ps2 diagrams for faults

[sean01]

hi, i have a version 9 board that has a broken trace on it and need to get hold of a diagram so i can locate 1 of the ends of the trace so i can repair it, i have tried to locate with a multimeter but the trace runs under one of the chips and i loose it....
if any one has done such a thing please help me out.........
to give you an idea of which trace it is , it is the one thats runs from the underside of the board to the B connection on a duo 2 chip..

thank you

[l_oliveira]

You should be able to fix the mobo if you connect the renmains of the trace to the B point of the DSP chip. Check Matrix Infinity diagram for both main b point (at the DVD controller chip) and the alternate B point (the trace you blew)

Good luck !

[sean01]

thanks, ill look into it , but i have tried to solder to the remains of the trace but nothing wants to stick to it

cheers mate

[l_oliveira]

thanks, ill look into it , but i have tried to solder to the remains of the trace but nothing wants to stick to it

cheers mate

It's because the trace (which is made of copper) is covered by the motherboard protection ink (green ink)
Scratch it with a razor until the copper is exposed. Tin it with the soldering iron and the solder wire. Tin the exposed edge of the wire you plan to use as repair also. Put them together. No mistery really .....

Good luck, mate

[sean01]

ok i managed to scrape back the coating of the trace and soldered to it, ialso checked the fuses while i was there, i assembled it and powered it up and all i get is small amount of laser action and a really light squeeling sound, no video no audio...........i must mention to that the 2 resistors or whateva they are on the sx connection on the mobo have been replaced ,1 has numbers 104 and the other right next to it is just brown in colour........
maybe the 2 might have something to do with it....

[l_oliveira]

One important thing about repair on PS2s ... Aways remove the modchip before fixing.

Also, never use a chip again, if you're suspicious that it's blown. If it is blown, it's not worth risk blowing a good PS2 for just a crappy modbo. If it was a crystalchip or a MI it would be worth a shot but that's not the case if the chip is worth less than a Big Mac (lol)

I say you should remove all wires hooked to the mobo before you proceed on the repairs.(all but the fix wire, of course)

[l_oliveira]

Ah as a sidenote, the "squeeling sound" you mention if it's a high pitch whistle sound, it's the tracking coils receiving current from the mechacom (since there is a problem on it's bus it did crash)
If you let it on for long the coils will fry...

[sean01]

ok, firstly thanks for the posts,
well this board is one i received in a buch of stuff and it has no mod chip on it, although it is evident that it either had one or someone has tried putting one on...and the noise sounded as if it was in another area other than the laser....but maybe the parts/resistors they replaced were the wrong ones, can anyone verify what value the brown one should be?
and it still has no video or sound, but probly is related to these resistors

[mabcom]

the brown part near the scex is a capacitor but without it the system should still boot up (when you mix up the area with the scex you can have problems with read CDbased games or psx)

but you told that you hear a high pitch sound this could also indicate a a short on one of the bios points,

do you have a picture of you motherbord perhaps i can take a look to give you some indications where to look

grtz
MABCOM

[sean01]

i can take a picture ,but my camera is not that good on close up pics...i will look at the bios tho as there are a very dags on the connection legs....
ill see what i can do for a pic...

thanks