PS1 5v fan installation?

I was agreeing that TriMesh's idea was bound to work, and pointing out what Kev was talking about in the post TriMesh quoted when he said "It should have worked".

I was trying to add some clarity, but it looks like I just made it more confusing. I do that sometimes!

 

well, as for the heat issues of the ps1's, as far as i remember this was only an issue with the older (1000/1001/1002) models that had the laser assembly on the same side of the case as the PSU.
on later models it was moved to the right side, and the PSU compartment of the case was separated a little better which pretty much made the problem go away.

 

The problem didn't go away. It just wasn't as common.

The most common fault people will get with all the older ps1 models will be a laser fault. This is still due to heat. Every faulty PS1 of mine and my friends have all been down to the laser.
It's very rare to see a PS1 die from other issues.

 

it's true that i've already had to recalibrate my 1002 multiple times now, granted the machine is 18 years old.
the laser completely failed on me yesterday. Oh well, i suppose it served it's pricetag.

 

yes it did, the laser rails were metal in later versions and couldnt warp. Issues with lasers dont need to be related to heat.

 

I had the first PAL version of the PS1 and i can confirm this yes, we had to use it upside down.....shocked it last for so long tbh. Played it that way for a good 8 or so years lol, then it just started making a loud buzzing noise and kept on resetting itself whenever i turned it on

 

I didn't see it in the thread but you shouldn't he install a flyback diode where he connected your fan?

Since the PSX powers ON and OFF from a mechanical switch, it is even more likely that the excess current built in the coil of the fan will rush back to the PSU at power OFF. This could burn off the PSU (and maybe the motherboard too) prematurely.

Anyway what's the cost of a simple diode just to be safe?

 

What could cause the problem then. Pretty much all faulty PS1 systems I have come across needed turning sideways to read the disc, or a replacement of the laser to completely fix the it. That's where the problem still lies, even with the metal rails. It might not be heat causing it in the later models, but they still ended up acting in the same way as the original SCPH-1002 would.
The laser assembly was still sub-par in one way or another all the way up until the PSOne.

 

power to the coils probably?

 

You could, but it's kind of pointless -the only sort of motor that generates back EMF spikes are the ones that have a field winding, and they are much bigger than the sort of fans you use in a console. Most of those little fans use brushless motors (which don't produce anything at all when you turn them off) and the rest are permanent magnet types (which produce a slowly decaying voltage with the same polarity as the one that was applied).

 

What are the laser model numbers with the metal rails? I have a 1001 and I want to replace the laser with one that has metal rails. I think the rail is warped from heat. What is the laser model number for a PSone? That is probably the best option.

 

KSM-440BAM is the PSone pickup assembly. That will fit directly into a SCPH-100x machine with no modification except for changing over the top cover. If you are going to do this you are much better off finding a second-hand PSone and removing the optical pickup from that than getting it from some place like ebay, since all the ebay pickups I've seen have been low quality copies. They generally work OK in an actual PSone, because it has a much better servo than the old machines, but give read problems in a SCPH-100x.

Over the years, Sony have used quite a few different types of pickup in the PS:

KSM-440AAM - Used in SCPH-1000 and some very early SCPH-1001 and 1002. Has a plastic sled and serious wear problems.
KSM-440ACM - Used in SCPH-3000, SCPH-5000, and later SCPH-1001 and 1002. There are two variants of this; the first uses a
plastic sled like the AAM and has the same problems, the later one uses a die-cast sled and nylon inserts, and generally work
OK.
KSM-440ADM - Used in SCPH-55xx and SCPH-700x (I.E. PU-18 and PU-20 machines) plastic frame has longer tabs on it and the
ribbon cable is longer - can be fitted to early machines if you either cut off the extra bits on the frame or swap the optical
pickup block, but the cable tends to get in the way. All have metal frames.
KSM-440AEM - Used in SCPH-750x and SCPH-900x (I.E. PU-22 and PU-23 machines) pretty much the same as the ADM,
except for a shorter ribbon cable - fits more tidily into an old machine than the ADM unit.
KSM-440BAM - Used in PSone, Same format as the AAM and ACM and directly interchangeable except for the cover.

 

I fit the assembly from a SCPH-101 into my 1001 and it works great. Though it was necessary to trim and sand the case a bit to get it to fit but that was before I knew I could just swap the guts of the lasers around.

 

I believe Braders1989 have either SCPH 1000 or SCPH 1001

The real question is If the fan manage to work from PS1 console, how you gonna manage to fit the dreamcast fan inside the PS1? The fan is fairly big for PS1. I guess gonna require alot of work!

 

lol I did this exact mod 3 weeks ago except I used the black bezel for the orignal unit and I also added a dreamcast fan( had to sand dow were it clips to make it thinner). Btw the dreamcast fan works well on the 8v line and if you glue it to the top half of the case right beside the back of the psu you don't need to cut anything.

 

I'd like to see some photos of the fan mounted to the ps1 case or whatever you guys did. I had the same idea when I started reading about the heat problems with 1001 and putting a Dreamcast fan in a ps1 case. Interesting that some of us had the same idea. So post some pictures of this working nightmare that you have and I will see if it matches mine or has some sort of close resemblance. Mine was just a nightmare and not a working nightmare.

 

Here are some pics that are grainier than a potato ( buying a good camera is on my to do list).

 

I want to do this mod now! Thanks for the inspiration.
Would you please post a tutorial for the SCPH-7501 model? I have a Stealth Elite mod chip in it. Do you think this will cause any issues?

 

The modchip shouldn't cause any issues. I don't own a scph7501 ,but I need to pick one up since the 1001 doesn't like mod chips and I want the ability to use the parallel port. Anyway enough of me rambling on, here's a pic with the psu connector pinouts for all models that I totally didn't steal( I did, I lied)
So just grab the 8 volt and the gnd then hot glue the top portion of the fan to the same area I did and you should be good.


Edit: I also want to add that I wired my fan for ventilation like how it was used in the dreamcast.

 

Could you show the ventilation holes for the fan takeshi385? Like to see what you did for the holes on the side of the psx case.