PS1 No Video output? Fixing...

[Cyrem]

Now first off I know I could go out an buy another one. But I'm not buy'ing PS1's for myself I buy faulty ones because I want to fix them up, clean them and resell... I enjoy cleaning up a PS that has had a hard life.

Now, I'm stuck with this one. Now I'll be honest, I don't know much about the PS Motherboards or how to fix problems with them. But I would like to learn more about them. I was just going to throw this one in the bin... but then I thought of this place.

Mother B Pic:
http://www.cyrem.net/uploads/IMGP0641.jpg

Now it starts up, disc spins however there is nothing visual. No sony logo... nothing. I'm lead to believe that everything works but it's just not putting out the video. I have no idea where to start to try and fix the problem.

I've blown it off with some compressed air, and the only problem I can see is that the chip on the top right just under the MB Number, you can see two connections that look a little unhealthy.

On a side note the Power supply is ruined, where the power plugged in into the PS the board is burnt and was lose. However when I got it it still powered on... until I broke the plug off.

Oh and it's from a 9002.
Thanks!

[bobzee]

Those pins do look a bit suspect. If you're handy with a soldering iron, clean them up & resolder them

Problems with IC102 can cause a blank screen.

[jinn]

hook up the power supply and mobo, connect to power and video
press down on the cxd8561c0 chip and turn on
If you get video or sound, you will need to re-heat the pins

You might want to connect the 2 points wit some wire on the chip under the mobo version

[Cyrem]

Hey thanks, I'll give it a good and see what happens

EDIT: Well unfortunately either my soldering skills suck or I need a finer soldering iron because after an hour I couldn't connect it to such a small point.

Thanks for the info though, now I know a little more. :)

[bobzee]

If it's one of those cheap soldering irons then yes, it makes it difficult to do any work on small contacts. You can get a reasonably priced one that has different tips for different jobs.

The two I use:
http://i272.photobucket.com/albums/jj191/bobzee666/forums/Antex.jpg
Antex CS18 (18W) - for desoldering and heavy duty soldering.
Antex M12 (12W) - for surface mount stuff.

Both good irons with a selection different of tips.

Also, it's good to get some soldering practice on old scrap PCBs.