Playstation as CD-player - Page 166

audio1st · 17th October 2007, 05:28 PM

OK, I have just found your earlier pictures and your output is direct from chip, so what are the wires in the picture?
I think the problem is going to be something to do with an earthloop problem. Did you use the Playstation with a different Amp?

Dan_Steele · 17th October 2007, 06:01 PM

Hi Audio and Anthony,

The extra wires are there because im using RCA's on the top of the case along with Mundorfs and the 22k's are located there to.

I simply connected both the screen and core to the gnd on the old RCA's and ran this up to the rca's ontop of the case (figured the extra wire was there so might as well use it.

I guess it is a bit confusing to look at it that way without that piece of info.

So basically cut the signal tracks on the old RCA's and used their gnd connection along with the signal coming straight from the chip (i hope that makes sense)

It worked just great so Im confident that part was right.

I might try taking the PSU to one of the labs at uni this week and use their DVM's to check the voltages (the led light still blinks when recieveing IR signal so at least one side is good) - not to sure how the guys there will react though, seeing as its not passed any safety tests etc.

Set up here at uni (active x-over pre amp with 4 X gainclone mono's) was exactly the same as it has been all along.

I'll keep you all posted.

Regards

Dan

jives11 · 18th October 2007, 09:03 AM

Bad luck Dan,

I wonder if the bottom side of the board was shorted on the lower metal plate ? The motherboard is effectively in a metal case, with a thin sheet of metal screening beneath it and the metal fram on which the transport sits above it. Was there any scorching on the lower metal surface beneath the motherboard. I wondered if there was a point of contact between the two causing some arcing ?

Dan_Steele · 18th October 2007, 11:01 AM

Hi jives,

There was scorching on the plate (but no obvious pitting from arcing), but at the same time this could just be the residue that was created from the burining pcb.

Had a chat with the lab technicians today and they said they would pat test the psu for me, so theres a start.

I could understand if it was thrown around, but it was wrapped and put in a box and cant imagine it recieved any shocks at all, guess it might just be bad luck!

Regards

Dan

ecir38 · 24th October 2007, 01:54 PM

Quote:

Originally posted by Mick_F
Just in order to report some new developments from my side: I am now completely circumventing all output circuitry without any replacement. I lead the signal from the DAC directly to new RCAs, which are located on a small metal plate at the position of the parallel port (which I removed). I will show some pics soon on my site. The output has some DC but this is eliminated by a capacitor before the next stage.

I am doing this because I have, in a recent test, noticed that the sound quality strongly depends on the quality of the output capacitors (a well known thing, indeed). However, the capacitors I considered by far the best (among those I tested) are Intertechnik Audyn-cap plus. These capacitors are enormous and will by no way fit into the case of the PS1. Also, this gives me more versatility concerning the choice of components after the PS1 (in particular, to avoid leading the signal through more capacitors than absolutely necessary).

Mick

Mick, have you done this yet? Don't know if I missed it being I am still working through the whole thread.

Mick_F · 24th October 2007, 01:57 PM

Not yet (too lazy, because my system sounds very good already in its current state) but a friend did. Any particular questions?

ecir38 · 24th October 2007, 02:49 PM

None in particular. I just think this sounds like the best way to go about this and was hoping to see some pics.

I am new to the CDP scene and am thinking the PS1 will be a fun place to start. Without having and seeing a 1001 yet I do have one question. Why are the existing rca's so difficult to remove? Seems like you could just break it up and desolder one connection at a time then install a new panel across the back. I am thinking I will try this if it is possible if I pick one up.

audio1st · 26th October 2007, 01:50 PM

This is my latest and best sounding playstation. Trouble is it's not allowed in the living room for some reason.

I just have to sneak it in late at night

(no shes not that bad really)

Mick_F · 26th October 2007, 01:55 PM

I cannot understand why the WAF is so low. I find it beautiful.
Did you use electrolytics on the output?

audio1st · 26th October 2007, 02:25 PM

Hi Mick (thanks), they are 4.7uf Obbligato Premium Film Oil Caps (the big black items).

24th October 2007, 01:57 PM	#1656
Mick_F diyAudio Member Join Date: Jun 2005 Location: Cologne	Not yet (too lazy, because my system sounds very good already in its current state) but a friend did. Any particular questions? __________________ No statement here.

26th October 2007, 01:55 PM	#1659
Mick_F diyAudio Member Join Date: Jun 2005 Location: Cologne	I cannot understand why the WAF is so low. I find it beautiful. Did you use electrolytics on the output? __________________ No statement here.

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17th October 2007, 05:28 PM	#1651
audio1st diyAudio Member Join Date: May 2005 Location: Foxton, CAMBS..	OK, I have just found your earlier pictures and your output is direct from chip, so what are the wires in the picture? I think the problem is going to be something to do with an earthloop problem. Did you use the Playstation with a different Amp?

17th October 2007, 06:01 PM	#1652
Dan_Steele diyAudio Member Join Date: Jul 2006	Hi Audio and Anthony, The extra wires are there because im using RCA's on the top of the case along with Mundorfs and the 22k's are located there to. I simply connected both the screen and core to the gnd on the old RCA's and ran this up to the rca's ontop of the case (figured the extra wire was there so might as well use it. I guess it is a bit confusing to look at it that way without that piece of info. So basically cut the signal tracks on the old RCA's and used their gnd connection along with the signal coming straight from the chip (i hope that makes sense) It worked just great so Im confident that part was right. I might try taking the PSU to one of the labs at uni this week and use their DVM's to check the voltages (the led light still blinks when recieveing IR signal so at least one side is good) - not to sure how the guys there will react though, seeing as its not passed any safety tests etc. Set up here at uni (active x-over pre amp with 4 X gainclone mono's) was exactly the same as it has been all along. I'll keep you all posted. Regards Dan

18th October 2007, 09:03 AM	#1653
jives11 diyAudio Member Join Date: Mar 2004 Location: Hampshire	Bad luck Dan, I wonder if the bottom side of the board was shorted on the lower metal plate ? The motherboard is effectively in a metal case, with a thin sheet of metal screening beneath it and the metal fram on which the transport sits above it. Was there any scorching on the lower metal surface beneath the motherboard. I wondered if there was a point of contact between the two causing some arcing ?

18th October 2007, 11:01 AM	#1654
Dan_Steele diyAudio Member Join Date: Jul 2006	Hi jives, There was scorching on the plate (but no obvious pitting from arcing), but at the same time this could just be the residue that was created from the burining pcb. Had a chat with the lab technicians today and they said they would pat test the psu for me, so theres a start. I could understand if it was thrown around, but it was wrapped and put in a box and cant imagine it recieved any shocks at all, guess it might just be bad luck! Regards Dan

24th October 2007, 02:49 PM	#1657
ecir38 diyAudio Member Join Date: Jul 2007 Location: New Orleans	None in particular. I just think this sounds like the best way to go about this and was hoping to see some pics. I am new to the CDP scene and am thinking the PS1 will be a fun place to start. Without having and seeing a 1001 yet I do have one question. Why are the existing rca's so difficult to remove? Seems like you could just break it up and desolder one connection at a time then install a new panel across the back. I am thinking I will try this if it is possible if I pick one up.

26th October 2007, 02:25 PM	#1660
audio1st diyAudio Member Join Date: May 2005 Location: Foxton, CAMBS..	Hi Mick (thanks), they are 4.7uf Obbligato Premium Film Oil Caps (the big black items).