QUOTE(Chancer @ May 6 2006, 10:27 PM)
This is all dependant on what it is you are running from the 12v. Any sort of chopper or blocking oscillator circuit run off it (if the supply is a permanent 12v) risks a feedback spike without any protection. caution should be taken when tapping into any supply and thought should always be given to adding a protection method. It can save headaches later when something accidentally grounds the voltage rail for a split second, in the instance of a fault etc.
Hey I don't really do all this water cooling etc so could one of you tell an old man what is a CC? Do you simply mean a Cold Cathode?
Yeah mate i second your thoughts right there. It can get very silly not to use a diode in alot of circuits like this, i wouldn't worry as much when tapping from the PSU, but like you said a diode can solve alot of problems in the cause of a fault. And lets face it, alot of people on this forum are just learning to solder and doing basic circuits, so i agree a diode would make a great add-on to their stuff.
I remember alot of people had issues with the hard wired DVD dongle on the original xbox due to back feeds, lucky i was smart enough to use a diode in the first place, so i never had any issues with it, but i know so many did.
And Chancer, you really should look into some of this watercooled stuff, i'm getting into refigerated gas using a compressor on the PC's, a nicer 1GHZ+ overclock on most systems is good enough for me, i don't think any watercooled system even using pelitors is up to this stuff, -35 degrees sounds reasonable enough to me
If i didn't think it was abit overkill for the 360 i would have gave it a shot, but obviously its getting abit far with no overclock available, and better yet i couldn't have done it without having some reasonably sized box at the side which defeated my point all together.
But yeah, watercooling is good fun, but i think also everyone should know it CAN be leathal and a leak test should always be performed for at least 24 hours before applying power to the motherboard etc. Ive seen so many sad storys of things going not quite as planned. I'm sure xboxexpert will agree with me, he seems to be into watercooled stuff also.
EDIT: i just read through the guys post where hes screwed up the 360, thats a real shame, as Chancer originally stated with feed back from devices, the inverters on cold cathodes are nasty things, and i personally think this is whats happened here, something has deffinatly gone to pot. Usually i wouldn't have thought so much about it being the DVD drive in this case, but it sounds funny. Although i do doubt it is the DVD drive still, if he boots without the drive and it fires up as normal then his board should be alright. If its still the same then he has a problem with the board and not the DVD drive (although dependant on the issue here it could be both the board and drive, if the drive went down it could have took the board out too, or vice versa.
If the board doesn't boot without the DVD drive the best i can recommend at this moment in time is to leave the board COMPLETLY without any power at all for at least 24-48 hours in some small hope it may recover, dependant on whats happened this may fix the problem.
Good look to the guy though This post has been edited by Dano2k0: May 6 2006, 11:26 PM