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Well thats the end of that! what a week

Discussion in 'PS2' started by Ateahorse, Mar 13, 2003.

  1. Ateahorse

    Ateahorse Member

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    Heres how it went:
    3/8 - installed v4 no solder mod
    3/8 - ps2 motherboard stopped functioning
    3/10 - checked ps1 fuse and all other components for continuity and it looked all good but due to some info decided to replace the ps1 fuse on mobo
    3/11 - gor .4 amp surf. mount fuse and soldered it on
    3/12 - checked continuity of fuse and everything checked out
    today - retried turning on ps2 as normal and nothing...(oh yeah i also replaced the PSU fuse and the reset/eject ribbon so i guess my current status would be defined as "up shit creek" pardon my language :(

    oh yeah and if anyone has any helpful info, i mean ANY whatsoever please post it!
     
    Last edited: Mar 13, 2003
  2. Icemonkey

    Icemonkey Active member

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    Back in the old NES days, it was common for some reason for me to have a problem with my system losing power due to a failed 7805 voltage regulator chip. I've noticed that the PS2 makes use of these as well. It's a black square, relatively large compared to other components soldered to the PS2 board with 3 legs coming out of one side and it'll be laid flat against the board and should be clearly marked 7805. Sorry, I don't have a link to a picture handy.
     
  3. Ateahorse

    Ateahorse Member

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    thanks for your reply, i am gonna check that out.
     
  4. Ateahorse

    Ateahorse Member

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    ok this 7805 voltage regulator, i was looking over my main board for any 3 leg attachments, and i found 3 big one, so i am assuming the big ones are what you were talking about. ok anyway 2 of them say 78M05, and 1 says TA7808, i am curious as to are the 78M05's the ones you were talking about?
     
  5. Icemonkey

    Icemonkey Active member

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    That's the one alright.
     
  6. Ateahorse

    Ateahorse Member

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    if checking to see if it is still good would i just check the continuity of it, like a fuse or a voltage reading? and there are two of them, should i replace them both?
     
  7. Ateahorse

    Ateahorse Member

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    well i looked at radio shack and all they had were the big 7805's not the smaller 78M05's
     
  8. Icemonkey

    Icemonkey Active member

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    You could probably do a little improvising if size is the only difference between the 7805 and 78M05. Just beware that the back of the chip generates quite a bit of heat and if possible, you might want to install it in such a way that the head sink is facing up against the metal ground plate and use that for supplimental cooling.
     
  9. Ateahorse

    Ateahorse Member

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    oh yeah i see what your saying, hmm well i got nothin to lose to try it, so i think i am going to go for it, but i can't do it till monday so i will just wait till then, and i will keep you posted on the turnout

    Thanks a million for all your help, you were the first person to suggest the VR instead of a stupid fuse.
     
  10. Ateahorse

    Ateahorse Member

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    ok well i had time last night to solder it but no luck, it is just too big, i guess i will have to go searching for a small 78M05 Volt Reg. but thanks for the idea anyway. hmm where can i go to get a 78M05 because 7805 is too big?
     
  11. Ateahorse

    Ateahorse Member

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    bumping this up, please help!
     

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