Just thought I would post some new findings that will help if YOU have a fried PSTwo.
Before I explain, be aware I have a PAL PSTwo! So this may be different for others.
This work around involves how you open the console and leaving the Warranty Sticker intact! Yes this is possible and EB or Walmart, Kmart, or your retailer will have to return it, the Warranty Sticker is in place!
This is what I did! I had a good look at my console before I opened, and noticed the Warranty Sticker in such a stupid place.
The warranty sticker is on the rear, and when fully opened it acts like a hinge in a way.
Take the 6 screws of from the bottom of the console. Carefully then open the console as if you are opening a door. The only screw left now is located infront of the game port. You can now proceed to remove the board and disassemble to reveal the mainboard.
What I did was leave the casing from the console open and on a flat surface, as to be out of the way also. You dont want to open and close it too much, it may put strain on the Warranty Sticker and it can then look a bit suspicious.
Wire up your mod/matrix-fix and whatever else you want to do.
Then what I did was put everything back together "except placing it in the console casing"!
I have an antistatic workbench, so this next step I wouldnt recommend however do so at your own risk.
Next, towards the back of the and behind the lazer unit you will find a micro-switch. This is for the tray open/closed detection. I place a piece of sticky tape on it whilst testing. (Only put the tape on after you have the game in. The game can fly out so be careful, I will post how I kept it in later)
Plug everything in, ie power, av and control. Turn it on. Test your console. See how it works, whether you lazer fries and the rest.
(I also did some testing while game booting, voltage peaks, also testing the Focus and Tracking coils) I dont think the casing will be going on.
The best bit is this. If you console fries, well dont panic. Remove your modchip and anything else you have done to it. Now put it back together, taking care to put the mainboard back in the casing ever so careful. Close it up, feet back on, inspect the Warranty Sticker.
If you have taken extra care, then you should be fine. Now take back into where you purchased it, (I normally take a nephew with me, they cant say no to a kid), tell them it has fried and a new console is yours!
This has worked, trust me, returned my friends console 2 days ago!
Anyway, $ony think they have beaten the modding scene? Well this time, I believe they have shot themselves in the foot!
I will post some pics later on today, so you can see step by step!
Hope this helps a little!