Industrial Power Electronics Repair for Business Systems

A component-level PSU repair typically costs a fraction of a new OEM replacement, especially for proprietary or high-wattage units. For example, repairing a failed capacitor or MOSFET in a printer or server PSU is far cheaper than sourcing a discontinued OEM part. We provide a quote after diagnosis so you can compare.

Most PSU repairs complete in 3-7 business days from intake to return, assuming common components are in stock. Units requiring rare or obsolete semiconductors may take longer. Rush service is available for critical business equipment.

Yes. A loose or broken DC jack is a mechanical repair. If the jack's solder pads on the board are intact, replacement is straightforward. If pads are lifted, trace reconstruction is needed. Either way, this is almost always cheaper than replacing the entire PSU.

Yes. The AC inlet (IEC connector) can be replaced if it is cracked, burnt, or loose. We also check for heat damage to the surrounding PCB area, as a failing inlet often indicates an underlying current draw problem.

For proprietary printer power bricks that are no longer available or cost hundreds from the OEM, repair is often worthwhile. Common failures include blown input fuses, failed startup capacitors, or shorted output diodes all repairable at the component level.

The simplest test is to measure the adapter's output voltage with a multimeter. If the voltage is zero or significantly below the rated output, the adapter is at fault. If the voltage reads correctly with no load but drops under load, the adapter has a regulation fault. We perform both no-load and load-bank testing to confirm.

Yes, random restarts or shutdowns under load are a classic sign of a failing power supply. Capacitor degradation, unstable regulation, or a failing output diode can cause the voltage to dip momentarily, triggering the device's reset circuit. These faults are diagnosable and repairable.

Overheating usually points to failing components (aged capacitors with high ESR, shorted turns in a transformer, or a failing switching transistor) or a dead cooling fan. We diagnose the root cause and replace the failed parts. Fan replacement is included as part of a full PSU restoration.

A ticking or clicking sound is the PSU attempting to start but immediately shutting down due to a fault often a shorted output diode, failed startup capacitor, or overloaded rail. The control IC pulses the switching transistor, detects the fault, and shuts off, creating the tick-tick-tick pattern. This is repairable once the specific fault is isolated.

Unlikely, because the protection circuit is preventing sustained operation with a fault present. However, do not continue cycling power to a clicking PSU each attempt stresses the remaining good components. Disconnect it and send it for diagnosis.

A basic multimeter test only shows DC voltage level it does not reveal ripple, noise, or transient dips. A PSU can show correct voltage on a meter but collapse under load or inject enough ripple to confuse the logic board. We test with an oscilloscope under load to catch these hidden faults.

Yes. Sending both the PSU and the device it powers gives us the best chance of isolating the root cause. We test the PSU independently first; if it checks out, we evaluate the mainboard. This prevents the frustration of fixing one only to discover the other was the problem.

Send a clear photo of the PSU board itself even without the label, we can often identify the topology and estimate the output ratings from the transformer size, output capacitor voltage ratings, and connector types. Include the host equipment model for cross-reference.

Yes. Surge-damaged PSUs often have multiple component failures blown input fuses, shorted bridge rectifiers, and destroyed switching transistors. Age-related failures typically involve capacitor degradation and are more localized. Knowing the failure context helps us scope the diagnosis and estimate parts cost.

Yes, standalone PSU intake is common. We test with load banks that simulate the host device's power draw. However, if the fault is load-dependent or intermittent, having the actual host equipment allows for a more definitive final verification.

Heavy PSUs need extra care. Wrap the unit in anti-static material, then surround it with at least 3 inches of firm padding (dense foam, not loose peanuts) on all sides. Use a double-wall box rated for the weight. Heavy items shifting during transit can crush connectors or crack the PCB.

We test at the PSU's rated maximum continuous output, and often slightly above, to verify that the regulation holds under real-world conditions. A PSU that works at 10% load may collapse at 80%. We test across the full load range.

We run burn-in tests for an extended period at rated load, monitoring output voltage, ripple, and temperature. This thermal soak reveals early-life failures that would otherwise show up days or weeks after return.

Yes. We verify isolation between primary (mains) and secondary (output) sides using hipot testing where appropriate. A failed isolation barrier can present a lethal shock hazard. Any PSU that fails isolation testing is rejected as unsafe.

A repaired PSU does not lose its original regulatory certifications as long as the repair uses equivalent or better-rated components and the original safety mechanisms (fuses, isolation, thermal protection) remain intact. We document all replaced components and their ratings in the repair report.

We inspect the fan during every PSU repair. If it is noisy, slow, seized, or has any sign of bearing wear, we replace it. A failing fan is a root cause of thermal damage addressing it prevents the repair from being a temporary fix.

We recommend against it. Opening a power supply exposes you to charged capacitors that can deliver a dangerous shock even when unplugged. Additionally, installing an incorrect fan (wrong voltage, airflow direction, or connector) can create new problems. Let us handle it safely.

Our recommendation is based on a technical assessment, not convenience. We provide specific reasons e.g., "transformer windings are shorted and no replacement is available" or "PCB is carbonized through three layers." If repair is viable, we want the work. If replacement is genuinely the better call, we say so and explain why.

We can provide the original PSU specifications (voltage, current, connector pinout) so you can source a compatible replacement. For proprietary units, we advise on the closest available alternatives and any adapter or mounting modifications needed.

Yes. Recurring failures across a fleet often point to a design weakness undersized capacitors, inadequate cooling, or a specific component running at its thermal limit. We analyze failure patterns across the batch and can provide a root-cause report, and often upgrade the weak component during repair to prevent future failures.

There is no minimum. A batch of 5 identical PSUs benefits from streamlined diagnosis and parts ordering. Batches of 20+ benefit from volume pricing. We handle everything from single units to palletized fleet intake.

We maintain relationships with component distributors and can often source equivalent or upgraded substitutes. For truly unobtainable parts, we can sometimes adapt a modern equivalent or harvest from donor units. We advise you before proceeding if a substitute may affect performance or longevity.

Yes. We can build a spare PSU inventory repair your failed units, store them, and release them as needed when a unit in the field fails. This keeps your discontinued equipment running without the scramble of finding a replacement each time.

Yes. OHMz provides a warranty on all repaired PSUs covering the specific components replaced and the soldering workmanship. Warranty terms and duration are provided with your repair documentation. If the same fault recurs within the warranty period, rework is at no charge.

Yes. With a destination list, we label and dispatch repaired PSUs to whichever sites need them. This is especially useful for multi-branch retail or restaurant chains that may have different equipment uptime priorities.

Yes. Even a PSU that cannot be safely restored may contain working transformers, heatsinks, connectors, or semiconductors that can salvage other units in your fleet. We can designate certain units as donor stock and use their parts to repair others often at a lower total cost.

You receive a serialized batch report showing each unit's intake condition, diagnosis findings, repair decision (repaired, donor, rejected), work performed, and final test results. This provides full traceability for your asset records.