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Help me please erro [0x30405004] USB burning tool

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    #76
    Hmm, didn't know about VCC, will try without it.
    Tried without soldering but the holes are little bit larger than pins and loosing connection when moving, so it's better when it's soldered.

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      #77
      I do not solder the pins mainly because of the manufacturer's warranty. When connecting, it is usually sufficient to keep the cable slightly taut.

      P.S. and please try again with the u-boot, 816Mhz, which I have sent you before the original u-boot.

      Comment


        #78
        Do you mean u-boot from post #50?

        Comment


          #79
          About capacitor locations... Under the EMI shielding. Mine was held by bent tabs. Some are soldered.

          Basically if you can find rectangular grey/green or amber blocks that have solder capped ends, the larger sized ones are usually grounded on one end, and tied to the input voltage required by the device operation.

          I think mine was heat related, as the operation worked for hours on end, until left over night, and the box locked up at the home screen. Once left over a day disconnected, I was able to flash and boot once more and configure for a days worth of function. Just to return with a frozen box at the home screen once more over night. Just progressively got to the point of no boot from SD card, gets partial screen initialisation with no activity, so I know the boot loader is trying to load code, just RAM is faulty, either by chip shift, cold fusion of the solder paste or I had a fuse blow to drive memory. Problem is my fuse, if there is one, looks like a chip resistor. Which may be the case. Some manufacturers use 0 ohm chip resistors as fuses. I just don't have probes small enough to test in some areas. Plus trying to replace something as small as a grain of sand is impossible for me, unless I go back into my old job. HA!

          If it is under warranty then send it up back under RMA. I am on fiddling so far, as there is no other options, but to do all the odd hardware repair tricks before it becomes scrap.

          Since all the power outputs are good, I can at least convert it into a power supply for testing, or driving hobby circuits. Just will have to heat it up and pull the big chips that are not needed, and enable the switched supply voltage stages to function, as the CPU controls some of the stages, for sleep mode.

          Comment


            #80
            Do you mean u-boot from post #50?
            yes

            Comment


              #81
              Originally posted by Nebojsa View Post
              Yes, you are talking about reflowing.
              I have the heat gun and I tried to reflow couple of times, graphic cards, motherboards, but without success. I even tried oven method. Made 4 balls of aluminum foil, put the graphics card on it, just make sure that is on ideal horizontal position, heat the oven on 250℉ (about120℃) and let it bake about 10 minutes. After, let it cool down for hour or so. For me, this never worked.
              I take my laptop motherboard that stops displaying picture to repair shop and they repaired it with success, so it can be done, I know.
              With help of bumerc I think that I have exhausted every software method for repair, so maybe it's time for hardware.
              I may try to reflow memory chips with heat gun and see what happens.
              I will post the pictures of motherboard, can you point out which capacitors do you mean?



              A couple of things. First you need to take off those aluminum plates (EMI shielding) off the top and bottom they should come off pretty easy. At first I thought they were soldered on but they're not. Just get a plastic spudger or guitar pick and pick up carefully you'll see it'll come up pretty easy after that. Then you'll see a lot more capaciters and you'll see the ram on bottom and top under those shields. I too just got a uart-usb adapter that bumerc recommended to me. I noticed when I first try using the uart-usb adapter I actually had inconsistent readings from box when I connected the VCC 3.3V pin, and when I disconnected that cable it worked a lot better. You only need the 3 cables GND, RXD, & TXD nothing else. Maybe this would help too.

              Comment


                #82
                Well, this escalated quickly...
                By the time I finished writing my post and try to help out you guys already posted like 4 more. LOL!!!

                Comment


                  #83
                  He he, great!
                  bumerc can you please re-upload u-boot, it's on my other pc at home and I'm not, like to tried it now.
                  OK, I removed shield, it's look like this:



                  Comment


                    #84
                    u-boot.img.zip

                    Comment


                      #85
                      Thanks.
                      Tried with this u-boot but all the same:

                      GXM:BL1:dc8b51:76f1a5;FEAT:ADFC318C:80;POC:2;RCY:0 ;USB:0;EMMC:0;READ:800;SD:0;READ:0;0.0;CHK:0;
                      no sdio debug board detected
                      TE: 147058

