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Moderated by: Robert

EurAsia : Index Classic consoles... PSone problem with motherboard
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Author PSone problem with motherboard
steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36273 posted 2019-01-04 @ 23:01 GMT   
My PSone is a SCPH-102 PAL PM-41 (A), it was working yesterday with the modchip, my playstation used to turn on without showing any image nor sound on the TV, then I removed the modchip and it stopped working (it doesn't turn on).

https://i.imgur.com/bhrnxD4.jpg

https://i.imgur.com/krwXRA5.jpg

https://i.imgur.com/WTo93zN.jpg

https://i.imgur.com/P801e1Q.jpg

[ This message was edited by steveprox on 2019-01-04 @ 23:03 GMT ]

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modrobert



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Registered: 2003-10-17
From: Bangkok
Messages: 6537
Status: Online
 _#36275 posted 2019-01-06 @ 09:31 GMT   
You mentioned the modchip is removed, what are the remaining bridges and wires for?
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36276 posted 2019-01-06 @ 17:47 GMT   
See the new images below

In these images I connected the pins of some components (fuse micro) in order to turn on the playstation, if they were disconnected the console wouldn't turn on.

My PSone turns on (green light appears when I press power button), but the console doesn't show any image or sound on the TV.
I have also tried to put a CD and then turn on the playstation but nothing happens (laser is brand new, bought from ebay), please help.


https://i.imgur.com/ekBPMOy.jpg
https://i.imgur.com/ee5zUhx.jpg
https://i.imgur.com/Wk1ZDD5.jpg

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modrobert



donor

Registered: 2003-10-17
From: Bangkok
Messages: 6537
Status: Online
 _#36277 posted 2019-01-07 @ 06:04 GMT   
The soldering looks pretty bad, I suspect you have an unintended bridge somewhere. You can check for shorts using a multimeter.
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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modrobert



donor

Registered: 2003-10-17
From: Bangkok
Messages: 6537
Status: Online
 _#36278 posted 2019-01-07 @ 06:13 GMT   
Also found what looks like a smashed component, you probably need to clean that residue off and replace the component.


  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36279 posted 2019-01-07 @ 14:18 GMT   
I used a multimeter to check voltage of soldered components and short circuits they work, furthermore when I press power button the green led lights up but the console doesn't show any image or sound on TV as it did with old short circuits instead (images below)

PS600 pin must be connected somewhere in order to turn on the console (blue wire is essential)


my PSone used to work when it was in the state of the images below, it could power on and get to boot menu (memory card an CD Player) but not able to spin CDs, so I ordered a new laser and during the waiting time for shipping I cut the short circuits (in the images below) and then soldered them again (now), the pins of microfuse (like PS600, PS603, PS604 etc.) need to be connected in order to turn on the console, but PSone just powers on but it doesn't get to boot menu

https://i.imgur.com/H2LoA52.jpg
https://i.imgur.com/BKm9B76.png
https://i.imgur.com/BO9T4Jo.jpg

[ This message was edited by steveprox on 2019-01-07 @ 14:22 GMT ]

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modrobert



donor

Registered: 2003-10-17
From: Bangkok
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 _#36282 posted 2019-01-08 @ 08:13 GMT   
It looks like a voltage regulator either blown up by a short circuit or hit by mistake with screwdriver or soldering iron, if it was a destroyed decoupling capacitor it might still work, but this is serious damage. At least remove the residue within circle to avoid intermittent short, clean up the area with rubbing alcohol and cotton bud.
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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modrobert



donor

Registered: 2003-10-17
From: Bangkok
Messages: 6537
Status: Online
 _#36283 posted 2019-01-08 @ 08:26 GMT   
Also, board looks scorched, use thinner wires and less wattage on the soldering iron if possible, 10-20W range is OK (80W soldering iron is for plumbing or mains wiring).
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36284 posted 2019-01-08 @ 11:52 GMT   
PS600 is responsible to power on the playstation (or at least to light up green led), so the wire I used in the first picture might be essential
https://i.imgur.com/0XVILEa.jpg

In the following picture I cleaned with cotton bud and alchool
https://i.imgur.com/d3a0AAM.jpg

however I still get the same problem: PSone turns on (green led lights up) but there is no image or sound on TV, furthermore the board warms up and even I mounted the laser to play a CD and then turn on the console but nothing happens


my PSone used to work when it was in the status of these images
Quote:

https://i.imgur.com/H2LoA52.jpg
https://i.imgur.com/BKm9B76.png
https://i.imgur.com/BO9T4Jo.jpg



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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
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 _#36285 posted 2019-01-08 @ 15:05 GMT   
I used a copper wire, which wire shall I use?

