10 Posts
0
295
February 1st, 2023 08:00
Power fail
Inspiron 15 5510/5518
Inspiron 5510, had to change case parts, lid and kb/palmrest, when tested on battery system booted. Completed rebuild and system no longer responds to power button. Removed battery, CMOS, and RAM individually no response, cleared power capacitors etc and tried replacement SSD and alternate AC charging cable.
Stripped system, removed all peripherals and attempted power on in isolated state RAM and external monitor only.
The system now responds with a micro flash (white) when connected to AC outlet and then flashes orange when power button pressed. This happens with both original and alternate power supply. The orange light will remain if power button continues to be pressed.
At this point I am unable to diagnose a problem, the board when checked with multimeter gives some intermittent readings on a couple of components adjacent to the AC inlet and one voltage regulator appears dead - no read in test mode and continuity test is weak or non existent.
I think the board has died, but before I consign it, is there anything else I can try?
TIA
ejn63
10 Elder
10 Elder
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27.6K Posts
0
February 2nd, 2023 12:00
They're not available from Dell -- or for free, but there are sites that do sell them. Before buying, realize that even if you identify a faulty part or parts, you'll need to have access to a hot air station to even begin repairs, and that's setting aside the fact that unless you live in Southeast China, repair parts are likely to be unavailable to you.
If you still want to look for a schematic for purchase, one place to try:
http://laptop-schematics.com/
vishvajitd
2 Intern
2 Intern
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278 Posts
0
February 2nd, 2023 03:00
Based on your description, it seems that your laptop's motherboard is likely damaged. The white flash upon connecting to the AC outlet and the orange light when pressing the power button are indications of a power issue. The weak or non-existent readings from some components and the dead voltage regulator suggest that there may be some damage to the board.
Unfortunately, repairing a damaged motherboard can be complex and may require specialized skills and equipment. Before consigning the motherboard, you could try the following steps:
Check if the power outlet you're using is working properly.
Test the AC adapter with a multimeter to see if it's working correctly.
Try a different RAM module to see if the problem is with the memory.
Try a different monitor to see if the problem is with the display.
Test the voltage regulator with a multimeter. If it's damaged, it may need to be replaced.
If these steps do not resolve the issue, it is likely that the motherboard needs to be repaired or replaced. If you are not comfortable with working on electronic components, it is recommended to seek the assistance of a professional technician.
Involuto
10 Posts
0
February 2nd, 2023 11:00
Thanks Vishvajitd, I'd already tried all of those and I'm happy to work on the board and repair it if necessary. Do you know where I might get a copy of the schematics at all?