Sony PlayStation 1 Laser Calibration.

Dude you deserve way more recognition, you showed how REALY calibrate!!! Thanks for saving my ps1!!!

In later PS1 models, the bias and gain tracking controls were removed, so this must be an SCPH-1001/2

The disc will actually slow down when the laser is at the outer edge of the disc and the disc will speed up when the laser is close to the centre of the disc.

Do you happen to know what the third potentiometer at this approximate area on the mainboard does? I got my unit used and I fear the previous owners could have messed with it :(

Hi mate, thanks for uploading this. Very professionally done! I had a question regarding my SCPH-7002 model ps1 - it seems to struggle to read some discs and skips and stutters on others, some disks work fine strangely enough. I cleaned the laser with IP alcohol and oiled the spindle motor with some silicone oil which seems to make it run a bit smoother but the problem persists. The ps1 is arranged differently to other models - there are only 2 potentiometers present (one on the laser arrangement ribbon and another on the motherboard I believe). I can't find any info online regarding adjusting this model of ps1, do you have any advice on this? I have access to an oscilloscope and multimeter so am able to carry out the same kind of adjustments as the ones in your video if possible

Hi I have PS 1 that has issue of laser working . It won't read and work until I put small piece of tissue or anything like under the tray to push it more then it can play games. Or it works when I push more the outer of tray disc ! Any idea why it works in that way !

Can someone explain to me what the RV703 potentiometer on a newer model ps1 does? Is it similar to the bias and gain pots of the older ps1?

What are your freq and voltage settings on your scope? Also, what is the point that you look for the eye pattern on? It was not visible in your video.

I installed a chinese replacement laser for my SCPH-1001 and it was just not good for some games using CD-Audio such as Strider 2, not even after following the calibration indicated by the service manual. Perhaps the PSOne lasers follow different calibration adjustements ?

i have bought 2 new cd assembly for my ps1 but the same problem still happens the disc spins for a moment, then stops. on every cd assembly what could be the problem? Power supply maybe?

thank you for the video! My SCPH 5501 ( PU 18)sudenly stops playing some background music. This occurs mainly on CGs and FMV. The video image runs ok, but has no sound. In some games the background music plays perfectly, but in others only plays sound effect( voices, shots, explosions)...no sound... For example: Tforce V plays only the sound effects.,,, no sound on presentation CG, no sound on game, only the sound effects. The same issue in Vagrabt Story. But in Crash 1 , 2 and Crash team Racing, has no problem, these entire games plays normally. Do you think its possible to be a optic laser issue? All these CD-r games plays normally on my PS2.And all this games was working flawless three months ago in my ps 5501. Do you have any clue or tip? i just have a multimeter, i try to solve this issue moving the potentiometer, but none of this solve the problem. Thank you.

How to fix without oscilloscope?

Useful information nice one thankyou. My model however only has a single pot which is the one on the drive for power. I've been playing with it for about a week now but without an oscilliscope. I've been measuring the mV on the point above that pot starting at 10.0 mV and slowly working my way up so that I can play backups of my games. I believe it may be better to work with resistance instead here, I'm not sure what with being the self taught noobie that I am with electronics. Anyway, regardless of adjustment and with a new drive no matter what I do I cannot get it to read them 100% reliably so much so that I've started to advise that it's best to avoid cd-r backups altogether. I performed the adjustments using a cd-r packed with music. I've gotten it extremely close but no dice.

For later models that don't have these pots I bet it's cheaper to add them back with jumper leads so it can be adjusted well running then it is to replace the laser assembly?

hello sir.. i was just wonder how long will the laser last? and now my ps1 works really well after i adjusted my potentiometer. im just worried that my lens will burn out. im no tech savy and i dont know how to revert it again to the way it was. i just wanna know how long will my playstation last until my lens burns out? like days, months, years? thanks in advance for answering.

Does this apply for SPCH 9002 as well? There is nothing like that on the mobo.

Hi and I noticed there's a white plastic Phillips head screw potentiometer on the power supply, what is it and what does it do?

This is how all instructional videos should be made. Im looking at getting an oscilloscope for this type of stuff and general electronic repair. How do you rate the model you have there?

Hi micheal I have another question if you or anyone else can help. I want to be able to refurbish these consoles to as close to new as possible, as far as working and reliability. They cost nothing to buy and everyone says "just buy another" when they break, but of course then youre just adding another unreliable box to the pile. My question is do you know where I can buy replacement GOOD QUALITY lasers or parts? Or alternatively, does the calibration method in this video bring the lasers back to "like new" quality? Is going out of calibration generally what happens when they go bad? Assuming that mechanically it was all good. And one last thing, are there any other components you know of that commonly fail on these, so that i can preemptively replace them? Leaky caps etc? Sorry for all the questions its just rare finding someone who actually knows what theyre talking about, thanks again

Good video, but... You can use a lead soldered on CL704 :). Also, your RF is good but maybe too low (0.6v p-p?) Cheers :)