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Old 20th February 2006, 05:58 AM   #651
jives11 is offline jives11  Europe
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Default Re: Why do they sound so good?

Quote:
Originally posted by Greg Stewart
No drawer, not a lot of buttons, not much case (and what's there is less resonant than the metalwork of many standard-cased CDPs and DVDPs). This is given more weight in my mind by how much better it sounds with the case top off. It also reminds me of the improvements I got in my old rebuilt Maggie CDB-650 when I pulled out the drawer mechanism and just used the CD drive... well worth it!
It's quite easy to remove the remaining 'ringing' of the metalwork wih some damping panels. Make sure you don't block any cooling holes

http://www.diyaudio.com/forums/showt...267#post800267

When you remove this and tap it with a screw driver it has a definite ring to it, but even just one small car damping patch applied under where the transport sits reduced this to a 'donk' sound (Hope thats not a rude word in any language )

I also got some sorbothane feet from ebay so the whole thing 'bounces'. If you read Mick_F's postings he sits his on a massive block of wood floating on a partially inflated small tyre inner tube.

I think your assertions are probably right, though perhaps the transport is more robust too. It has to cope with the requirements of male teenage gamers. Also I think the PSone was sonys first games console and perhaps , like CD players, is overengineered compared to later models ? It's certainly well made and was probably sold at a loss, consoles are I believe .
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Old 20th February 2006, 12:24 PM   #652
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Default Re: DAC Offset Voltage... Oh, and SMPS mods too!

Quote:
Originally posted by Greg Stewart
I'm also looking at doing some minor mods to the SMPS... just to hear what it'll do. Basic stuff... BG all the electrolytics, replace the AC input filter cap (the X2 one) with a Dynamicap or an Auricap, and replace the diode bridge with soft-recovery ones or the new Cree Schottky diodes (got some here, but they are only 1a versions... would not work, I bet).

Thoughts on that too?

Greg in Minneapolis
This is a SMPS. Thus the measures won“t work as suspected. For example have a look at the low voltage diodes
Whatkindofdoyathink they are ?

Best,
Thomas
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Old 20th February 2006, 12:35 PM   #653
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Default Re: Sonic diffs between different runs of 1001's

Quote:
Originally posted by Greg Stewart
... BTW, my unit's serial numbers are:

U7058439 - older one I've just played this evening
U7354023 - older one still a virgin
U8449907 - newer one I've played about a week

One nice thing is they all have the metal-guide laser unit... I saw two other 1001's tonight with the plastic-guide laser and decided not to buy them. Good idea?

...
Sorry, I can“t confirm your serial numbers. You have to look for the part numbers, which are like

1-658-467-11 PU-8
1-658-467-21 PU-8
1-658-467-22 PU-8
1-658-467-23 PU-8

for the SCPH-1001/1002. Compare to Frank Stoelben“s website:
http://www.playfidelity.com/


Avoid plastic-guided lasers. OTOH the replacement of the laser-unit would be quite easy.


Quote:
Originally posted by Greg Stewart
...

Finally, I picked up a PS-One last week before I was clear on what models were good (1001... 101... sounded like the same unit!). It looks to have the metal-laser too... should I keep it for parts or take it back?

...
Give it a try - the well-known dynastation 1 and 2 is equipped w/ the SCPH-102 for example.

Best,
Thomas
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Old 22nd February 2006, 04:38 PM   #654
poynton is offline poynton  United Kingdom
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Hi.

Help wanted.
It may already be covered but bear with me.

I have just acquired a scph-1002.
It does not play but everything else seems to work.
Being a newbie to playstations, can i replace the mechanism from a later model??

Thanks and sorry if its been asked before.

Andy
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Old 22nd February 2006, 05:13 PM   #655
jives11 is offline jives11  Europe
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Quote:
Originally posted by poynton
Hi.

Help wanted.
It may already be covered but bear with me.

