Gateway 900G 19" LCD monitor: LVDS cable GLUE?

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  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6039
    • USA

    #21
    Re: Gateway 900G 19" LCD monitor: LVDS cable GLUE?

    Originally posted by eccerr0r
    FUUQ
    Now I know why this thing gets so hot... I thought it was a switching power supply and then I notice a TO220 with

    7812 ***

    printed on it... aaaahhh....
    *** This will give you more heat if loading the hell out of it ***

    Comment

    • eccerr0r
      Solder Sloth
      • Nov 2012
      • 8701
      • USA

      #22
      Re: Gateway 900G 19" LCD monitor: LVDS cable GLUE?

      Boom!
      Attached Files

      Comment

      • sam_sam_sam
        Badcaps Legend
        • Jul 2011
        • 6039
        • USA

        #23
        Re: Gateway 900G 19" LCD monitor: LVDS cable GLUE?

        Originally posted by eccerr0r
        Boom!
        Ops not going very good it has seen better days

        How hard would it be to put a buck converter board in place of the lm7812
        Because they also make switch regular that runs a lot cooler and does not require a heat sink unless you run the hell out of it they have voltages from 3.3/5/12 and an adjustable version as well of this type of regular

        Here is a website that sells the 5 volt version of this type of regulator I have used them in the past and they work very well and do not run very hot

        https://www.futurlec.com/Mini_Power.shtml

        Here is the 12 volt version of this type of regulator however they do not offer the single power rail anymore unfortunately but you just make a board using the same exact parts

        https://www.futurlec.com/Mini_Power_Dual_12V.shtml

        Here is the 12 volt version 3 amp version of the same type of regulator

        LM2576HVT-12

        Here is the 5 volt 3 amp version for this type of device

        https://www.futurlec.com/Mini_5V_High_Power.shtml

        I only posted this information for reference purposes
        Last edited by sam_sam_sam; 04-16-2022, 03:15 AM.

        Comment

        • eccerr0r
          Solder Sloth
          • Nov 2012
          • 8701
          • USA

          #24
          Re: Gateway 900G 19" LCD monitor: LVDS cable GLUE?

          Other option is to relocate the 7812 to a different heatsink perhaps, but I just noticed something else...probably have to desolder the diode but I noticed it seemed a little leaky... this would cause some heat...

          Comment

          • eccerr0r
            Solder Sloth
            • Nov 2012
            • 8701
            • USA

            #25
            Re: Gateway 900G 19" LCD monitor: LVDS cable GLUE?

            Welp, in went some new caps and the monitor is alive again. Posting this so I have a record when I last changed them...again...

            Some Chemicon and Nichicon caps went in this time, and two 470uF 25V caps went in instead of a 1000uF 25V. I think the former might be better as it's more surface area to dissipate heat.

            Now...when will be the next time I repair this monitor...

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