A video circulating on Reddit shows a VSP MEGAMAX VS750D, a budget 750W power supply, catching fire and throwing sparks moments after being plugged in for the first time, with no load connected. The clip was posted to r/pcmasterrace and later picked up by Russian outlet GameGPU, which reported the unit sells for roughly $40. The story has since taken an unexpected turn: Aris Mpitziopoulos of Cybenetics, the independent lab behind the SAFE and ETA/LAMBDA certification programs, has weighed in directly and confirmed his team has already tested this exact model, that it passed certification, and that the video alone isn’t enough to say what actually went wrong. Its suggested this is an RMA unit from a customer due to the lack of packaging.
What the Footage Reportedly Shows
According to the Reddit post and GameGPU’s article on this incident, a staff member at what appears to be a Vietnamese PC service center unboxed the PSU and connected it to mains power on its own, without a motherboard, GPU, or any other component drawing current. Within moments of power-on, the unit produced a loud arc, visible flame, and a burst of sparks, filling the work area with smoke. The technician reportedly withdrew his hands in time and unplugged the unit before it caused further damage or injury. The photo the technician shared afterward, reproduced above, shows the extent of the damage: the rear label listing the unit’s rated output is scorched and partially melted through, with visible charring around the AC input section of the casing.
Cybenetics Responds: This Unit Passed SAFE Testing, Including a No-Load Check
The detail that changes the shape of this story came after the clip started circulating: Aris Mpitziopoulos, the engineer behind Cybenetics’ PSU testing program, confirmed that his lab has already evaluated this exact model. Per that evaluation, the VSP MEGAMAX VS750D (listed under Cybenetics as the VSP MEGA MAX 750W, OEM’d by Jiumeng) was tested on December 20, 2025 and passed SAFE certification, which specifically includes over-temperature protection, short-circuit protection, inrush current protection, and a no-load operation test, the exact scenario shown in the video. It also earned ETA and LAMBDA certification for efficiency and noise at 230V.
Mpitziopoulos said this is not necessarily evidence of a bad PSU and that something else appears to be behind the failure, though he cautioned that a short clip isn’t enough material for a proper technical analysis. He also pointed out that the technician in the video appears to be barefoot at the time of the incident, and used the moment to stress the general importance of having working protection circuitry, and taking basic precautions, when testing power hardware in a repair environment. We have not been able to independently verify the barefoot detail or reach Mpitziopoulos ourselves; this is relayed from his public comments on the incident.
About the VSP MEGAMAX VS750D
The VSP MEGAMAX VS750D is a budget ATX power supply sold in Vietnam, rated for 750W continuous with an 850W stated maximum, built around active PFC and an integrated DC-to-DC design. It is manufactured by Shenzhen Jimeng Electronic Technology Co., Ltd. in Guangdong, China (listed by Cybenetics under the OEM name Jiumeng), and sold by Vietnamese retailer techpd.vn at 890,000₫, in the same ballpark as the roughly $40 figure GameGPU cited. Its retail listing advertises OCP, OPP, OVP, and SCP protection via a GR8329 supervisor IC, claims that broadly line up with what Cybenetics measured independently.
VSP MEGAMAX VS750D: Retail Listing vs. Cybenetics Test Data
| Spec | Detail |
|---|---|
| Model | VSP MEGAMAX VS750D (Cybenetics-listed as VSP MEGA MAX 750W) |
| OEM | Jiumeng |
| Rated power | 750W (850W stated maximum) |
| Form factor | ATX, 165 x 150 x 86mm |
| AC input | 180-240V, 5A, 50-60Hz |
| Cybenetics certifications | SAFE, ETA-EMI (230V), LAMBDA (230V) |
| Cybenetics test date / Lab ID | December 20, 2025 / VS75003076 |
| Measured efficiency (230V) | 87.861% average across 1,450+ load points |
| Measured noise (230V) | 30.47 dBA average |
| SAFE checks passed | Over-temperature, short-circuit, inrush current, no-load operation |
| Listed retail protections | OCP, OPP, OVP, SCP (via GR8329 IC) |
| Not covered by SAFE | Surge protection, fan failure protection |
| Manufacturer | Shenzhen Jimeng Electronic Technology Co., Ltd. (Guangdong, China) |
| Warranty | 3 years (per retailer listing) |
| Price | 890,000₫ / roughly $40 USD |
Why This Is Still Worth Watching, Even With a Passing Grade
A no-load, first-plug-in failure is normally close to a worst-case scenario for a PSU, since it means a unit failed under the lightest possible electrical stress rather than while struggling under a heavy gaming rig, which is exactly the blind spot Cybenetics built its SAFE certification for budget power supplies to catch. The fact that this specific model already passed a no-load test under lab conditions, and that the person who runs that lab is telling us not to jump to conclusions from one clip, is a useful reminder of how certification actually works: a pass means a sample of the design met a defined bar on a given test date, not that every unit that ever ships is immune to a bad capacitor, a manufacturing defect, or a fluke in that specific board. It’s also a reminder that a repair environment carries its own risks separate from the hardware, which is part of what Mpitziopoulos was getting at with his comment about basic precautions.
