jarjarbeens Posted January 17, 2021 Posted January 17, 2021 Hello all, I few days a go, I decided to update my Axpert 5Kw VM III firmware, but unexpectectly I got an error in the middle of the remote panel reflash process. (PC via RS232 communication cable) Now my panel is not responding, meaning that nothing appears in my LCD and none of the buttons, including power switch are working. Due to current issue my inverter will not even boot-up, since probably the remote panel is not sending any commands to internal inverter board to initiate power up sequence. Is there any way to restore/reflash the remote panel thought any other method? Thanks in advance. Quote
Coulomb Posted January 18, 2021 Posted January 18, 2021 13 hours ago, jarjarbeens said: unexpectectly I got an error in the middle of the remote panel reflash process. (PC via RS232 communication cable) Now my panel is not responding Don't panic. I assume it was the main DSP firmware that you were updating; I don't know what happens to the display when the DSP is just running the bootstrap loader. In any case, follow the steps in this post: If you think your inverter is bricked. Quote
jarjarbeens Posted January 18, 2021 Author Posted January 18, 2021 Hello @Coulomb, Thank you for your more than welcome feedback. I've tried all combinations with no success. It is like the remote control display is totally dead and no answer/communication with it is possible. Tried flashing both remote panel and main firmware using SW found here: Really I can't believe that there is no such other way to restore it to factory default SW. Quote
Calvin Posted January 18, 2021 Posted January 18, 2021 See the thread below - it was the same issue - a Remote Display that "died" during an upgrade. https://powerforum.co.za/topic/3759-axpert-king-inverter-firmware/page/8/ Quote
Jacques69 Posted January 18, 2021 Posted January 18, 2021 I had the same happen to me. I just kept on retrying and it finshed loading. Took long stopping every 10 or 20% but it kept on where it left of. My screen was also dead and inverter just making tiking sound. But when it came to 100% all was fine Quote
Coulomb Posted January 19, 2021 Posted January 19, 2021 7 hours ago, jarjarbeens said: Really I can't believe that there is no such other way to restore it to factory default SW. There isn't room for a spare copy of the firmware. By the nature of flash memory, before you start writing the new firmware, you have to erase the old firmware. Quote
jarjarbeens Posted January 19, 2021 Author Posted January 19, 2021 Thank you @Coulomb, @Jacques69 and @Calvin for your comments/feedback. The biggest difference which I'm seeing, from what people have experiences and posted is that when they are trying to flash again LCD there is a sort existing communication happening between remote panel and PC. Sometimes this seem might fail but by retrying finally correct flashing is achieved. In my case this is not happening. I can clearly see that COM port is openned (selected approapiate COM numebr in Remote Panel_ReflashTool), but after some seconds, more or less 1 min, I get error message that there is no answer from UPS. No other methoud available. Just in case, I ordered new RS232 - USB converter to discart any cable communication issue. Quote
jarjarbeens Posted January 19, 2021 Author Posted January 19, 2021 Hello all, Good news. Finally succeded to re-flash my remote panel and make it work again!!! These are the steps that I followed. 1 - Connect all (PC to Inverter via RS232 to USB cable) with no power supply given to the Inverter (No battery and No AC IN). 2 - Have RemotePanel_Reflash_MCU SW prepared on PC. (Correct COM port selected) 3 - Provide power supply to inverter (AC In) and immediately (only few seconds after) click on "Update MCU" button in RemotePanel_Reflash_MCU SW. After steps 3 I started seeing that flash started. More or less after 10 minutes the flash was completed and LCD remote panel was working again. Thank you guys for the support given. Probably this thread will be useable for someone that will experience same issue in the future. aamilev 1 Quote
