Basic Elektrical Repair

https://www.bunniestudios.com/blog/?p=3554 https://www.bunniestudios.com/blog/?page_id=1022 I copied and paste here in case the original blog go down. On MicroSD Problems The microSD ware for January 2010 was not an incidental post. It is actually snapshot of a much longer forensic investigation to find the ground truth behind some irregular Kingston memory cards. It all started back in December of 2009, when chumby was in the midst of production for the chumby One. A call came in from the floor noting that SMT yield had dropped dramatically on one lot, so I drove over to the building to have a look (this is the advantage of being in China during production — you can fix problems like this within the hour, before they become really serious issues). After poking and prodding a bit, I realized that all the units failing had Kingston microSD cards from a particular lot code. I had the factory pull the entire lot of microSD cards from the line and rework all the un...

过流保护背示灯   Overcurrent protection backlight (indicator) Guò liú bǎohù bèi shìdēng 恒流指示灯     Constant current indicator héng liú zhǐshì dēng 恒压指示灯     Constant voltage indicator héng yā zhǐshì dēng https://www.ntmobile.vn/nguon-5a-qj3005t 3005 mean 30v 5A

https://www.youtube.com/results?search_query=g570+board+repair Sorin soldering tutorials:: Basic Soldering, Advanced Soldering and Microsoldering oh, it included a fix on Samsung S7 ? IC MAX 77843 ? Amtech flux. Lenovo G570 motherboard test: You can search G570 schematic on the Internet. One of it is here: https://laptopblue.vn/download/1242/lenovo-g470-g570-compal-la6752p-la6754p-la6759p-laptop-schematics.html In PDF format. Other format like OpenBoardView I am not used since I have less experience/ time using these software. Sorin dialog a motherboard. A reapir lesson  He will draw something... TLD dạy phần nguồn No2 VN https://drive.google.com/file/d/0B6IqcVTk0jpYZlJMUWpSdE9uTlE/view Chạm B+ Buy stuffs: https://www.ntmobile.vn/son-den-relife-uvh900b https://www.ntmobile.vn/keo-t7000-50ml https://www.ntmobile.vn/panh-quick-cong-qa-15 https://www.ntmobile.vn/panh-cong-st-17 => this one like Sorin use. ht...

1.Hold button (rounded front button) to turn off device first. 2. Hold up (rounded front button) but in up position about 4 seconds, it will enter setup mode. 3. Change setup: It have some settings like unit meter/inch, error correction etc. I'm too lazy to make video about it. You know it take time to editing. I will update some photo about it and real use case review later. Notes: I've got problem when using this LS-P, I often press up button two time for distance measure, but one moment I have no idea why my unit have changed to inches which I am not familiar with. So I have dig into Internet without luck, then dive into  manual note in Chinese. After translation I found out how it work.    It's is some how like Hakko Fx-888 or some other device with limited button for user interface like Garmin eTrex... And from view of a software engineer, It not hard to understand the mechanism under it.

Rất nhiều dòng laptop có lỗi từ design hoặc vật liệu làm vỏ (A, B, C, D). Laptop đời cũ (pre-2010 ?) có vẻ chắc hơn, vỏ dày, nhựa vừa cứng vừa dẻo (bị méo chứ không bị bể). ... Fix 1. Keo nến 2. Keo AB 3. Keo 502, keo con chó ? 4. Thay mới => méo dùng vì đắt, ko sẵn hàng, nếu có vỏ tháo máy thì ok. 5. Bản lề nhìn cũng không phức tạp => nếu có máy móc chế được hay thậm chí dùng CNC cắt.     Theo tìm hiểu trên mạng thì keo AB hay Epoxy glue có vẻ chuẩn. Mua được keo chuẩn hay không thì là chuyện khác.     Keo nến theo ô người Nga này cũng ok ? Nhất là với mấy dòng lap giá rẻ. Mình cũng chỉ dân hobby rác rưởi nhưng ngay từ đầu cũng tính dùng keo nến tạm trước khi thử nghiệm keo AB ... Keo nến nó dẻo nên có thể tháo ra sửa lại nếu cần dùng máy sấy hay khò nóng vừa là bong.     Dùng vít, cái này chắc bán nhiều nhưng chưa có kinh nghiệm nơi mua cụ thể, trên mạng cũng nhiều nhưng nhìn ốc tiện không chất lượng lắm. Anyway ví...