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Hello, I have a 16 inch MacBook Pro got it with bootloop at startup. At the first apple loading bar macbook was going off with high fan spin. I DFU restored with no issue and tried to install Sonoma. Downloaded with no issue and at less than half installation bar, the bootloop started. It...

Hello, I have a Macbook 16 inch stuck at 5V both the left ports UB400 - UB30 do bootloop The right ports U3100 - U3200 do not bootloop PPBUS is 12.29V PP3v3_G3H_RTC_X = 3.3V Which ports I have to replace? they are CD3217B12

Hello guys, There is a similar post on the forum with the same issue but not complete. I tried to reflow all the components around the UT330 but the issue is not fixed. After an SMC reset it works again till the next standby. Since I have 3 MacBooks with the same issue, I wish to understand...

Hello guys, I have an A2442 MacBook that randomly gets stuck at 5V and does not boot of course. If I unplug the battery it boots fine. Than I plug the battery back and also works fine till a point where it gets randomly stuck at 5V again. Sometimes after 1 week, others after 1 months. What...

Hello, I have an 820-00281 board with strage audio issue. The right speaker came I for replacement because of randomly loosing the tweet tones. Replaced with new one and is better but still sounds distorted. I replaced U6550 and is almost perfect but still has same distortion. Now after 1...

820-00850 board with 65Ω to ground on PP3V3_G3H. With plugged-in charger, I get 3.3V on PP3V3_G3H and 20V. Sometimes the short disappear and as soon I give power and remove it the short is back. When I inject 1-3V into PP3V3_G3H, I can not see any parts that gets even warm and takes...

i have an 820-00840 with only the upper usb port, both sides, doesn't read the data line. So, The problem persists on both port, in both connection ways? NO Do you get 5V at external USB device? No Visual inspection doesn't show anything obvious. Is this a cd3215 issue?

hello guys, I have an 820-02020 board with a little bit of water damage. The MacBook I got was booting but without backlight. I replaced UC300 because was missing P5VS2_BST for powering the backlight driver and that issues is fixed. The MacBook is now working and charging. The only...

Hello, got a MacBook A1990 from a customer the issue is thee left speaker. Basically he went to another repair store and they replaced 3 times the speaker and all of them sound distorted/buzzing. I found a little corrosion around U6400 and replaced it 2 time but I got no differences. What...

Hello guys I got an A2141 with a strange issue. Basically the machine can not install Ventura update. Everything works fine if I install Catalina or Big Sur. When I try to update to Ventura the machine or doesn't make the loading bar start, or fan spin for a sec at max spin and switch himself...

Hello guys, Got this 820-02020 for board repair and don't have much experience with M1 motherboard. It is stuck at 5V 0.00A and rarely moves to 0.08A with no short present on board. PPBUS_AON bouncing from 10V to 12.26V PP3v8_AON bouncing from 3.68V to 3.79V PP3v3_S2 bouncing from 2.80V to...

Hello, I have a water damaged 820-01521. After replacing U8200 and component around like R8060 - C8200 - C8201 and not the cd3215C00 I got the MacBook working. After a week I got it back, still charging on all the 4 combinations and fully working except for the data lines and hdmi from the...

Got MacBook Air A2337 with prohibition symbol. Thought was easy only to restore in DFU and indeed worked. After testing everything looked good till I put the machine in standby, I see again the restore symbol on the screen. Basically I realised that I can use normal the machine but as soon I...

Hello everyone. Got an 820-00923 for repair and can not find out how to fix it, without water damage PPbus_g3H 13V ALL_SYS_PWRGD 3.3V 3V3_S5 3.3V 3V3_SUS 3.3V L7270 1.04V PM_PWRBTN_L 3.3V PM_SLP_S3_L 3.3V PM_SLP_S4_L 3.3V pp1V8_s0 1.8V PPVCC_S0_CPU 0V PLT_RST_L 0V PPVCC_S0_CPU 0V...

Hello everybody I'm trying to fix an 820-00928 board. Maybe this is the weird board ever and in my opinion will be a no fix, but I would like to have an opinion from experts. The CPU and GPU gets hot, and machines takes up to 20V - 0.89. All the important signal are there at the same time...

Hello everyone I actually read on the forum that is possible to fix ssd shorted on the line PP2V5_NAND_SSD0. I had quite an high number of SSD short with no repair. mostly of them 15inch board o 16 inch board from 2017 - 2019. So my question is if there is a solutions to this and is possible...

Hello everyone, I'm new to this forum. I got an A1707 stuck in 5V and 0.1 A I do daily motherboard repair, but I really have to fix this one for data recovery so there is no better place to get replies than Rossmann forum. I have PP3V3_g3H 3.3V so present, and none of the CD3215 has loop going...