magic 3.1 in v7 install problems

**testure** · 03-14-2003,03:03 PM

Installing a magic 3.1 in a v7 and having some problems booting backup ps2 discs. The machine will boot PSX and original PS2 disc but no ps2 backups. Since PSX backups boot I can assume that the power, ground, Z, RST and S are working..correct?

Per the faqs I double checked the B and C points. Using the tone setting on a multimeter I was able to get tone from the B and C points on the magic 3 to seperate legs on the chip next to where the B and C points are on the motherboard. I'm no multimeter genius, but i think this tells me the solder joint is good. I did the same test on other points such as Q,T,U,V,R and D,G,H,I I was able to get tone by following the lead to another point on the motherboard. Again, I'm not multimeter master so I don't quite understand how the ohms setting works. But I did test all the points by putting the negative side of the multimeter on the copper on the outside of the motherboard and went to each solder point with the positive. I get a very low ohm reading, which i think is a good thing.?

Anybody got a pointer as to what my problem could be? Is it time for a laser adjustment? I'm leaning that way but from what I have read on here laser adjustment seems to be more for when DVD-Rs do not work. I can't get CD or DVD PS2 backups to work. Oh the same backups work on another PS2 v7 chipped with a magic 3.0

thanks for any help.

charlie_ps2 · 03-14-2003,04:29 PM

The test of putting each point to ground would reveal nothing of value. So we should forget about that.

So you have at least proved that the Magic chip is wired to the corresponding points on the motherboard.

So it's likely that some points on the BIOS are bridged or solder splashed or solder balls have gotten into the works. So you should look for shorts. Might be easiest to do this on the chip.

supermart · 03-14-2003,09:22 PM

im having the same problems with magic 3 and a v7 board but on reading this site more i relise there seems to be a problem with bios versions as sony have changed then
my bios has all some pins missing in centre but looks like soldered
also look on chip and read site more

**testure** · 03-14-2003,10:15 PM

bios is an 050

i've tested all the point on the bios chip for bridges. and i'm pretty sure there are none..... basically i put my multimeter continuity mode. put one of the leads on the magic 3.1 point P. took the other lead and touch the bios pins on both sides of P.... got no beep. touch pin P directly.. get a beep. repeated the process for pins o, n, m.

again, psx backup boot. ps2 originals boot. dvd movies play. just can't get ps2 cdr or dvd copies to boot.

oh well.

<< new info>>

ok, i opened up a working v7 with a magic 3.0 that i have here.

both of the v7s have a GH-019 motherboard however there are slight differences especially in the bios chips.

I noticed on the motherboard where the GH-019 is printed, the working v7 has N3 the non working one says N1

the working v7 (w/magic 3.0) the bios does not have any center pins. also the print on the chip is about twice as large. it says:

2002 seci
D 110 050 S48
B 10 070

the non-working v7 (w/magic 3.1) the bios has center pins which are soldered to the motherboard. the print on this bios says:

2002 scei
D 110 050 O48
B10070 2205M33

any clues in this? or should i just toss the magic 3.1 and get a messiah 2!! is this a case of magic's liking some PS2 and not others?? i think this is my last magic install. time to convert to messiahs.

screwedMN · 03-16-2003,05:06 PM

having same exact problem with a m3.1 and same numbers opn bios
hope somebody knows whats wrong

**Racer** · 03-16-2003,08:52 PM

I have yet to have a v7 that did not work with a Magic 3.1 I have done alot, so I am pretty sure I have had the same motherboard's as you are describing.

Its either a bad chip, or you are off a pin somewhere. Its not too hard to miss one that is for sure.

NBK19 · 03-16-2003,08:56 PM

Check point R ... If nothing try using the Alternate W point.

CN-Twat · 03-16-2003,09:27 PM

First Check to see if PS1 backups boot this could give a indication if the chip is working or not. Also I have yet to see a NTSC PS2 that the magic 3.x has NOT worked at all unless the chip was bad.

NBK19 · 03-16-2003,10:59 PM

LOD, He said PSx backups boot

**testure** · 03-17-2003,10:35 AM

thanks for all the help. i have let it set most of the weekend. so i will check all the points again tonight, which will make about the 10th time. who knows, maybe i did miss one. if i can not locate the problem with a few more hours of work, i am gonna yank out the magic and put in a messiah 2. when it shows up that is.

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