D
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OP
Hello, I have some dead NDSL PCBs that I wish I could repair, it's the first time I encounter this problem so I don't really know what to look for.
I had previous issues on other PCBs regarding top screen, ribbon cable, fuses and so on, needless to say I fixed all that stuff easily and there are a lot of tips on the Internet.
However, with these two PCBs I'm totally clueless, when I insert the charger, the red light flashes and then turns off immediately. Screens DON'T flash.
So this is what I did so far:
1) Check top screen/ribbon cable
2) Check bottom screen
3) Check F1, F2, EM10
4) Check charger port/battery contacts
Everything is okay as it should be, it looks like there is some heavy damage somewhere in the motherboard, probably due to a drop or something. The PCB looks intact though and there is no oxydation or corrosion. The other components look good and soldered in place, I didn't check them all though, I mean there are a lot of them if I only knew where to start it would be a nice thing.
So yeah basically as far as I know when the red light flashes there are some problems related to the top screen or fuses, but as already said I checked the main problems so I need to do something more deep.
Any particular thing I should look for? Are these PCBs repairable somehow or should I throw them away?
Thanks for any help!
I had previous issues on other PCBs regarding top screen, ribbon cable, fuses and so on, needless to say I fixed all that stuff easily and there are a lot of tips on the Internet.
However, with these two PCBs I'm totally clueless, when I insert the charger, the red light flashes and then turns off immediately. Screens DON'T flash.
So this is what I did so far:
1) Check top screen/ribbon cable
2) Check bottom screen
3) Check F1, F2, EM10
4) Check charger port/battery contacts
Everything is okay as it should be, it looks like there is some heavy damage somewhere in the motherboard, probably due to a drop or something. The PCB looks intact though and there is no oxydation or corrosion. The other components look good and soldered in place, I didn't check them all though, I mean there are a lot of them if I only knew where to start it would be a nice thing.
So yeah basically as far as I know when the red light flashes there are some problems related to the top screen or fuses, but as already said I checked the main problems so I need to do something more deep.
Any particular thing I should look for? Are these PCBs repairable somehow or should I throw them away?
Thanks for any help!