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XPS 13 9370 no backlight, 1 to 10, this job is at 9

XPS 13 9370 no backlight, 1 to 10, this job is at 9 difficulty wise, proper hard one

#XPS #backlight #job

“Electronics Repair School”

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25 Comments

  1. So I am watching and following wire as "bridged" replacement to voltage. But the floating part left me confused? /was the pin connection as no contact with *track on board? And then, a deep and full realization came to me. I should not care so much as exactly how but just to understand this was two problems and repaired. One wire as to each issue, from a master of repair to components as a half lifetime of understanding.
    Thanks Soren. I get to watch from Washington state, US. More and more such faults are placed to automobile, appliance, laptop, cheap tv. Nice laptop. Cheap car module and more and more. M.

  2. salut ! dupa cum am vazut sunt cateva leduri arse si cum ledurile sunt diode ori se intrerup ori se pun in scurt in cazul asta sunt puse in scurt deoarece in momentul cand ai pornit invertorul celelelate au pornit dar cu leduri puse in scurt creste amperajul de lucru si invertorul se va incalzi si la o anumita temperatura intra in protectie de aceia reporneste cand inchizi si redeschizi panelul . problema e de la leduri arse de aceia amperajul mare la alimentarea invertorului practic trebuie schimbata banda de leduri ceea ce e foarte greu in acest caz deci ramane sa schimbi displayul

  3. Very good stuff!!! Are you at liberty to provide the source for the schematic? That is the one thing that can limit troubleshooting…without a schematic, it can be difficult!

  4. So, in the end, its a faulty inverter that began taking too much backlight power and shutting down the backlight. Faulty inverter.
    For these very thin laptop screens that are glued together, replacing the inverter is almost equal in value to replacing the whole
    lid assembly. This is definitely a short term fix. And you already checked the bottom of the screen getting hot …. which I would
    have suggested to do.

  5. Fascinating fault(s). Overcurrent and floating voltage. Recognizing what you are seeing is sometimes very simple but sometimes very difficult. Great patience in staying with it, especially as time is money. In a way it would be good to get a lot of these faults now to return the investment, but I suspect the floating voltage EC chip damage was probably caused by the previous repair attempt. Or the overcurrent fault was caused by the previous repair attempt. So you would normally only see one of those faults.

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