I have just acquired a scph-1002.
It does not play but everything else seems to work.
Being a newbie to playstations, can i replace the mechanism from a later model??

Thanks and sorry if its been asked before.

Andy
Hi Andy,

Glad to see you amongst the ranks of the greystations. How far does it get. While I don't use it now, it was useful when testing my unit to plug it into the TV to check I was navigating to the right button on the screen. I'm guessing your pretty sure it does not want to play a CD, but navigating the controls 'blind' is a bit tricky, I ended up getting a £5.00 remote off ebay.
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Old 22nd February 2006, 05:57 PM   #656
poynton is offline poynton  United Kingdom
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Quote:
Originally posted by jives11


Hi Andy,

Glad to see you amongst the ranks of the greystations. How far does it get. While I don't use it now, it was useful when testing my unit to plug it into the TV to check I was navigating to the right button on the screen. I'm guessing your pretty sure it does not want to play a CD, but navigating the controls 'blind' is a bit tricky, I ended up getting a £5.00 remote off ebay.

Yep. I have the controls etc and it won't play games or cds so I assume it is the mech. I have a couple of later versions. (stolen from the kids!)

Andy
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Old 22nd February 2006, 10:17 PM   #657
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Default Sony PS1 schematics needed

Moin,


has anybody some schematics from the Sony PS1, Model 1002/1001 or 5502/5501?

Tried them as a player, but couldn“t find the hype.

I want to use them as a transport, without spdif ... so where the hell does the receiver pins went to the seriell or parallel port, and is this signal oversampled or not?

The DAC-datasheet is nice, but I“m a little bit lazzy following those small traces on the Sony-PCB...a complete schematic is much nicer to work with, you know?

Thanks,

Carsten
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Old 22nd February 2006, 11:54 PM   #658
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The transport mechanism from a later model will work. the first 1001 I bought had a weak laser, I used the transport from a 9001 to fix it. They aren't made exactly the same way though- you will have to do a bit of work to make it fit.
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Old 23rd February 2006, 04:30 PM   #659
bungy is offline bungy  United Kingdom
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Default Research Paid Off

Hi all,

New to posting here, but i have been reading this post avidly for the last few weeks.

After some lengthy research across the internet world i finally decided to commence my own construction.

I folllowed the instructions from:


which are very good.
I used a SCPH-100*. fitted the extra circuitry featured on the site and used new gold phonos from maplins.

I replaced the original laser with one from a PSone and adjusted to avoid skipping. though not to the values on the site.! The power supply is from a SCPH-550*. Though to fit this i had to 'bodge' the 7 pin cable into a 5 pin cable. Seems fine, just conencted the ground to another and didnt connect the reset (as the button is unused).

Then decided to fit the whole thing into an MDF box, using the original lid mechanism. Cut some air holes for the power supply and sprayed the lid black with car bumper paint. Fixed some cherry wood to the sides to match my speakers (MS 902's decleration) and varnished it.

I also have incorperated the PS2 remote which works fine. Hopefully going to invest in an SONY RM-AX4000 touch screen remote, which should replace this (if it works).

I used half squash balls for the four feet which have been superglued on.

Only part unfinished to date are the buttons, i am looking for some 40mm black rubber grommets to cover the buttons below in the rough cut aluminium polished sheet.

The quality of the player is very good and is a lot lot lot better than my cheapo dvd player. I can hear a difference but think it is on par with my friends £500 marantz universal player. I am extremely pleased with it and in total probably cost me the best part of fifty quid. (i did have to buy 5 psx's, components, soldering tips and timber though!!).

Basic pictures below, more can be posted on request and extra details if anyone is interested as this is just a brief overview!!.

Thanks for listening, i highly recommend this as a cheap fun conversion with exciting rewards.

Tim.
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File Type: jpg psxcd1.jpg (99.3 KB, 1125 views)
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Old 23rd February 2006, 04:30 PM   #660
bungy is offline bungy  United Kingdom
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without lid
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