⟐ Answered 五月 02, 2026 at 8:22 GMT-7

⟐ Answered 三月 16, 2026 at 4:16 GMT-7

⟐ Commented 一月 04, 2026 at 22:37 GMT-7

⟐ Answered 十一月 10, 2025 at 6:38 GMT-7

维修需要100多，100多新的都买出来了，这个东西CPU坏的概率很低，起码给供电电路修好呀，我就说不修了，给我退回来了，有没用大神给个维修思路

后面尝试别的游戏，星露谷物语没卡过，三角洲卡过，双影奇境也卡过，正常办公用的时候没卡过，有一次看视频（腾讯视频看动漫）时候也卡死了。

用鲁大师监控温度似乎没啥问题，用window的内存检测也没啥问题，卡死时候看主板也没有亮故障灯。

下面是我的电脑配置，电脑是2023年7月底配好的，自己买的各个配件自己组装的，在2025年前都没什么问题，过完年以后就出现了问题。

⟐ Commented 三月 25, 2025 at 17:25 GMT-7

⟐ Answered 三月 20, 2025 at 6:09 GMT-7

⟐ Answered 三月 16, 2025 at 23:22 GMT-7

⟐ Answer accepted 六月 27, 2026 at 4:49 GMT-7

⟐ Commented 六月 26, 2026 at 21:50 GMT-7

I bought the HP OfficeJet Pro 8620 printer in 2015 and up until december 2019 it has worked perfectly. One day out of the blue, I recieved this error message: “The printhead appears to be missing, not detected, or incorrectly installed. Error code 0xc19a0023" . I reseated the printhead one time and the printer worked until next day, when the same error appeared. I followed HP’s troubleshooting steps 1. reset printer 2. reseat printhead 3 times 3. updating firmware, but no luck. I’ve disassembled the printhead and cleaned the contacts on PC board. I ordered this cleaning solution and cleaned the printhead, both soaking in the solution for some time and pushing the solution through. No luck. I then went on to buy this new print head from eBay, but the new one instantly gave the same error message.

Then I continued to troubleshoot some more. Since the new printhead failed I thought maybe the problem is in the printhead carriage inside the printer. I disassembled it and cleaned the contacts on the PC board. (This one is also possible to buy on aliexpress , but I’ve not done it). Everything looks ok. All the pins are undamaged. I’ve reset the CMOS battery on the main board, disconnected all cables and checked the cables specificly for the printhead carriage. I don’t have the equipment or knowledge to test if the cables actually work, but everything looks ok. Still getting the error message.

One last thing that I came by today on this page is that it might be the unoriginal ink that I installed for the first time last time I replaced my cartridges (about 3 months ago, I switched the last color from original HP to unoriginal). Could it really be the problem? Is it still worth a try to buy new original HP cartridges and will it even fix the problem? Or is the damage done already and not reversable? I’m a bit hesitant to invest more on this printer since I already blew up 72 EUR for the printhead…. Returning the printhead to China from where I live costs almost 40 EUR so it’s not worth the refund.

EDIT: I found an official statement from HP about a new firmware update removing Dynamic Security Feature which makes the printer fail when unoriginal ink is installed. However they explicitly say it’s only connected to a cartridge error message. Other error messages are not related. So in theory I’ve already solved this issue, when I updated my printer to the newest firmware early in the troubleshooting process. Both printheads give the same error message. This decreses my belief in buying new original ink to fix the problem…

EDIT 2: I found the old original HP empty cartridges I had before and installed them just to see if it would remove the error, but it didn’t. So now I don’t have to waste money on buying new ink at least…

Or am I missing something else? Thanks for helping out!

⟐ Commented 六月 26, 2026 at 20:53 GMT-7

⟐ Answered 六月 26, 2026 at 5:44 GMT-7

I have a multimeter and would like help identifying potential blown SMD fuses, bad voltage rail test points, or common failure points on the motherboard that would cause a total power failure despite having a good battery voltage.

I've attached high-resolution photos of the motherboard (front and back) and the USB-C daughterboard. Any guidance on where to probe would be greatly appreciated!

⟐ Commented 六月 26, 2026 at 5:14 GMT-7

lapcare DCX-A101 chillmate laptop cooler

⟐ Answered 六月 26, 2026 at 3:45 GMT-7

now all the lights are blinking, and I don't know what else to try.

Thinks I tried:

Take out power supply

using epson adjustment tried almost every test and all failed to fix it

⟐ Answered 六月 26, 2026 at 1:17 GMT-7