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Old 10th August 2007, 04:18 AM   #1541
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Hello Dommi
Thanks a lot for this information
I will try this batt power after my 2 weeks vacation in Italy
Greetings and enjoy
chips666
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Old 14th August 2007, 10:03 PM   #1542
bluevas is offline bluevas  Indonesia
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Hi Guys, I have Sony Playstation SCPH 103. Can I modified this model? Tthank you for your advice.
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Old 15th August 2007, 07:54 AM   #1543
baranyi is offline baranyi  United States
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I am in the United States (Chicago)and it is unfortunate that I have no technical capacity. I was wondering if there is anyone on this thread in the US who I could get to modify my playstation 1. I have now bought three of them and they are very good. Anyway, I have read about the gains made to modification to the outputs among other mods. I would like to hire someone with the knowledge shared on this thread to modify one of my first generation Playstation 1 (1001). Thank you for your consideration. Bob
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Old 15th August 2007, 12:44 PM   #1544
woolly is offline woolly  United Kingdom
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i am in the process of completely rehousing a ps1. im replacing the metal transport base (with the 3 spikes) with something made with molded heavy concrete! And re-orientate the transport. The flat cable for digital signal is very short. but i have discovered that the 7002 model (and probably other models) have the same transport but with longer cable, allowing more flexibility with mods. plus, they are newer and probably have less wear.

I will post all mods when i know it works. If anyone needs any details or positions for the 3 spikes, email me.

Im going to use the original power supply, separated, with extra capacitors on the output. With the belief this has the effect of being a pseudo battery supply.

The output from the dac seems to be 5Vdc offset + 1V ac signal, so blocking the dc is important if you want keep your speakers.
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Old 15th August 2007, 03:12 PM   #1545
Puffin is offline Puffin  United Kingdom
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Mick_F. Is a 1 Amp supply sufficient if you use separate supplies (i.e two transformers) for the 7.6 and 3.6 ?
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Old 15th August 2007, 03:18 PM   #1546
Mick_F is offline Mick_F  Germany
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You dont have much headroom left then but it should work.
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Old 16th August 2007, 10:12 AM   #1547
Puffin is offline Puffin  United Kingdom
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I am intending to use the attached power supply (s) as it will save me having to source parts and make my own.

It is said to be limited to 1Amp. Is there any way of increasing this, say by subsituting parts ?

http://www.maplin.co.uk/Module.aspx?...=3488&doy=16m8
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Old 16th August 2007, 11:49 AM   #1548
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Max output as per velleman site is 1.5A - although whether operating at this level would have any detrmimental effects I do not know, this is of course different to Mick's design and may not yield the same results - depending on where they are placed it would be good to implement the second part of Micks design to filter any noise out.

Also condsider using higher rated diodes for the bridge rectifier if you are set on going down that route

But hey im no expert!

To be honest in my latest PS (finished it on monday), I havent implemented the linear PSU yet (my last PS was dodgy/intermittent before I installed it - and now given up the ghost! (not wise storing a uncased PS in a box full of rubbish!))
Im currently using mundorf mkp rxf 3.3uf with 22k metal film resistors and I'm grinning from ear to ear everytime I hear it (the caps look really good poking out of the case too!)

Curiosity will get the better of me, and once I've found the soure of hiss in my system there will be a linear going in.

Dan
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Old 17th August 2007, 08:50 AM   #1549
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Heres a quick one of my PS with the Mundorfs installed:

Click the image to open in full size.

And one of the inside

Click the image to open in full size.

When I have sometime, I will put the IR receiver inside as per mick instructions + get the linear PSU into this one.

Dan
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Old 17th August 2007, 09:05 AM   #1550
Puffin is offline Puffin  United Kingdom
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Dan. You puy your caps and sockets where I decided was the best place for them. It means that you can swop them in and out without having to open the thing up every time.
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