                      BL2 Built : 11:58:42, May 27 2017.
                      gxl gc3c9a84 - xiaobo.gu@droid05

                      set vdd cpu_a to 1120 mv
                      set vdd cpu_b to 1050 mv
                      set vddee to 1000 mv
                      Board ID = 6
                      CPU clk: 1200MHz
                      DQS-corr enabled
                      DDR scramble enabled
                      DDR4 chl: Rank0+1 @ 816MHz
                      Rank0: 2048MB(auto)-2T-18
                      Rank1: 1024MB(auto)-2T-18
                      DataBus test pass!
                      AddrBus test pass!
                      Load fip header from SD, src: 0x0000c200, des: 0x01400000, size: 0x00004000
                      New fip structure!
                      Load bl30 from SD, src: 0x00010200, des: 0x01100000, size: 0x0000d600
                      Load bl31 from SD, src: 0x00020200, des: 0x05100000, size: 0x00018400
                      Load bl33 from SD, src: 0x0003c200, des: 0x01000000, size: 0x00066200
                      ▒GXM:BL1:dc8b51:76f1a5;FEAT:ADFC318C:80;POC:2;RCY: 0;USB:0;EMMC:0;READ:800;SD:0;READ:0;0.0;CHK:0;
                      no sdio debug board detected
                      TE: 147075

                      BL2 Built : 11:58:42, May 27 2017.
                      gxl gc3c9a84 - xiaobo.gu@droid05

                      set vdd cpu_a to 1120 mv
                      set vdd cpu_b to 1050 mv
                      set vddee to 1000 mv
                      Board ID = 6
                      CPU clk: 1200MHz
                      DQS-corr enabled
                      DDR scramble enabled
                      DDR4 chl: Rank0+1 @ 816MHz
                      Rank0: 2048MB(auto)-2T-18
                      Rank1: 1024MB(auto)-2T-18
                      DataBus test pass!
                      AddrBus test pass!
                      Load fip header from SD, src: 0x0000c200, des: 0x01400000, size: 0x00004000
                      New fip structure!
                      Load bl30 from SD, src: 0x00010200, des: 0x01100000, size: 0x0000d600
                      Load bl31 from SD, src: 0x00020200, des: 0x05100000, size: 0x00018400
                      Load bl33 from SD, src: 0x0003c200, des: 0x01000000, size: 0x00066200
                      Y▒▒GXM:BL1:dc8b51:76f1a5;FEAT:ADFC318C:80;POC:2;RC Y:0;USB:0;EMMC:0;READ:800;SD:0;READ:0;0.0;CHK:0;
                      no sdio debug board detected
                      TE: 147173

                      BL2 Built : 11:58:42, May 27 2017.
                      gxl gc3c9a84 - xiaobo.gu@droid05

                      set vdd cpu_a to 1120 mv
                      set vdd cpu_b to 1050 mv
                      set vddee to 1000 mv
                      Board ID = 6
                      CPU clk: 1200MHz
                      DQS-corr enabled
                      DDR scramble enabled
                      DDR4 chl: Rank0+1 @ 816MHz
                      Rank0: 2048MB(auto)-2T-18
                      Rank1: 1024MB(auto)-2T-18
                      DataBus test pass!
                      AddrBus test pass!
                      Load fip header from SD, src: 0x0000c200, des: 0x01400000, size: 0x00004000
                      New fip structure!
                      Load bl30 from SD, src: 0x00010200, des: 0x01100000, size: 0x0000d600
                      Load bl31 from SD, src: 0x00020200, des: 0x05100000, size: 0x00018400
                      Load bl33 from SD, src: 0x0003c200, des: 0x01000000, size: 0x00066200




                      Comment


                        #86
                        Another thing.
                        I unplugged VCC but the PC doesn't recognized the UART, "unrecognized device".
                        When i plug back VCC everything back to normal.

                        Just tried to re-flow with heat gun, nothing changed.
                        Last edited by Nebojsa; 06-13-2018, 09:10.

                        Comment


                          #87
                          Originally posted by Nebojsa View Post
                          Another thing.
                          I unplugged VCC but the PC doesn't recognized the UART, "unrecognized device".
                          When i plug back VCC everything back to normal.

                          Just tried to re-flow with heat gun, nothing changed.
                          It kind of sounds to me like you might not be getting the right amount of voltage to the box. You might have a defective ac adapter.

                          Comment


                            #88
                            Something is not right here, it has to work without VCC. Do you use Uart to USB adapter? Can you please take a picture?

                            Comment


                              #89
                              Adapter is ok, I tried 3-4 different adapters, all the same. This adapter works perfectly fine on my second, working box.



                              Comment


                                #90
                                This adapter works perfectly fine on my second, working box.
                                even without VCC? The fact is, it also has to work without VCC.

                                Comment

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