Member Avatar for danrw

Hello Everyone
Glad I found what looks like to be a nice forum with knowledgable people.

I have a big problem that has been haunting me for a while now.
About 8 months ago, my younger sister was using my laptop, a Compaq Persario X1000, she called me and said "the battery died, where is the charger". When plugged in, nothing happened so she left it. When I got there I saw that no lights were on, it was plugged in, I didnt know what was up. I started searching. I found a site, x1000forums, but it is now shut down, dont know why

Yesterday I tried fixing it again.
I have tried, Hard reseting it, new battery, 4 differnt power chords, all of which WORK on other compaq laptops, so it isnt those,
I completley took it apart yesterday and examined it TOP to bottom. I couldnt find anything wrong. I removed the heatsink and applied new thermal paste, everything else looked fine
Nothing has happened to the power connection, and a fully charged battery doesnt work either
What can I possibly do next?
Thanks so much, in advance.

Dan

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  • 11 Replies
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  • 3 Years Discussion Span
  • Latest Post Latest Post by crunchie

Dani AI

Generated

Several good suggestions already appear in the replies (for example and ). Before assuming a full system-board replacement, a short, prioritized diagnostic workflow will often narrow the fault to a single, replaceable component.

  • Non‑invasive checks (no soldering): confirm the AC adapter’s DC output with a multimeter (set to DC volts) and compare to the adapter label; verify polarity. Test the barrel under slight load or while gently wiggling to see if the jack or tip has an intermittent break. With battery and AC removed, hold the power button ~30 seconds to discharge residual charge, then plug AC (battery out) and watch any LED behaviour.

  • Visual and basic board checks: inspect the area around the power inlet and the nearest components for burn marks, bulging capacitors, or cracked solder joints. Follow the positive trace from the jack to the first SMD component — the input fuse is commonly marked with an “F” and is often open when the board is otherwise repairable. With power sources removed, use a multimeter continuity/ohms check between the jack positive and the fuse pad; an open reading at the fuse isolates the fault.

  • More advanced electrical hints: a near‑zero resistance from input positive to ground suggests a shorted regulator or MOSFET; a blown input fuse that immediately blows again indicates a downstream short. If a simple fuse or daughterboard is open, component‑level repair is much cheaper than full board replacement.

Safety and next steps: avoid powering the board if a short is suspected. ESD precautions and battery handling are important. If there is no multimeter or solder experience, ask a board‑level repair shop specifically to check the DC inlet, input fuse, and the first power regulators before replacing the entire mainboard.

Recommended Answers

All 11 Replies

Member Avatar for danrw

Anyone have any ideas what is wrong here?

Member Avatar for obsolence

Anyone have any ideas what is wrong here?

Hi,
I have a similar problem. My Dell Laptop actually fell from the coffee table and on to the carpet. And after that it won't power-up. I have tried 4 different adopters: when I plug the adopter in the laptop, the adopter light does off. The battery is also full and I have also tried it by removing the battery.

I have no experience of opening and checking the laptop. I am hoping someone can help explain me enough that I can then go to a repair place and have them do it.

thanks in advanve...

Member Avatar for glennsta

Similiar thing happened to me. Compaq laptop fell about 18" to carpet. Acted funny for a week then went DEAD. NOTHING. Hope we both get some help.

glennsta

Member Avatar for shielser

i think it needs a new mother board because it might be fried. im crap at spelling. have you a surge pertecter ?

Member Avatar for rlynn411

No lights - no power - most likely system board.

Member Avatar for Laptop-Guy

Might just need the DC Jack (power socket) replaced on the motherboard. If force is applied to the AC Adapter (charger) it can weaken the solder joint.

<SNIP> has a how to repair a DC Jack, the process is the same for most laptops.

I fix them for £59.99.

Edited by crunchie because: Removed URL. Keep it onsite thank you.
Member Avatar for chrishea

Any good reason that you would respond to a posting that is a year old (or is it just a business promotion thing)?

Member Avatar for g18

greetings to all you problemed humans as a xp3506 computer, you should know that once the motherboard overheats with 125+volts, the inside of the jack breaks right at the tip causing a shortage in the metalic rod, which cuts the energy flow. Solution: solder with antimony-lead coil, if not convinced go to a repair store!!!ASAP

Member Avatar for crunchie

Might just need the DC Jack (power socket) replaced on the motherboard. If force is applied to the AC Adapter (charger) it can weaken the solder joint.

<SNIP> has a how to repair a DC Jack, the process is the same for most laptops.

I fix them for £59.99.

Apart from this thread being almost 3 years old, what makes you think the OP lives in your country?

Member Avatar for karlenepatag

got the same problem. please help!

Member Avatar for crunchie

Nope. Thread is 4 years old. Please start your own thread and explain the problems you are having.

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