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NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement

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  • #271 18507892
    mipix
    Level 38  
    For easier soldering it is worth extending the holes.

    Printed circuit board with copper pattern.
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  • #272 18507901
    Smoczy
    Level 19  
    At current soldering points, soldering is not a problem, but yes, it would probably be easier as if they were oval. However, I think that the installation of this solution is easier, faster and does not require such soldering skills as when making an amigos solution, but I can be wrong.
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  • #273 18507937
    amigos
    Level 16  
    Smoczy wrote:
    With current pads, soldering is not a problem, but yes, it would probably be easier, if they were oval. However, I think that the installation of this solution is easier, faster and does not require such soldering skills as when making an amigos solution, but I can be wrong.

    You're right. Certainly your solution is easier to solder. I thought about it before using sst39vf040 as in post # 153 https://www.elektroda.pl/rtvforum/topic3435827-150.html#17978586. However, I went towards a comprehensive board with a power block. The issue of holes in your design is rather irrelevant. And so you need to desolder the original board to solder the new display, so in my opinion it may well be full holes that we put on the pins and solder :)

    Added after 1 [hours] 1 [minutes]:

    j4rek wrote:
    Attached, project gerberas generated in Altium Designer.

    I have to admit it looks cool. You can see that you have mastered the tile design. I'm impressed. You don't have a plate to take a photo?
  • #274 18508253
    Luczi04031986
    Level 6  
    Hello
    I have the same problem with Nivon 831 :-(
    Unfortunately, I am not an electronics engineer and I cannot understand it myself.
    Would any of the Forumers undertake to make my display for a reasonable fee?

    Please help.
    The new original display costs PLN 840, so it doesn't pay off completely and there are no used parts :-(

    I am asking for help - I am from WLKP, but we can understand mail order.
    Cash on account ;-)

    Once again please help.
  • #275 18508590
    j4rek
    Level 19  
    As I wrote earlier, I didn't order tiles. I only ordered a display from China and I will do a repair to my friend - a spider conversion :) in the variant with flash memory in PLCC32 housing plus gateways for WR # signal delay.

    In addition, I considered and designed a version only on the logic to change the command in the form of a small solder plate to the 14-pin ladder, something like the Dragon user. In this case, 2 pins D0 and WR # should also be attached to this original laminate with the screen.
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  • #276 18508646
    amigos
    Level 16  
    Well, you did a nice job that you will practically not use ;) Wait, I'll order tiles. If they come and work, I will send you one to play with. After all, PLN 30 for 5 items is not a fortune, and I'm curious how they will fit into the module.
    I immediately point out to others that I do not sell. Everyone can order. I will definitely let the forum know if they work.
  • #277 18509093
    j4rek
    Level 19  
    As if I had the original Nivon pcb live, it would be possible to measure the exact position of the holes for the pins with a caliper and include them in the pcb design (add holes / indentations). The current shape / size is transferred from this project to Eagle.


    Below is the mini version and visualization as it can be connected with a ladder between the original boards (you need to connect pins 5 and 7 of the display with points X1.5 and X1.7 respectively).

    NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement

    NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement
  • #278 18510016
    amigos
    Level 16  
    Cool. Are these screenshots of this Altium program? Is he paid? What libraries have you already used or did you overdone? Will you throw gerberas into this last project?
  • #280 18520163
    Stat69
    Level 2  
    Luczi04031986 wrote:
    The new original display costs PLN 840, so it doesn't pay off completely and there are no used parts :-(

    Hello
    Where did you find the display for the price?
    Why do you think it is not worth replacing with a new one? :D
  • #281 18528414
    HarryPar
    Level 2  
    I assembled everything according to the instructions from Amigo (on 3 boards!) And checked everything x times, but unfortunately without success. Amigos: I only measure 1.95V at pins 1 and 2 of JP1, but it should be 3.3V, right?
    Where could the fault be?
    I'm very grateful for every tip.
  • #282 18530468
    amigos
    Level 16  
    j4rek wrote:
    As if I had the original Nivon pcb live, it would be possible to measure the exact position of the holes for the pins with a caliper and include them in the pcb design (add holes / indentations). The current shape / size is transferred from this project to Eagle.


    Below is the mini version and visualization as it can be connected with a ladder between the original boards (you need to connect pins 5 and 7 of the display with points X1.5 and X1.7 respectively).

    NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement

    NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement


    Can you submit a schematic for this project? I see that the connections to U2 and U3 are modified and I have a signal from a boy from abroad that he ordered such a board and the display does not want to start. The large TPS board seems ok, but I don't know if anything is lost here during the changes.
  • #283 18530502
    j4rek
    Level 19  
    The diagram is in post # 279. The connections on the gates are swapped, maybe there is a problem with soldering or some chip is damaged.
  • #284 18530529
    amigos
    Level 16  
    I was talking about these changes on gates on 4071 and 4078, but since you say that it's intentional, it's ok. In the diagram it would be easier to catch something than analyzing the paths in the picture ;) I haven't received the pcb myself, so I can't help him and confirm that it has to work :) Thanks for the quick reply.
  • #285 18530592
    j4rek
    Level 19  
    CD4071 is 4 the same OR gates, and CD4078 is OR which has 8 inputs and you can connect signals there in any order. The connections seem to be ok. The chip must after the detection of sequence A0 (1010 0000) put on bit D0 '1', i.e. SSD1305 will receive command A1 (1010 0001).
  • #286 18530632
    amigos
    Level 16  
    Ok. The boy says that the display remains dark, so I do not know if this is not a problem with the backlight power supply on the original board. He must be patient until I get ordered pcb.
  • #287 18530692
    j4rek
    Level 19  
    I can add that 2 days ago I repaired the display at a friend. The system was made on a breadboard on a flash memory in a PLCC32 housing and 3 AND gates to delay the WR signal. SSD1305Z display from China.
  • #289 18543957
    tygrysco
    Level 11  
    Hello colleagues
    I would like to thank my colleagues from the forum for all tips for repairing the Nivon 830.
    First of all, nods to Amigos and Satanist :)
    Generally, soldering without a magnifying glass is quite difficult but feasible :)
    I failed the first tile, but due to the confusion of the pandemic, I reheated the topic and from tomorrow you can enjoy coffee from express. (You just have to give yourself time :) )
    Regards
    NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement
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  • #290 18544306
    Smoczy
    Level 19  
    j4rek wrote:
    I can add that 2 days ago I repaired the display at a friend's. The system was made in a 'spider' on a flash memory in a PLCC32 housing and 3 AND gates to delay the WR signal. SSD1305Z display from China.

    You do not need to add an external circuit to delay the signal wr.
    This can be done on memory chip.
  • #291 18556294
    Lethieg
    Level 2  
    Hello, I have a magimix coffee maker same as Nivona
    I have the same problem as you with the screen, I read all your messages on the forum but I have the impression not to have the same printed circuit board. is there someone capable of explaining to me in detail what i need to change, or else is that i can simply change the screen that can be ordered from alie.
    Thank you for your help
    Green circuit board with markings and electronic components lying on a laptop. Electronic display with a circuit board on a laptop. Printed circuit board from a Magimix coffee machine resting on a laptop.
  • #292 18558771
    amigos
    Level 16  
    You can see that it is the same display as in the Nivon EF691. Buy at ali SSD1305 as we have given. For the image to be ok, one of the modifications is necessary. You have everything described.
  • #293 18558775
    lagren
    Level 1  
    Where can you buy all the components for soldering onto the board? Would you recommend any place on the web?
  • #294 18564171
    Stat69
    Level 2  
    I just came from the site, everything flashes and glows.
    All with cleaning 630 PLN.
    "Regenerated" display, whatever that means :D
  • #295 18573516
    damek4
    Level 11  
    Green printed circuit board with electronic components.
    What display do you suggest for this project, SSD1305 or some other?
  • #296 18573539
    amigos
    Level 16  
    For what you need in the picture SPD0301 display with 24-pin tape. There will be a line break that we described on the forum. This does not interfere with the functioning of the espresso machine.
  • #298 18573886
    amigos
    Level 16  
    Yes. I used to take it from them too.
  • #299 18588916
    damek4
    Level 11  
    NIVONA Caferomatica 830 Coffee Machine: Damaged Display Repair, AliExpress Replacement
    Thanks to amigos and satanistik the machine works again. Only something seems to me a little weak saints, it is possible that it goes on display.
  • #300 18588953
    amigos
    Level 16  
    If it is weak, correct February on the inverter block. Maybe it gives little tension, because it contains or does not touch something. In particular, improve soldering on the TPS system.
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Topic summary

The discussion addresses the issue of a damaged OLED display in the NIVONA Caferomatica 830 coffee machine, with the original replacement cost around PLN 900-1000. Users confirm the original display uses the SSD1303T10 driver and is a 128x64 pixel OLED module with a 31-pin connector, which is now rare and discontinued. Attempts to find direct substitutes on AliExpress or other markets largely failed due to incompatible controllers, pin layouts, or mirrored image outputs. Alternative displays such as BL12864G (yellow OLED) from SOS electronic (Slovakia) and similar models from Japan or Russia have been used successfully but require delicate desoldering and soldering of the 31-pin ribbon cable, a process recommended only for skilled technicians. Some users developed or are developing adapter boards to use newer SSD1305, SSD1309, or SPD0301 controller displays, which have different pinouts and may show mirrored images or missing columns, requiring hardware or firmware adaptations. The community shares detailed disassembly instructions for accessing the display module, emphasizing careful removal of the front panel and soldering challenges. Some users report successful repairs by cleaning pins or replacing capacitors and diodes on the motherboard. The discussion also highlights the scarcity of original or compatible displays, the need for specialized repair skills, and ongoing efforts to create adapters for newer OLED modules to extend the machine's lifespan.
Summary generated by the language model.
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