My soldering iron is old and the tip is not so good, how can I set and check wattage on my soldering iron?

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modrobert



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Registered: 2003-10-17
From: Bangkok
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 _#36286 posted 2019-01-08 @ 16:29 GMT   


This is the same area circled, when it was working, based on your photos.

Looks like a fuse or resistor (the top black part) and a decoupling capacitor (the brown lower part). The system will probably work without the capacitor, but you need a new fuse or resistor.

Also, if this system was shorted out, and that made the components explode, then there might be more damage to the board. If it was you knocking the components off the board with screwdriver or soldering iron, then there is hope it will work by replacing that fuse or resistor, not sure what that black part is.

You can't set the wattage on most soldering irons, some have temp control, what brand is it?

If you need we have soldering iron (which is good for modchip work), thin kynar wire, and thin solder wire in the online shop.
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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modrobert



donor

Registered: 2003-10-17
From: Bangkok
Messages: 6537
Status: Online
 _#36287 posted 2019-01-08 @ 17:03 GMT   
I realize now what that wiring was, the previous modchip installer had bridged burnt out fuses on the board using thin wire, bad idea, and then you tried to redo that with big solder blobs and thick wire, even worse, which further shorted out the board. The reason you have fuses on a board is to protect the big integrated circuits from damage if something shorts out, never bridge fuses!
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36288 posted 2019-01-08 @ 17:49 GMT   
yes, you completely understood, the previous modchip installer removed fuses and bridged pins with thin wires so console was working; the first time I opened the board I cut those wires and console stopped working from that moment on, then I "connected" the pins (approchaed both of the thin wires) and console got to this situation (only turning on without showing anything on TV)

according to service manual those components are C608, C609, C635
I think they are capacitors

C608
1-164-156-11 CERAMIC CHIP 0.1uF 25V (-11/-21/-31/-41/-51/-61)
1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V (-71)

C609
1-163-021-91 CERAMIC CHIP 0.01 uF 10% 50V (-11/-21/-31/-41/-51/-61)

C635
1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V (-11/-21/-31/-41/-51/-61)

board
https://www.manualslib.com/manual/1299556/Sony-Psone-Scph-100.html?page=11#manual

description
https://www.manualslib.com/manual/1299556/Sony-Psone-Scph-100.html?page=29#manual

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
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 _#36289 posted 2019-01-08 @ 17:55 GMT   
however it was me to damage those components C608, C609, C635 with soldering iron, previous modchip installer just bridged the lower components PS603, PS606, PS601 and PS600 with FB001

if you see in my old pictures I think a pin of PS600 is connected to FB001 , can you check if I'm right? shall I connect them again if so?

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modrobert



donor

Registered: 2003-10-17
From: Bangkok
Messages: 6537
Status: Online
 _#36291 posted 2019-01-09 @ 13:01 GMT   
I think this board is destroyed due to bridged fuses, but if you want to try to repair anyway, start by replacing all fuses (not by bridging) and the other missing original components which were knocked off the board.
  _____________________________ ____________     __________________ /\________
  \    __________________      \      _____/____/     _    \       /_        /
 /     /       |       l/     _/    ____)     _/      _     \     \/  cREAM /
/______________l_______/       \______________\_______|      \_   /________/
 -+--Mo!-------------- \________/ ------------------- l_______/_____\ -----+-

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36292 posted 2019-01-09 @ 13:39 GMT   
I don't have original components nor fuses, but at least console turns on I think (green led lights up), isn't there anything else I can do?

It used to work with bridged fuses as I showed you in the images before, then I cut those bridged fuses and it stopped working from that moment on (only green led appears when I press power button), those fuses are responible for powering on playstation they must be connected

[ This message was edited by steveprox on 2019-01-09 @ 13:48 GMT ]

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steveprox



private

Registered: 2017-01-29
From: Italy
Messages: 19
Status: Offline
 _#36293 posted 2019-01-09 @ 21:23 GMT   
please further help

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