Have got this new Mercury System that i bought as defective in hope of repairing it, seller told there might be a defective 200SBI - He was right 
About the issue.
I got it home and powered it on, and the brick didn't send any signal. Not even 2D image was passed through. Monitor just entered power saving after a while. Tried to replace the AA module with a spare one i had lying around and didn't.
After that i decided to test the 200SBI cards one by one, and 3 out of 4 of them was defective with lot of small artifacts on the textures, the color inside the small artifacts changed pretty much for each frame. Pretty sure it's bad VRAM. But shouldn't the brick then at least show a picture with lots of
artifacts, instead of nothing at all, beside not pass any 2D. When i tested the 200SBI cards individually, did all the cards bypass the 2D image just fine.
Maybe the brick not showing any image can be related to the Power Supply, which a earlier owner have replaced. Would maybe guess that the PSU isn't providing enough power, but i have measured the voltage and ther's 5.05v on the 5v rail, but can't of course see if ther's any ripple, have to get my own Oscilloscope now that i moved out from my parents house.
Was gonna replace the FSP Group PSU it with a PC Power & Cooling unit that had 40 amp's on the 5v. but it couldn't work with the motherboard somehow. Fist i thought that it was the board, but then i tried with a identical 440GX+ board but same issue, so it maybe just don't like ATX2+ units.
How to repair?
First of all, until i get a new PSU (a PC Power & Cooling - Turbo Cool 450, with 50amp's of justice on the 5v - Also the original PSU) will i just forget about the testing the brick, wich is somehow pointless to speculate about right now, and instead see if i can repair the 200SBI cards. But I'm having a few trouble with finding the right 40pin Edo SOJ's for them.
On the original EDO's thers written this:
Silicon MAGIC 125MHz
AA9931 SM81C256K16CJ-8
[Blockierte Grafik: http://i.imgur.com/jowic7r.jpg]
So have to find some 512kb 256x16 SOJ's on 5 volt and as close to 125mhz/8ns as possible.
Will have to buy a real rework station, not only my silly heatgun that only was ment for removing paint and stuff.
Solution 1 - "Lucky and lazy"
Find some SOJ's as close to 8ns as possible and replace all of them, then will i have to buy another defective 200SBI board and replace them on that one aswell as i have 4 matched cards. "Luckly" this is a VERY common issue, and know quote a lot of people with defective boards. In fact the guy i bought my spare AA module and riser cards from, had all 4 of his 200SBI boards defective.
Solution 2 - "Frankenstein"
Use original working SOJ's from one of the defective boards, and replace the defective ones on the two other defective boards. This will require a LOT of extra work, and big chance to course even more damage to the boards, since i'll have to replace them in smaller bundles.
The smartest way will be to buy a extra defective 200SBI board, and then unmount ALL the SOJ's from ALL the 4 defective boards, and then buy a SOJ tester (Or maybe mount some 40pin sockets on a Voodoo2 board, that would be nice) and then test all the SOJ's and mount the working ones on the 3 of the boards.
Then will i end up with one "unusable board" unless i replace it with some slower SOJ's.
Only problem here is how many days (or more like hours) the cards will last after the repair, since these SOJ's have a short lifespan. But it's a cheap solution.
Final words.
If solution 1 is possible, then will i like that one the most to have a future proof setup that i can use without being worried about limited lifespan. And on the same time have a LOT of spare EDO's that can be tested and used for projects and future repairs on other boards. Within 10 years may the rest of the 200SBI boards also die, and it would be nice to find and buy as many replacement SOJ's while they are around.
But on the other side, will it also be nice to have a 100% original system, that will coast me a additional defective 200SBI board, that i later can use for testing after market SOJ's.
Would also be nice if you can recommend a good rework station with some industry known nozzle standard thingy, so i can replace them later on when might get more into the fight with BGA, dont really need a heat-bed, but it will of course not hurt if one was included. And NO, using a toaster isn't really a good idea. 
Budget max 400euro for the rework station, see a fev cheap ones on ebay, but dont want one ther's too cheap. Else it will be pointless for me to buy a new one.
Any input will be highly appriciated! Fell free to come with some alternative solutions, or good sites for finding SMD's
Pictures:
[Blockierte Grafik: http://i.imgur.com/T7Kze5h.jpg]
[Blockierte Grafik: http://i.imgur.com/jWRCbrf.jpg]
[Blockierte Grafik: http://i.imgur.com/SHHsurT.jpg]
[Blockierte Grafik: http://i.imgur.com/1jqiCiY.jpg]
Video:
