Question about ATI RADEON X1650 Graphic Card

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Burnt out 3 diodes..what are they?

Hi,
I got a second hand x1650 agp card from an auction site (fully working apparently)
On connecting it up to the psu and turning on the pc, nothing happened (except the motherboard yellow light came on on the pcb). My psu is a 350W.
I tried to boot up again but this time i disconnected the 4 pin molex plug from the psu, and in horror i watched as the 3 diodes (D1, 3 &4) right next to the 4 pin plug socket, burn out!

Firstly, what are these diodes and where can i get them (or equivalent alternatives that will work)

and secondly, should this have occured (and why) or does this mean the board was dodgy to start with?

And, any chance of a schematic anywhere so i can try to repair it.

Thanks ever so much,

Paul

Posted by on

  • paulypj Apr 08, 2008

    could it be that it was wrapped in standard bubblewrap in a jiffy bag that may have caused static damage...
    nothing else is burnt out just 3 identical components that seem like smt diodes.
    dont suppose anyone has replacement ones or alternatives?
    perhaps i should just let the board go, and in future get one from a shop and not ebay ;-)
    well if anyone else can help me or has a dead board they can give me that has identical components id be grateful.
    thanks

  • Stuart
    Stuart May 11, 2010

    The board could well have been dodgy
    Do you have a close up picture of the burnt out components.
    Are there any others the same in the same area of the board.


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Look man that molex connector is providing the mass of the power that board uses w/o that i would think it'd be hard to fry anything unless the board was already screwed :( i think replacing them only to watch it happen again would be no fun :(

Posted on Apr 08, 2008

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