Kenapa samsung saya tdk bsa ngecas Why my samsung can't charge

The OEM Samsung Service Manual can be found here: Samsung SM-SMF700U Service Manual.pdf

In general, if your phone is not charging you should try some initial troubleshooting steps to narrow down the cause:

1. Try a different charging cable that is known to be working (this is a cable you have seen work to charge another device)
2. Try a different charging brick that is known to be working (this is charging brick that you have seen work to charge another device)
3. Try both known-good charging cable and brick on the device
4. Try the wireless charging functionality

The most cost-effective (cheap) repair will be soldering if the issue is related to a faulty component. This is an extremely technical repair, so unless you are already skilled or confident in your ability to perform this service on your own I would recommend taking it to a repair shop that does microsoldering.

@amal23933 besides all those great things suggested in the prior answer, I would advices a bit more troubleshooting. Get an USB ammeter and plug it in between your phone and the charger. See how many amps your phone pulls from the charger. If it does not pull any or not enough, the issue could simply be a bad charging board. Schematics are available and if you want to perform a component level repair, this can be done. In your case however I would suggest simply to change your charging board first. You can use the SM provided in the prior answer to disassemble your phone and then replace the charging board (sub board). Of course, you also want to take a look at the teardown and see if that all makes sense to you

You are looking for something like this Example only and not an endorsement for this seller). The boards are readily available at many other places.

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@amal23933 Selain semua langkah hebat yang disarankan dalam jawaban sebelumnya, saya akan memberikan saran untuk sedikit pemecahan masalah. Ambil amperemeter USB dan colokkan di antara ponsel dan pengisi daya. Lihat berapa ampere yang ditarik oleh ponsel Anda dari pengisi daya. Jika tidak ada atau tidak cukup, masalahnya bisa jadi karena papan pengisi daya yang buruk. Skema tersedia dan jika Anda ingin melakukan perbaikan pada tingkat komponen, hal ini dapat dilakukan. Namun dalam kasus Anda, saya sarankan untuk mengganti papan pengisian daya Anda terlebih dahulu. Anda dapat menggunakan SM yang disediakan dalam jawaban sebelumnya untuk membongkar ponsel Anda dan kemudian mengganti papan pengisian daya (sub board). Tentu saja, Anda juga ingin melihat pembongkaran dan melihat apakah itu semua masuk akal bagi Anda Samsung Galaxy Z Flip Teardown

Anda mencari sesuatu seperti ini Hanya contoh dan bukan dukungan untuk penjual ini). Papan ini sudah tersedia di banyak tempat lain.