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Commodore C128 PSU


Out of stock

The C128 PSU is a modern replacement power supply unit for Commodore C128 computers. Provides stable and filtered 5VDC output up to 4.0A by industrial grade AC/DC power module. It offers full 9VAC output provided by classic heavy duty linear transformer unit. The best, full featured, replacement C128 PSU on the market. The one and only absolute industry standard, followed by many copiers and clones you should beware! Protect your precious C128 system from the killing voltage comes out of 35 years old original Commodore “brick of death” PSU!

AUD$ 92.99

Out of stock

Commodore C128 PSU by Electroware: to protect your Commodore 128 system from the killing voltages coming out of the 35 years old Commodore “brick of death” PSU!

C64 PSU Genuine Logo


The old Commodore C64 PSU is the most common C64 failure cause ever. We know it and thanks to our continuous educating mission, most of C64 users are aware of this fact already. That’s good! The C128 model was equipped with better PSU by default, but it can also fail after 35 years… here is the modern replacement with specific and rare rectangular DIN 5-pin plug.

Our C128 PSU is modern, replacement power supply unit for Commodore C128. Provides stable filtered 5VDC (up to 4.0A) by industrial grade AC/DC power supply and full 9VAC (1.1A) by classic heavy-duty linear transformer unit. It is all integrated into small enclosure and dimensions 2x smaller than the original Commodore 128 PSU. Durable, professionally molded enclosure assures good air ventilation, mechanical protection and electrical isolation.

New C128 PSU Commodore 128 PSU Commodore 128 system running new C128 PSU


For many years we are listening to your feedback and offering the unique, new replacement PSU for Commodore computers. Thanks to continuous contact with Commodore users community worldwide our PSU is getting better with every feedback we receive. It’s 10th revision offered now, always designed with retro computing love and by an active C64, C128 and Amiga Users.

We are proud to say that our original PSU design becomes an industry standard, accepted and valued worldwide. What a pity it has been copied and crippled by many other sellers hungry for “easy” profit. Offering PSU packed in fancy enclosures & stuffed with tons of ridiculous marketing slogans like “designed from scratch”. Please beware of these copies as we can’t take responsibility for their quality, safety features and overall performance.


  • Commodore C128 compatible
  • Stabilized & filtered 5VDC up to 4.0A output (20W)
  • 9VAC up to 1.1A (10VA) output by real heavy-duty trafo (new model, now voltage matches the original!)
  • Carefully calibrated for C128 reference load
  • Multiple active & passive over current and over voltage protections
  • Fully isolated, fused on AC and DC side
  • Power On/Off switch
  • Status LED (green for 5VDC)
  • Long output cables (1.8m) with rectangular DIN 5-pin plug
  • Detachable input AC cable for UK and EU (cable included)
  • Fixed input AC cable for USA and AU versions
  • Weight only 0.6 KG (2x less than original PSU)
  • Runs COLD!

New C64 PSU powering the UK made C64 bread bin


Stay with the original Electroware products to gain top build quality, unique features unavailable with the clone products:

  • ON/OFF switch (save the environment by turning the PSU off totally and save your C64’s main switch as it broke very often)
  • Detachable AC input cable for EU and UK (we deliver 1.5m cable but you can use much longer cables if necessary). Fixed 1.8m cable for USA and AU versions.
  • Status LED (green)
  • 100% repairable, easy to disassemble by qualified technician, spare parts available.
  • All electric cables terminated with the industrial grade, detachable wire-to-board connectors. There’s no amateur and dangerous direct wire-to-board soldering!
C128 PSU status LED indicator C128 PSU power switch and detachable AC input cable
Inside of C128 PSU New C128 PSU compared to the original Commodore 128 PSU


Protection & Adjustment hardware feature is offering the basic 5VDC voltage fine tuning feature in safe limited range of 4.9-5.3 VDC (readings for C64C connected as a reference load). Now you can set the exact 5VDC for your system as due to the ageing and variety of modern peripherals available nowadays, the current draw and voltage drop on the cable (and on/off switch) is different for each particular C64 system. As the current PSU is universal and 4A capable it’s possible to power the C128 computer with use of C64-tio-C128 cable adapter. At lease the basic voltage adjustment is the great option when switching from C64 to C128 and opposite as C128 draws much more current and causes larger voltage drop on the cable, connectors and computer’s power switch.

But if you are looking for more advanced adjustable solution (better range and precision, best quality components, low ripple) please refer to our C64 PRO PSU model.

Purchasing the adjustable version? Great! You may be interested in Voltmeter making the calibration easier. Check it out: C64/C128/VIC-II Voltmeter

New C64 PSU powering the UK made C64 bread bin New C64 PSU compared to the original Commodore PSU


Every single Electroware C128 PSU unit is triple tested before dispatch. To assure flawless quality and long lasting performance we are testing with original Commodore gear from our collection as well as by burn-in test with customized load simulating devices causing 150% overload (comparing to regular C128 system).

Stay with the original Electroware products to gain top build quality, unique features unavailable with the clone products.

By purchasing this product you are supporting the C= community worldwide and contributing to our continuous developing process. Thank you!

C64 PSU testing station.


Risk of electrical shock and energy hazard when opened. All failures should be examined by a qualified technicians only. Risk of fire or electrical shock. The ventilation holes should be protected from foreign objects or dripping liquids. Please do not install power supplies in places with high ambient temperature or close to the heat source. Enclosed power supplies are intent to work in indoor locations, it’s not allowed to use power supplies outdoor, in dust or high moisture. Output current and output wattage must not exceed the rated values.

This replacement C128 PSU has been designed for Commodore 128 vintage computer systems only and should be considered as an integral component of C128 computer system. Do not connect to any other devices as it’s not a general purpose PSU. Manufacturer is not responsible for any consequences of unauthorised or arbitrary repairs, modifications or incorrect usage. Please notice that new, properly working replacement C64 PSU is reducing the system’s potential fail rate but still is not guaranteeing that entire C128 system will work correctly (it’s >35 years old).

C64 PSU genuine logo.

SKU: RK0047 Categories: , , Brand:
Weight 1.1 kg
Dimensions 21 × 11 × 12 cm

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