Coulomb Posted January 20, 2021 Posted January 20, 2021 11 hours ago, jarjarbeens said: Probably this thread will be useable for someone that will experience same issue in the future. I'm sure it will. I've taken the liberty of linking to it from my If You Think your Inverter Has Been Bricked post. Quote
misiekgab Posted June 30, 2021 Posted June 30, 2021 Hello, can this procedure be applied to the axpert king, turn on the AC power with the batteries disconnected? Quote
misiekgab Posted July 1, 2021 Posted July 1, 2021 I tried the method of my friend jarjarbeens but to no avail, if someone has any idea about the black display, please help, the inverter works, I charge the batteries and responds to the on / off switch on the display Quote
Coulomb Posted July 2, 2021 Posted July 2, 2021 (edited) 9 hours ago, misiekgab said: if someone has any idea about the black display I assume that when the inverter powers up (fans to full speed briefly), you don't get any LEDs come on the remote display, or backlight from the display, after a delay of 1-2 seconds? Next thing might be an RJ-45 breakout box or similar, to check for power from the inverter. With respect to pin 1 ("GND"), you should see +12 V at pin 2, and -12 V at pin 3. Pin 6 should have a negative voltage, I measured -14 V on mine, being the RS-232 data from the inverter. Pin 5 is data from the removable display to the inverter, which read as just slightly positive for me with the removable display not connected. If all the above are good, it seems you should see some activity on the display if it's not faulty. There are SMD fuses on the display's PCB on the +12 and -12 V signals (pins 2 and 3 respectively). It would be worth checking them for conductivity, and if open circuit, check for a short or low resistance on the other side of the fuse(s). The LC display connects to the main PCB via 6 pins (CN6 on the main PCB). Check for bent pins and alignment. The removable display comes apart easily with 4 Philips screws. Fuse locations are below; F3 is for +12 V, which likely powers most of the board via the 7805 regulator on the other side of the board. Edited July 2, 2021 by Coulomb Quote
misiekgab Posted July 3, 2021 Posted July 3, 2021 On 2.07.2021 at 05:51, Coulomb said: Zakładam, że po włączeniu falownika (wentylatory na krótko na pełne obroty) nie pojawiają się żadne diody na zdalnym wyświetlaczu, ani podświetlenie wyświetlacza, po opóźnieniu 1-2 sekund? Następną rzeczą może być skrzynka zaciskowa RJ-45 lub podobna, aby sprawdzić zasilanie z falownika. Jeśli chodzi o pin 1 ("GND"), powinieneś zobaczyć +12 V na pinie 2 i -12 V na pinie 3. Pin 6 powinien mieć napięcie ujemne, zmierzyłem -14 V na moim, będącym RS-232 dane z falownika. Pin 5 to dane z wymiennego wyświetlacza do falownika, co dla mnie odczytało się jako lekko pozytywne przy niepodłączonym wymiennym wyświetlaczu. Jeśli wszystkie powyższe są dobre, wygląda na to, że powinieneś zobaczyć jakąś aktywność na wyświetlaczu, jeśli nie jest uszkodzony. Na płytce wyświetlacza znajdują się bezpieczniki SMD na sygnałach +12 i -12 V (odpowiednio piny 2 i 3). Warto sprawdzić je pod kątem przewodności, a jeśli obwód jest otwarty, sprawdź, czy nie ma zwarcia lub niskiej rezystancji po drugiej stronie bezpiecznika(ów). Wyświetlacz LC łączy się z główną płytką drukowaną za pomocą 6 pinów (CN6 na głównej płytce drukowanej). Sprawdź wygięte sworznie i wyrównanie. Zdejmowany wyświetlacz można łatwo rozłożyć za pomocą 4 śrub Philips. Lokalizacje bezpieczników są poniżej; F3 oznacza napięcie +12 V, które prawdopodobnie zasila większość płyty poprzez regulator 7805 po drugiej stronie płyty. The fuses are checked, the voltages are there, I replaced the 817 optocouplers and 100uf capacitors to be sure, I have a suspicion of the processor because there is also no communication between pc and bluetooth. Quote
Coulomb Posted July 4, 2021 Posted July 4, 2021 On 2021/07/03 at 7:23 PM, misiekgab said: I have a suspicion of the processor... Dang. Sounds like you'll need a new removable display, or have it replaced under warranty if possible. If your inverter supplier can't sell you one, you might be able to get one from Ebay/Ali Express/etc. Quote
