Trouble with PS2 DUo2SE chip

[20cobra01]

Well I have gone over the connections with a multimeter and even resoldier a few that I thought may have been suspect, but still no joy. Should I be getting a red screen of death when trying to boot my originals without disabling the chip? Should I not be getting the red screen of death when trying to boot my back up as well? I am using a soldering shematic that I found off of modchip.com (V4 no gap bios). From what I am explaining can anyone tell me which connections sound like they may be wrong. It seems like I can disable the chip well enough so the pwr, gnd and rst are probably working. The only ones that I have questions about are the S connection which appears to be made between two componets maybe a capacitor and a resistor, the A connection which appears to be made off of a leg of a resistor. I have been able to track the continuty of the A,B, and I connections back to legs of the big chip that they are made in front of. I am starting to loose hope about getting this to work. Maybe the chip is working fine and I have a bad back up. What would this scenaro look like on a working version of a modded ps2?

[lufcfan]

Nah mate, you've got something wrong somewhere

When the Duo 2 SE is working correctly, the station will perform as it normally would - no RSOD, no disabling to get originals loading etc. The only difference is that backups will load. With originals not working enabled, but working when disabled definately points to something in the install.

Keep going, bud

[Warlock]

Use this diagram http://www.duomodchip.com/english/in..._v4_no_gap.jpg

[20cobra01]

Thanks for the information. Going by the information that PS2 Originals should work, I have looked over the install three more times now. Thanks for the link to the directions, it confirmed that the diagram I was going by was correct. I have had my back up of Castlevania Lament of Innocence give me the RSOD, but only twice, the other times I get disk errors. This thing is driving me crasy, I am running out of ideas. May just have to bite the bullet and unsolder everything and start over, but I am 99.9% confidnet in the connection that I have already made.

[lufcfan]

Disk Errors? Could be a laser or poor media or bad burn issue. What DVD Media are you using for your backups?

[Warlock]

He able to load originals with the chip disabled but not enabled so its a install problem not a burn issue.

[spedmetal]

Dont want to step on toes here, but I have seen the RSOD with an original and a Duo/Apple installed properly on a V4, but with the chip disabled it works. It could very well be a laser issue. Try booting a less laser demanding original with the chip enabled. All GTA games are laser intensive and if it takes to long for your console to boot them the duo/apple will time out its patching and you will get the RSOD. This is why if your laser goes to the browser screen at any point before booting on original it will most likely have trouble reading recordable media or even an original with the chip enabled.

V4 and earlier PS2's are known for laser issues. Didnt you say it booted back-ups before you dropped it? You may have jarred the laser out of adjustment just enough to make it not read back-ups well.

When booting an original with the chip disabled you should never see the browser/system config menu before booting.

You might be able to simply give the laser lens a little cleaning. Some people will recommend the laser cleaning disc's, I for one feel they do more harm then good.

Good luck