DOTRONIXIT Solutions
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Home / Services / Computer Repair / PSU Replacement

Random shutdowns or won't power on? Check the PSU first.

A failing power supply is the most commonly overlooked cause of a “dead” desktop.

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28+ Years Experience
Standard Component Warranty (*T&C Applies)
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Open Sun–Fri
Google Reviews

What Our Customers Say — Straight From Google

★★★★★

no power no display..good services and cheap price sevices

Google Review · Kepong Branch
★★★★★

My laptop model is Asus GA401I, was unable to switched on. Found Dotronix from google review actually, lot of people were satisfied with the service so I immediately reached out to ask about my laptop. Customer service is really good, Mr Ash keep me updated frequently. Highly recommend this place if anyone looking to repair their laptop. The price is very affordable too since my laptop have issue with motherboard (cheap compared to other repair shops that I visited). Plus point, they provided delivery service since I couldnt come to pick up. Thank you so much Mr Ash :)

Google Review · Kepong Branch
★★★★★

Hp probook 440 g Problem : laptop cant be on, problem with power source. Sent to hp service centre, they give quotation for rm3800, which is huge amount. Then found dotronix by google search. And they were really helpful and helped to solved the problem within few days and for a fraction of the cost from the hp center. Additionally gave 3 months warranty for the repair as well. Not to mention they give me a free service for cooling system and free thermal paste

Google Review · Kepong Branch
★★★★★

Laptop HP Processor Rosak, Dotronix tukar motherboard sekali dalam harga separuh. Memang terbaik

Google Review · Kepong Branch

What's going on

A failing PSU rarely announces itself clearly. It can cause the machine to not turn on at all, shut down randomly under load, or make other components behave erratically as voltage delivery becomes unstable — symptoms that get mistaken for a motherboard or CPU fault more often than they should. We test PSU output under load before replacing any other, more expensive component.

Common signs to look out for

  • Computer won't turn on despite other components appearing fine
  • Random shutdowns under load, especially during gaming
  • A burning smell or clicking sound from the PSU
  • Unexpected restarts during normal use
  • PC turns on then immediately powers off

What usually causes it

  • Capacitor degradation with age
  • Power surges without adequate surge protection
  • A PSU underpowered for the components installed
  • Dust buildup causing internal overheating and shutdown

How we diagnose this

01

PSU output test under load

We test actual voltage delivery under load, not just whether the unit powers on.

02

Visual capacitor inspection

We check for bulging or leaking capacitors, a clear sign of PSU failure.

03

Swap test

A known-good PSU is swapped in to confirm the fault before ordering a replacement.

04

Wattage & compatibility check

If replacing, we confirm the new unit is correctly rated for your current components.

Common questions

Desktop PSU replacement FAQs

A failing PSU can cause symptoms that look exactly like a motherboard fault — random shutdowns, instability under load, or refusing to power on. We test PSU output under load specifically, since it's a cheaper and more common cause than a board fault.
Diagnosis and replacement starts from RM 199, depending on the wattage and specification your system needs. We confirm the exact price after testing your current unit.
Usually same-day to 2 days, depending on part availability for the wattage and connector type your system requires.
Simpler faults in this category (a loose connection, a straightforward part swap) are often same-day. The Same day–2 days window covers cases where the fault escalates to chip-level board work, which needs micro-soldering diagnostics rather than a quick parts swap. We tell you which category yours falls into right after diagnosis, not at pickup.
No. This is a hardware-level fix that doesn't touch your storage or files — your desktop boots back into exactly the same software state it was in before, data untouched.
Every repair carries our Standard Component Warranty, terms and conditions applying to labour and the fix itself. If a replacement part carries its own separate manufacturer or supplier warranty — batteries and SSDs typically do — that can extend further depending on the specific part, and we tell you exactly what applies to your repair before any work begins.
No. Basic live-agent assessment is always free at Dotronix, whether you approve the repair afterward or not. You only pay if you say yes to the quote we send you.
Both work, shaped to each hub. Book ahead with Our Live Agent for a guided workshop visit in Kepong, or visit our Kuchai Lama branch — call/WhatsApp first to confirm availability. Either way you get the same diagnosis and pricing.
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Free Assessment By Live Agent (*T&C Applies)

Book a guided workshop visit at Kepong, arrange onsite service, or send us a photo — a free Live Agent assessment either way.*

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