C64 Power Supply group buy - Page 5

john1979 · 08 September 2014, 21:31

Quote:

Originally Posted by hansel75

And if a c64c psu fails, is there any risk to the c64 itself like there is with the old ones?

The epoxy C64C PSUs are no better than the old ones. When they fail they overvolt and usually kill the delicate RAM chips.

To power my 64, I'm using a U.S. Robotics 9V AC 1A modem adapter and an Ex-Pro 5v DC 2.5A adapter ( http://www.amazon.co.uk/Ex-Pro-Regul.../dp/B004ECHT0O ). Chopped the the cable of the original PSU half way and connector blocked it to the wires from the adapters. Been working fantastic every since, and no more fear of frying my C64 with old PSUs.

dlfrsilver · 08 September 2014, 21:59

John, can you post a picture of your custom PSU showing how you did ?

john1979 · 08 September 2014, 22:32

It looks a bit Frankenstein. I guess for better aesthetics you could join the wires more securely in a box somehow. I just used a connector block and electrician's tape. The important thing is that you're not using the time bomb that is the original C64 PSU.

Join the two lines from the AC-AC adapter to the 9V wires on the chopped plug (since it's AC I guess polarity doesn't matter) and join the AC-DC wires to the DC wires (observing polarity this time). Then test you've got the output to the correct pins with a multimeter.

C64 PSUs have colour coded wires that don't vary greatly between models. Blacks are for AC, brown for +5V and blue for ground. You can always test the wires from the original PSU with a multimeter if you are unsure.

Image:
http://zaphod.hacked.jp:60000/eab/c64psu.jpg

dlfrsilver · 09 September 2014, 00:04

Thank you very much john for this picture

do i understand that the whole thing is not grounded ?

hansel75 · 09 September 2014, 07:14

Well even though the c64c's psu aren't that great either, it's probably better i use it for now instead of the old black wedged one i guess.

But if Kipper does produce some new c64 psu's, i would definitely buy a new one of him after reading more info about the state of old psu's.

john1979 · 09 September 2014, 10:14

Quote:

Originally Posted by dlfrsilver

Thank you very much john for this picture

do i understand that the whole thing is not grounded ?

I think that has something to do with AC adapters being double insulated so they don't require a ground pin. The original C64 PSU didn't have a dedicated ground wire either AFAIK. On appliances with a conductive casing the ground wire is connected so that in case of a short any electricity runs back through ground instead of the person that touches the case.

This is slightly out of the range of my knowledge though

dlfrsilver · 09 September 2014, 10:38

ok thanks anyway

Retrofan · 04 November 2014, 12:46

Quote:

Originally Posted by kipper2k

I have 2 samples that are being sent to me so i will be able to have more info once i receive them. From what i have read, the problem with the original power supplies was the voltage regulators shorting out and dumping full current into the C64s. I think the newer components of today are better designed

I've been reading about PSU's with newer components, like BasicWayne's one.

http://www.lemon64.com/forum/viewtopic.php?t=33023

And somebody has sent me some tests he made:

http://hostthenpost.org/uploads/6a92...561adbd553.jpg
http://hostthenpost.org/uploads/1277...9f4cf961ef.jpg
http://hostthenpost.org/uploads/7e35...1ac83b3594.jpg
http://hostthenpost.org/uploads/72d1...ab5161c9a9.jpg

john1979 · 04 November 2014, 20:04

A lemon64 principal is never buy C64 stuff from Basic Wayne.

http://www.lemon64.com/forum/viewtop...fa5f8d13199d79

Retrofan · 05 November 2014, 02:07

Quote:

Originally Posted by john1979

A lemon64 principal is never buy C64 stuff from Basic Wayne.

http://www.lemon64.com/forum/viewtop...fa5f8d13199d79

But his stuff was considered as very cheap (39€). How can we get a PSU for 19€ while Ray Carlsen the master sells them for a hundred? Well, his PSU's can power on more devices at the same time, but I wonder what can we get for just 19. Wasn't Jens going to ask for 60 or around?

fgh · 20 February 2015, 11:28

Any news on this?

BarryB · 22 February 2015, 01:05

Yes, both Kipper and Jens have mentioned C64 PSU projects but nothing for sale yet

john1979 · 24 July 2015, 23:01

Is this project now dead?

Retrofan · 24 July 2015, 23:10

There is another thing: http://wiki.icomp.de/wiki/12V_DC_power_supply

Not for sale yet.

gunni · 25 July 2015, 20:34

Quote:

Originally Posted by Retrofan

There is another thing: http://wiki.icomp.de/wiki/12V_DC_power_supply

Not for sale yet.

that's a power supply for the reloaded board not original C64s.
http://wiki.icomp.de/wiki/C64_reloaded#Power_supply

Retrofan · 25 July 2015, 21:34

So it won't work? Are you meaning that the C64 reloaded can't use an original C64 PSU?

john1979 · 25 July 2015, 22:22

Quote:

Originally Posted by Retrofan

So it won't work? Are you meaning that the C64 reloaded can't use an original C64 PSU?

