Messiah 750 Random Problems on new Slim EURO PAL 75004 GH-041-34 PS-2!!

[retroborg]

Messiah 750 Random Problems on new Slim EURO PAL 75004 GH-041-34 PS-2!!

Hello,
I just installed a Messiah 750 Mod chip in a brand new Slim EURO PAL 75004 GH-041-34 PS-2.
http://www.cj-inter.com/modchip/small%20image/Messiah%20750%20for%207500x%20PAL%20AND%20NTSC.jpg

The chip does work, but I encountered some problems!
Some times in random, when I insert a PS-2 game CD/DVD (Either original or copy), it will begin to boot but after the “PlayStation 2 Logo” shows up, it will show the Red screen saying that it does not recognize the disc. Some times it will even go past the PlayStation 2 logo screen but it will give me the Red screen after the game title screen shows up and after I press the start button.

This happens randomly in both original & copied CD/DVDs and I don’t seem to find any specific pattern!

I used the H2O V14 diagrams:
http://d-vices.com/subzero/h2o-14.jpg

I have connected the “Z” point but not the “H” point which is for the Japanese PS-2s.

The only thing that could have gone wrong was that I originally connected the 5V point of the chip on a ground point on the PS-2 PCB. So when I 1st started the PS-2 it did not boot up at all, but I corrected that and now it works but with the above random problems.
The rest of the connections are all fine.

Could this be a defective chip?

I've read that you should not connect the "Z" point, but could that be causing the problem?

Any help will be appreciated.
Thanks in advance.

[ps2daddy]

you might want to try a differnt chip that is not one by any of the major chip makers

[retroborg]

I disconnected point "Z" but the problem persists.


How about the MOBBO 750 v1.82?
Will that solve the problem and work better on the GH-041-34 PS-2?

Is the MODBO 750 v1.82 an “Autoboot” mod chip like the Matrix Infinity or do you have to press Reset button to cycle between PS-1/2/DVD modes?

If so could anybody post the operation modes for the Modbo?

Thanks in advance.

[ps2daddy]

I think the modbo is an infinity clone

I would only use a chip like a matrix infinity, ghost, Duo, or DMS4
I have had very good success with ifinity chips and duo they work really well

[retroborg]

Yes, it's an infinity clone.
Obviously the original Matrix & ghost, duo, etc… will work perfectly, but I just want a cheap solution for this case.

The local supplier is selling the Modbo 750 1.82 for 8Euro & another supplier is selling the Modbo 745 1.75 for 10Euro.

I’m not sure what’s the difference between the two however.

[ps2daddy]

yeah you usually run into some problems with clones though at least in my experience so I just stopped using them