Samsung Galaxy s7 edge not turning on

[ember granite]

Hi I got a Samsung Galaxy s7 edge that wasn't turning on so I opened it up, checked the battery which was dead so I cut off the connection cable and tested the motherboard with something, idk what it's called but basically it's a big box that mimick the battery with whatever voltage we want and I accidentally burned the cpu. So I bought one on eBay that was specified as dead for spare parts bank and the new motherboard and battery are charging and getting warm but the phone won't turn on

[ionic linden]

Chances are the for parts device you got also has something shot on the mainboard

I'd never suggest buying "for parts" devices if you can't microsolder and the damage is something that isn't fixable without soldering

You're going to want a multimeter and to test all of the connections on the board to find what is blown

[ember granite]

i know how to test a resistance but how do i test a chipset like a cpu??

[deft wagon]

Unless you know exactly what voltages to expect and which parts of a chipset are supposed to have continuity ain't no way you're going to figure it out with a multimeter alone. You would need a lot more sophisticated tools for a process like that.

[ember granite]

💀

[deft wagon]

There's a reason why "phone repair guys" always replace entire parts with brand new.

It's a nightmare to try and fix something like the mainboard if there are no obvious signs of something being broken.

Meaning the board has proper continuity along the traces and nothing looks blown.

[ember granite]

yeah but i paid 20 bux for the spare bank and for 10 more i'd have one that still works so i think it's fucked at this point

(i'm not dum i did it because i like to fix stuff)

[deft wagon]

If nothing else this will serve as a learning experience, I can understand the desire to repair stuff and understand how they work.

But always do the repair properly, you took a gamble when you bought that "for parts" phone.

[deft wagon]

This doesn't just apply for phones, it applies to everything you repair. When you buy something for parts, you're taking a gamble on what is still functional in that specific device. If you know what the issue is, you should always buy the exact replacement part you need.

[ember granite]

a motherboard on its own was about 40-50 bux :')

[deft wagon]

Yeah and how's that feel now that you spent a 20 and still have a broken phone?

You took a risk and it didn't pay off.

[ember granite]

Why does it sound like you're shaming me? :|

And I don't really care since it was my dad that paid for it actually

[ember granite]

That's why we call it a risk ig

And the phone itself was my stepfather's old one anyway

[deft wagon]

Because to me it sounds like you're trying to justify why you didn't do it right in the first place and I honestly reeeaally don't appreciate it.

[ember granite]

I don't have to justify myself for trying to fix stuff and learn from what I do 🤨

[deft wagon]

Then why even make the argument in the first place?

It's not like the phone is suddenly going to get repaired from that.

[ember granite]

Idk that just the way I express myself, it doesn't have to do anything with the phone ;-;

I don't really care about the phone it was just a project

[deft wagon]

Well I hope you learned from this

[ember granite]

I got phones that works if i need

[ember granite]

I did, thanks :)

[deft wagon]

Better add a solved tag btw.

[ember granite]

Ye

[deft wagon]

There's not much that can be done here.

[ionic linden]

This is also why you will very commonly see for parts devices in giant packs (say 10 nintendo switches for example), it gives people way more boards to use as "donor" boards and increses the likelyhood of actually having functioning parts to use for replacements

oops i forgor to not ping

[deft wagon]

You can ping me as much as you want bro

[ionic linden]

LETS GOOOOO

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