Yes c64r needs a different psu. Original 64 needs 5vdc and 9vac.

Retroplay · 25 July 2015, 22:34

Make your own, it's quite easy.
[ Show youtube player ]

Amiga1992 · 26 July 2015, 00:44

Quote:

Originally Posted by Retrofan

There is another thing: http://wiki.icomp.de/wiki/12V_DC_power_supply

Not for sale yet.

That is not for normal C64s. C64 reloaded uses its own DC only PSU like the new Amiga motherboards will too. It only makes sense.

That's why the page is clearly stated as DC power supply. Obviously that cannot work with a C64 which needs both AC and DC power.

Retrofan · 26 July 2015, 01:20

But they said they were going to make it, just as for the A1200. That's what I believe.

Also I don't want to use two different PSUs like in the video of Retroplay, but that's a nice info.

09 September 2014, 00:04	#84
dlfrsilver CaptainM68K-SPS France Join Date: Dec 2004 Location: Melun nearby Paris/France Age: 46 Posts: 10,438	Thank you very much john for this picture do i understand that the whole thing is not grounded ? Last edited by dlfrsilver; 09 September 2014 at 00:11.

26 July 2015, 01:20	#100
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,190	But they said they were going to make it, just as for the A1200. That's what I believe. Also I don't want to use two different PSUs like in the video of Retroplay, but that's a nice info. Last edited by Retrofan; 26 July 2015 at 01:32.

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08 September 2014, 21:59	#82
dlfrsilver CaptainM68K-SPS France Join Date: Dec 2004 Location: Melun nearby Paris/France Age: 46 Posts: 10,438	John, can you post a picture of your custom PSU showing how you did ?

08 September 2014, 22:32	#83
john1979 Registered User Join Date: Jun 2012 Location: UK Age: 44 Posts: 748	It looks a bit Frankenstein. I guess for better aesthetics you could join the wires more securely in a box somehow. I just used a connector block and electrician's tape. The important thing is that you're not using the time bomb that is the original C64 PSU. Join the two lines from the AC-AC adapter to the 9V wires on the chopped plug (since it's AC I guess polarity doesn't matter) and join the AC-DC wires to the DC wires (observing polarity this time). Then test you've got the output to the correct pins with a multimeter. C64 PSUs have colour coded wires that don't vary greatly between models. Blacks are for AC, brown for +5V and blue for ground. You can always test the wires from the original PSU with a multimeter if you are unsure. Image: http://zaphod.hacked.jp:60000/eab/c64psu.jpg

09 September 2014, 07:14	#85
hansel75 Walk Off? Boolander! Join Date: Aug 2012 Location: Gladstone Australia Age: 48 Posts: 628	Well even though the c64c's psu aren't that great either, it's probably better i use it for now instead of the old black wedged one i guess. But if Kipper does produce some new c64 psu's, i would definitely buy a new one of him after reading more info about the state of old psu's.

09 September 2014, 10:38	#87
dlfrsilver CaptainM68K-SPS France Join Date: Dec 2004 Location: Melun nearby Paris/France Age: 46 Posts: 10,438	ok thanks anyway

04 November 2014, 20:04	#89
john1979 Registered User Join Date: Jun 2012 Location: UK Age: 44 Posts: 748	A lemon64 principal is never buy C64 stuff from Basic Wayne. http://www.lemon64.com/forum/viewtop...fa5f8d13199d79

20 February 2015, 11:28	#91
fgh Registered User Join Date: Dec 2010 Location: Norway Posts: 820	Any news on this?

22 February 2015, 01:05	#92
BarryB Amigaholic Join Date: Dec 2009 Location: UK Posts: 4,708	Yes, both Kipper and Jens have mentioned C64 PSU projects but nothing for sale yet

24 July 2015, 23:01	#93
john1979 Registered User Join Date: Jun 2012 Location: UK Age: 44 Posts: 748	Is this project now dead?

24 July 2015, 23:10	#94
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,190	There is another thing: http://wiki.icomp.de/wiki/12V_DC_power_supply Not for sale yet.

25 July 2015, 21:34	#96
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,190	So it won't work? Are you meaning that the C64 reloaded can't use an original C64 PSU?

25 July 2015, 22:34	#98
Retroplay Lemon Curry ? Join Date: Sep 2004 Location: Denmark Age: 49 Posts: 4,088	Make your own, it's quite easy. [ Show youtube player ]

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