Sold PowerUP Pro - C64 PSU replacement/upgrade board

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TL;DR: Rebuild your original C64 PSU (power supply unit) with modern and reliable technology instead of buying a "saver" or new PSU.

The stock C64 PSU is infamous for damaging/destroying your computer when the PSU fails. The PSU consists of mainly two parts; 1) the iron core transformer which outputs 9V AC 2) the linear regulator board which transforms 9V AC to 5V DC

The second part is the weak link and can cause a too high output voltage. The original construction is ineffective, unreliable and produces quite a lot of heat (nice for warming you feet though). Keep the good part and replace the bad one!

This board is a modern replacement/upgrade with switched and filtered voltage regulation. The need for a so called "saver" is minimized/eliminated and you can keep on using your original Commodore PSU.

The board fits the beige wedge shaped PSU variant (third picture); Part No. 902503-06, Part No. 902503-11 and eventually more. Works with 110/230V and 50/60 Hz transformers.

  • Output voltage: 5.05-5.25V +/- 0.05V (5.15V default*)
  • Output current: 3A MAX**
  • Efficiency: ~90% (original board: <50%)
  • Size: 70x50x25mm (WxDxH)
  • Built with high quality parts from Texas Instruments, Nichicon, Rubycon and others
  • 1x 220 ohm resistor included for power LED option
  • 2x Holographic decals included (30mm diameter)

*The voltage is slightly higher than 5.0V to compensate for the voltage drop across the power cable and other components. Commodore used the same technique for the stock board.

~~~~~

The installation requires: 1) Opening the PSU (more or less force is needed as parts are glued together) 2) Removing the original PCB and installing the the new PCB (soldering)

ALWAYS measure and verify correct output voltage and polarity BEFORE connecting the upgraded PSU to your C64.

The boards are hand-built and tested

Availability: not available on Amibay anymore

Price: €24 for one board. €23/each for 2+ boards
Shipping: worldwide untracked - €5. Worldwide tracked - €12

PowerUP Pro Manual with install instructions
 
Last edited:
Declaring interest.
Im interested in 3 boards or any at all when available :)
(Marked as sold/completed by anemo)
 
Last edited by a moderator:
Eekay said:
Declaring interest.
Im interested in 3 boards or any at all when available :)
Click to expand...
Interest noted! I'm waiting for a reply from user Bierli but will nonetheless make more boards so I will get back to you.

EDIT: PM sent as I have not received any response from Bierli yet but I will make more boards in near future.

EDIT: Three boards sold to Eekay

EDIT 230304: Package shipped
 
Last edited:
Declaring interest.
I'm interested in one board when available.
(Marked as sold/completed by anemo)
 
Last edited by a moderator:
Declaring interest.
Interested in buying 2pcs if still in stock!

update: replied and money sent!
(Marked as sold/completed by anemo)
 
Last edited by a moderator:
Declaring interest for 2 unit. Shipping to France.
(Marked as sold/completed by anemo)
 
Last edited by a moderator:
Declaring interest.

I'm about to receive a C64C with a PSU. I need to check what PSU it is and then i will gladly upgrade with this one if compatible. Will PM within 24h.
(Interest withdrawn here)
 
Last edited:
Interest withdrawn. (was previously declared here)

Sorry i have to withdrawn. I have received a C64C yesterday but i have no way to check if it works because i don't have an AV cable. Will come again alter if i need the PSU upgrade.
 
Xanxi said:
Interest withdrawn. (was previously declared here)

Sorry i have to withdrawn. I have received a C64C yesterday but i have no way to check if it works because i don't have an AV cable. Will come again alter if i need the PSU upgrade.
Click to expand...
No worries! Just get back to me if/when you need a board.
 
Declaring interest.
anemo said:
View attachment 2454376View attachment 2454377View attachment 2454384View attachment 2454379View attachment 2454378

TL;DR: Rebuild your original C64 PSU (power supply unit) with modern and reliable technology instead of buying a "saver" or new PSU.

The stock C64 PSU is infamous for damaging/destroying your computer when the PSU fails. The PSU consists of mainly two parts; 1) the iron core transformer which outputs 9V AC 2) the linear regulator board which transforms 9V AC to 5V DC

The second part is the weak link and can cause a too high output voltage. The original construction is ineffective, unreliable and produces quite a lot of heat (nice for warming you feet though). Keep the good part and replace the bad one!

This board is a modern replacement/upgrade with switched and filtered voltage regulation. The need for a so called "saver" is minimized/eliminated and you can keep on using your original Commodore PSU.

The board fits the beige wedge shaped PSU variant (third picture); Part No. 902503-06, Part No. 902503-11 and eventually more. Works with 110/230V and 50/60 Hz transformers.

  • Output voltage: 5.05-5.25V +/- 0.05V (5.15V default*)
  • Output current: 3A MAX**
  • Efficiency: ~90% (original board: <50%)
  • Size: 70x50x25mm (WxDxH)
  • Built with high quality parts from Texas Instruments, Nichicon, Rubycon and others
  • 1x 220 ohm resistor included for power LED option
  • 2x Holographic decals included (30mm diameter)

*The voltage is slightly higher than 5.0V to compensate for the voltage drop across the power cable and other components. Commodore used the same technique for the stock board.

~~~~~

The installation requires: 1) Opening the PSU (more or less force is needed as parts are glued together) 2) Removing the original PCB and installing the the new PCB (soldering)

ALWAYS measure and verify correct output voltage and polarity BEFORE connecting the upgraded PSU to your C64.

The boards are hand-built and tested

Availability: 5 board(s). The boards are also sold elsewhere

Price: €24 for one board. €23/each for 2+ boards
Shipping: worldwide untracked - €4. Worldwide tracked - €12

PowerUP Pro Manual with install instructions
Click to expand...
Hello, please can I register my interest in one of these :) thanks.
(Interest marked as expired by anemo)
 
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Interest Queue

  1. Eekay
  2. Mccoy30
  3. MindWalker
  4. bernouilli92
  5. Xanxi
  6. Antpant7
  7. softinn
  8. Bierli

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