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That's right, as you are counting along the bottom of the chip there are 7 pins then the big ground leg. The next pin as you keep going is the 8th.
Originally Posted by JofCore
Basically starting from the dot on the chip surface the pins go along the bottom 1-14 and then continue along the top 15-28. You don't count the ground legs as pins. Even if the diagram doesn't match your board exactly it'll give you an idea. All the fuses are marked on the board with PS references and most look very similar (black square with a number eg 50 on the top).
PS Use some desolder braid to mop up all the solder on the connections you have done especially around the bios.
UPDATE: got used/broken PS2 from ebay, can't get it to read discs...
UPDATE: got used/broken PS2 from ebay, can't get it to read discs... –
Ok, I picked up a broken PS2 off ebay and it arrived yesterday. Looks to be a V4, same as mine, based on what I can find here: http://www.modchip.com/ps2/ps2id.htm
The previous owner was selling it because it had a Disc Read Error, and when he took it apart to try to adjust it, he ran a screw thru the power/eject cable.
So I took it apart, and replaced the power/eject cable w/the one from my broken PS2 (the one I fried installing the modchip).
Booted it up, looked good, but has a disc read error when playing DVD games (still plays CD games).
So I took it apart again and fiddled w/the white wheel, and the 2 laser adjuster screws on the bottom, but wasn't able to get it to read discs.
Next, I took the drive from my old broken PS2 (which had previously read games fine -- both DVD and CD, I had previously adjusted it...). Put that in the one I got off ebay, and fired it up.
Now when I put a game in, I just get a "reading disc..." forever in the browser. No DRE, but doesn't read the disc either. (This was a DVD game, I didn't try a CD game w/this config...)
Why would the drive work ok in my old PS2, but then not read discs in this one I purchased off ebay?
What can I do to get this thing reading discs again? I think I'm still ahead of where I was before, since I at least have a board that boots up now
Ok, so when I got home, I cleaned off my laser w/a q-tip and rubbing alcohol. It looks much more shiny now. Unfortunately, it still doesn't work
Just to be sure that there wasn't some weird difference between the drive hardware (I think the one I got off ebay is a V4 no gap, and mine is a V4 gap), I swapped the lasers out.
I put my laser from my PS2 (which previously read things ok) into the PS2 I got off ebay. Same problem tho... just says "reading disc" for a while, and eventually gets a DRE.
I tried a CD-ROM game too, and it recognizes that in the browser as a PS2 disc, but when I try to run the game, it goes to a black screen for a while, spins the disc up and down, and then comes back to the browser.
What else can I try to get this to read discs? Why would my laser read discs in my original PS2, but not this one?
Really have no idea if you got this fixed or if you're still trying, but all i can say, is check the pins between point mnop on your old ps2... i bridged these, desoldered tith braid twice, then found out that there was still some there when i scraped it with a needle..even a small amount of solder will give you the black screen... Also, with no video, check fuse P14, on the back (top) of your board.