PS3 Frankenstein APS-231 MODERNIZED PSU Rebuild | Cooler? + Load Tested

PS3 Frankenstein APS-231 Modernized Power Supply Rebuild

The PS3 Frankenstein conversion doesn't have to stop at the RSX!

Following the successful development of our Modernized APS-226, we're taking Sony's APS-231 through the same comprehensive component-level modernization process.

Our goal is to renew the major aging power-handling components, improve long-term reliability, and determine whether modern semiconductor technology can further improve the already efficient APS-231 design.

This isn't another used PSU with fresh thermal paste. We're rebuilding the actual electronics while preserving Sony's original circuit architecture.

Complete Component-Level Modernization

The APS-231 modernization renews the major power-handling sections of the original supply, including:

• Three new premium 450V high-voltage capacitors
• New low-voltage output capacitors
• Modernized PFC switching MOSFETs
• Modernized primary switching MOSFETs
• Modernized synchronous rectifier MOSFETs
• Modern SiC PFC boost diode
• Updated bridge rectifier
• Renewed heatsink thermal interfaces
• Electrical isolation inspection
• Component-level troubleshooting and testing

We intentionally do not publish our complete component-level substitution list or detailed modernization BOM.

From the Bad Bin to a Working PSU

One particularly interesting aspect of this project is that our first development APS-231 was previously considered unreliable.

This power supply came directly from our failed-parts inventory because it had a history of shutting down after approximately 30 minutes of operation.

After completing the modernization and resolving an initial solder bridge during startup troubleshooting, the rebuilt APS-231 successfully powered an original 90nm backwards-compatible PlayStation 3.

The supply passed its previous approximate failure window while operating under real gaming load.

This is an encouraging initial reliability result, although further endurance testing is necessary before drawing conclusions about long-term service life.

Oscilloscope Testing — Stock vs. Modernized

Power supply reliability isn't just about temperature. Clean, stable DC power delivery is equally important.

We used our oscilloscope to examine the main 12V DC output of the modernized APS-231 and compared the waveform directly against a stock APS-231.

Both supplies displayed very similar ripple and switching-noise patterns under our initial test conditions.

We observed no obvious increase in output noise attributable to the modernization.

These were preliminary comparative measurements, not formal ripple certification. Additional validation remains part of our development and quality-control process.

Real-World Thermal Testing — The Results

This is where the modernization became particularly interesting!

We installed the rebuilt APS-231 into an original 90nm PS3 with no CELL or RSX undervolting.

During gaming, this console consumed approximately 220–230W from the wall.

We compared the results against our previous stock APS-231 test in an optimized 40nm Frankenstein with significant undervolting, consuming approximately 140W from the wall.

Both tests used identical PSU temperature probe placement and normal active chassis cooling with the console lid installed.

Test	Stock APS-231	Modernized APS-231
Console	Optimized 40nm Franky	Original 90nm PS3
CELL / RSX Undervolt	Yes	No
Wall Power	~140W	220–230W
Peak PSU Temperature	39.8°C	38.3°C
Probe Location	Same	Same
Cooling	Active / Lid On	Active / Lid On

The modernized APS-231 recorded a 1.5°C lower peak PSU temperature while operating in a console consuming approximately 80–90W more wall power.

During the test, we also observed the PSU temperature responding to the PS3's automatic fan adjustments.

When chassis fan speed increased, PSU temperature dropped from approximately 38.3°C to 37.5°C.

This is a promising real-world result, especially considering the significant difference in processor configuration and overall console power demand.

The tests were performed on different consoles, and ambient temperature and fan RPM were not fully controlled. These measurements therefore demonstrate observed thermal performance rather than a guaranteed cooling improvement or quantified efficiency gain.

Reliability Is the Main Goal

Although the temperature results are encouraging, cooling is not the primary reason we developed this service.

Original PS3 power supplies are approaching two decades old. Even functioning units contain high-voltage capacitors, switching devices, rectifiers and thermal interfaces that have experienced years of operating time and heat cycling.

Our modernization focuses on replacing major aging and high-stress components with carefully selected modern alternatives.

The objective is to restore dependable electrical operation, renew the thermal interfaces, and verify the rebuilt PSU under actual console workloads.

A modernized APS-231 is intended to offer customers a thoroughly serviced alternative to installing another untouched used power supply of similar age.

APS-231 vs. APS-226 — Choosing the Right PSU

Both modernized supplies serve different purposes within our Frankenstein restoration program.

Modernized APS-231 — Optimized, Reduced-Power Builds

Our preferred low-temperature option for properly undervolted Frankenstein configurations using reduced-power RSX hardware.

Because the APS-231 has lower output capacity, we recommend it only after the finished console's power demand has been reduced and verified.

Modernized APS-226 — Higher-Headroom Builds

For higher-draw configurations, ZSSR replacements and systems requiring substantially greater power headroom, our already-released APS-226 modernization remains the preferred solution.

The correct power supply is selected according to the electrical requirements of the finished console.

APS-231 Modernization Service

Our APS-231 modernization service offers two options:

Complete Modernized APS-231 — $175

We supply a completely rebuilt and tested APS-231. No core exchange is required.

Rebuild Your Existing APS-231 — $110

Send us your existing APS-231 for the same component-level modernization and reconditioning process.

Both options are designed primarily for properly optimized, reduced-power Frankenstein builds.

For current service availability, pricing and repair information:

iKon Technical Solutions — PS3 Frankenstein Services

Watch the APS-231 Development Livestream

This project was developed and tested on our actual repair bench.

The livestream includes component-level development, startup troubleshooting, real PS3 operation, oscilloscope comparisons and thermal testing.

Watch the APS-231 Rebuild & Load Test on YouTube

PS3 Frankenstein Hardware Restoration

Our restoration work includes factory bare-die 40nm RSX conversions, NEC/TOKIN power-rail rebuilding, CELL/RSX voltage optimization, BGA rework, cooling upgrades, PSU modernization and component-level electronics repair.

PS3Frankenstein.com

iKon Technical Solutions — Aurora, Colorado

PS3 Frankenstein Repair | BGA Rework | Component-Level Electronics Repair | Power Supply Modernization