][#17164325]
AI summary based on the discussion. May contain errors.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
| New topic
  • #1 17137667
    jacentus
    Level 10  
    Posts: 5
    Rate: 1
    I am asking for a hint, the right power module did not work - two IGBTs burned, transistors replaced, 22nF capacitors, bridge preventive, the module still does not work, suspicious diodes at the transistors, but I do not know what diodes are. The control system powered from this module is working properly. Any suggestions are welcome. The photo of the module is attached.
    Attachments:
    • Beko HII 64500 FT Induction Hob: Replaced IGBTs, Transistors, 22nF Capacitors - Still Not Working 2.jpg (1.35 MB) You must be logged in to download this attachment.
    • Beko HII 64500 FT Induction Hob: Replaced IGBTs, Transistors, 22nF Capacitors - Still Not Working 1.jpg (365.47 KB) You must be logged in to download this attachment.
  • ADVERTISEMENT
  • #2 17137744
    Pedros050
    Level 43  
    Posts: 17914
    Help: 2471
    Rate: 3927
    Hello. You checked her because you can suspect anything. Voltage measurements done?
  • ADVERTISEMENT
  • #3 17138544
    kafilomza
    Home appliances specialist  
    Posts: 288
    Help: 37
    Rate: 94
    Hello.
    Check these elements on 8 legs, it's hard for me to say whether it was the optotriac or something else that made the measurements between those with damaged transistors and those from the second field.

    As the predecessor wrote, the meter is in hand and you have to make measurements without it. Here you have an easier task because the other side of the board is good, so there is a pattern. Is the fuse on the PCB damaged after replacing the transistors? You will find the fuse on the first board, where the power is connected.
  • ADVERTISEMENT
  • #4 17146988
    jacentus
    Level 10  
    Posts: 5
    Rate: 1
    Thanks for the hints, but all the above-mentioned elements have been checked, the significant differences appear on those diodes, which are either ordinary diodes or zener, probably 15V.
  • ADVERTISEMENT
  • #5 17147084
    kafilomza
    Home appliances specialist  
    Posts: 288
    Help: 37
    Rate: 94
    If the diode was damaged, the resistance would be close to zero
  • #6 17148589
    jacentus
    Level 10  
    Posts: 5
    Rate: 1
    The diode is from what I remember in parallel with the internal diode of the IGBT transistor,
    and if it has a break it won't show zero resistance. And it shows about twice as much as on an efficient module, which is why I want to identify it.
    But thanks for the answer.
  • #7 17148619
    kafilomza
    Home appliances specialist  
    Posts: 288
    Help: 37
    Rate: 94
    Buddy, I will ask preventively. You measured it in layout or outside of print.
  • #8 17150584
    jacentus
    Level 10  
    Posts: 5
    Rate: 1
    Unfortunately, in the system, the plate cannot be removed for longer because it is the source of power for the control, and the left side of the oven must be active.
    And the diagram is probably also a secret because it is nowhere to be found.
  • #9 17150621
    kafilomza
    Home appliances specialist  
    Posts: 288
    Help: 37
    Rate: 94
    As for the diagrams, even the website does not have one. Well, here you have the answer why the values on these LEDs are different, as for me, the problem is still not on them. Desoldering and reassembly for someone who knows the operation of the soldering iron takes max 5 minutes with measurements, so only a little bit of willingness
  • #10 17164325
    jacentus
    Level 10  
    Posts: 5
    Rate: 1
    To sum up, the replacement of IGBTs, 22nF capacitors, the relay and the soldering of the path on the power module acting as a fuse. The board works and the suspected LEDs are OK.
| New topic
Report a violation of the law

Topic summary

LABEL_AI_GENERATED
The discussion revolves around troubleshooting a Beko HII 64500 FT induction hob that remains non-functional despite replacing IGBTs, transistors, and 22nF capacitors. The user suspects issues with diodes associated with the transistors but is uncertain about their specifications. Various suggestions include checking voltage measurements, inspecting the fuse on the PCB, and confirming the condition of the diodes. The user notes that the control system powered by the module is operational, but the absence of a schematic complicates diagnostics. Ultimately, the user has replaced several components and soldered paths on the power module, yet the problem persists.
AI summary based on the discussion. May contain errors.
ADVERTISEMENT