V1 and SCEx? voltage check?

[magikempire]

I have a V1 PS2 with the messiah 2 pro installed. After several grueling hours I was able to complete the job. I am able to boot up DVD-R and CDR PS2 games, DVD movies, and PS1 originals.

I AM UNABLE TO PLAY PS1 BACKUPS!

Not a huge deal but I want the complete solution so I am looking into correcting. I am 95% sure that the SCEx wire is installed in the correct place but I need to verify a proper connection. Is there a way to check to see if I have the correct voltage from the SCEx or can I check continuity with something on the topside of the board? I do not want to go through the pain the the a$$ that I did to get access to a desoldering station.

So does anyone know how the check my SCEx connection without pulling off the smaller PCB?

I really appreciate your help!

Magik

[necrolop]

The top side SCEx wont do the job, ull need to desolder the dighterboard yup. You dont need a desoldering station, just buy some Desoldering braid at RS for a few buck, probably a more powerfull iron aswell, 40 watst will do, to take out those 4 pins. Do it from the daughterboard side, not the motherboard side.

[magikempire]

necrolop,

I know that is one solution but there has to be a way that you can at least check to see if it is functioning properly. There must be a voltage on the line that can be checked or a some way to check things out. I messed around with the SCEx connection twice so I am almost positive that I am connected correctly. I just need to check things out.

Anyone?

Thanks,
Magik

[charlie_ps2]

SCEx pulses from c. 3v to 0v twice when a disk has just been put in and electrons are whirling.

I assume you've put SCEx in the right place on the other side. Well you can measure the pulse by putting your meter (+) on the SCEx spot of the Messiah 2 and the (-) to any GND point - better not on the chip lest you accidentally short.

[magikempire]

charlie_ps2

Thanks! That was the answer I was looking for. I'll try it out tonight and report my findings. I was sure there was some way to get around the dreaded disassembly of that rear board.

Thanks!!!!!

Magik