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V7 PS2 Powering on, but only showing black screen
V7 PS2 Powering on, but only showing black screen –
I have this V7 system that is still able to power on, but only shows black screen and won't go to the browser or anything. This playstation had a Magic 2 chip in it, and over time it got worse and worse where sometimes it wouldn't boot up, but other times it would. It finally quit booting into the browser at all. I took out the Magic II chip today and then tried to turn it on, still getting the same thing. Is there anything I can check, or is the mainboard just completely shot now? I should also mention I checked the board very thoroughly and I don't see any places where traces are trashed or solder is splattered. It was a problem which was slow to develop, and from what I understand those old magic 2 chips were quite harmful to systems - but what exactly could they harm?
have you checked all the fuses?
No, I wasn't sure which ones could cause this sort of thing. I'll go through the entire set tonite though to see if any of them are blown.
Originally Posted by kl1k
Well, I've tested all the fuses and double and triple checked all the bios connections - all are clean. The only thing I can think is the power supply or or the LA6508 or BA5815FM IC chips. Could either of those chips cause the screen to only display black when I turn it on?
unlikely - for a black screen on startup, the problem is notmally around the bios area. have you checked for shorts with a magnifying glass. sometimes a extremely small drop of solder misses the eye but can cause problems.
Yes, I used a magnifying glass. I am positive there are no shorts at all around the bios area - very positive.
Originally Posted by kl1k
afraid it sounds terminal then.
Well, an update to this - I tried the old "oven trick" with this board, and I cooked it at 170 degrees F for 3 minutes. It still behaves exactly the same - I can reset it 15 times, and have it actually boot up once out of those 15. Once it boots up, it plays games and everything just great - but if you shut it back off again, it refuses to boot up again until you get lucky after 15 or so tries. I have no idea what could cause this kind of behavior. It's definitely not fuse related or bios-bridge related.
thats definately weird - could be a faulty cap or resistor causing the CPU to not startup properly. doubt it will help, but it it wouldnt harm checking a few resistor value's where you have soldered. the A and S points come into mind.
i know for xbox this is called coma console and it means something with the original bios is messed up. Is there a way to reflash the bios?