fvanz Posted March 4, 2022 Posted March 4, 2022 Hey guys Thanks a million! I had the same experience with my 48V VMIII tonight. Updated main FW to 41.17 as per link in another thread on this forum, but display was not working after the update. Tried what jarjarbeens said with no success initially. I Just kept trying and trying and FINALLY got communication between the flashing tool and the inverter after about 20 attempts, trying different sequences. When I powered the inverter on after the Main FW update, you could hear relays clicking with the fans on. The fans would go off after a few seconds, with some relay clicking that followed. I followed what Jajarbeens posted above. The only thing I can add is that the power button needs to be IN (on) on the removable display. I got success when I pressed "Update MCU" on the flash tool about 3-4 seconds after I switched the AC power to the inverter on, just before the fans stopped. I figure that would before the normal starting 6 second countdown elapsed. Took about 20 seconds and then the flash started. Whole flash took 9 minutes and the display came on immediately after the flash completed. Restarted the inverter and confirmed that the Main FW was indeed 41.17, and the MCU version is 02.66 (that coulomb provided). Once again thank you for all the generous information on this forum. bicajos and mihaigsm2003 2 Quote
mihaigsm2003 Posted September 28, 2022 Posted September 28, 2022 On 2021/01/19 at 8:10 PM, jarjarbeens said: Hello all, Good news. Finally succeded to re-flash my remote panel and make it work again!!! These are the steps that I followed. 1 - Connect all (PC to Inverter via RS232 to USB cable) with no power supply given to the Inverter (No battery and No AC IN). 2 - Have RemotePanel_Reflash_MCU SW prepared on PC. (Correct COM port selected) 3 - Provide power supply to inverter (AC In) and immediately (only few seconds after) click on "Update MCU" button in RemotePanel_Reflash_MCU SW. After steps 3 I started seeing that flash started. More or less after 10 minutes the flash was completed and LCD remote panel was working again. Thank you guys for the support given. Probably this thread will be useable for someone that will experience same issue in the future. This procedure work only for display MCU, not work for DSP Quote
razzor13bt Posted September 29, 2022 Posted September 29, 2022 I was updating my display and got worried it was stuffed. You must leave to it alone for 10-15mins in its blank state. I had to take a call after trying a good few times . the call took a while and when i went back i rebooted the King inverter and it worked . Coulomb 1 Quote
Coulomb Posted September 29, 2022 Posted September 29, 2022 (edited) On 2022/09/29 at 11:26 PM, razzor13bt said: You must leave to it alone for 10-15mins in its blank state. It takes about 8 minutes to reflash the firmware (some half a million characters at about 1 millisecond per character). Are you saying that in your case, it took an additional 10-15 minutes, while the display was blank, before the inverter came to life? Edit November 2022: There is an additional problem starting late 2022, possibly due to the continuing semiconductor shortage. Some displays now come with a GigaDevice processor, where the earlier displays used a ST Microsystems chip. There must be some subtle incompatibility between the two, such that if you flash the wrong firmware, the countdown stops at 2 and the display freezes. In these conditions, it IS possible to reflash the firmware, but the timing is important. Quoting Shadders in an AEVA forum post: "I found that you have to start the update when the countdown is on 4, roughly about 5s from turning on the inverter. It must be from a cold start i.e. the screen is powered down." [ Edit: GigaData -> GigaDevice ] Edited December 3, 2022 by Coulomb Quote
Sonoff Africa Posted October 10, 2022 Posted October 10, 2022 Hi My friend has a FCS-KING-5000W-MPPT and a BSLBATT and he would like them connected on the BMS coms cable, I think it will require flashing. He is happy to pay the call out fees and any labour charges, please let me know if there is any one that can do it. Aleks 0823793860 Quote
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