Question about Hitachi 60SDX88B 60" Rear Projection Television

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Hitachi 60SDX88BA Convergence IC - How to remove from heatsink

I am trying to replace the convergence ICs in my Hitachi 60SDX88BA. There is a horizontal metal strip over the top of the chips that is attached to the heat sink. The strip has cable straps on it. It looks like it is tabbed into the heatsink somehow, however, I can't figure out how to get this off the heatsink to expose the top of the IC's. Can anyone help?

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  • allenmi1 Jun 23, 2008

    Thanks Slinteriors,

    I was trying to do this before actually pulling out the PCB. After I pulled the board out, I see that there are two screws on either side of the heatsink (about midway above the PCB) that secure this to the front of the heatsink.

    BTW - I have another prob... can't seem to disconnect the wires from the HV unit. Service manual says to rollup the silcon boots and then push down and twist the wire 90 degrees. Is there a trick to this? I am going by feel and can't seem to get the connector fins in the proper position.


  • Anonymous Jan 24, 2009

    there is a thing funny with my hitachi - same as the previous listed above but now - red light on the front dashboard comes on - you can hear the "ignition" starting but no images - no sounds...

    what do you think?



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  • Hitachi Master
  • 8,617 Answers

Most of those have screws down one side of the heatsink going into the PC board and other models you have to unscrew the ics through the fins on the heat sink.

Posted on Jun 20, 2008

  • Sonny Berry
    Sonny Berry Jun 23, 2008

    The best way to remove the HV cable is to put tape on a set of plier jaws so as not to hurt the cable then grasp the wire about a half inch above the connection push in and twist.



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This is a defect in the convergence circuit and is either poor solder connections at the convergence ICs or defective ICs. These are large black ICs attached to a heatsink and should be marked STKxxx. If you can solder, try resoldering the pins on these ICs first. If that fails, replace the ICs. If you need more details, please update this with the model number.


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The color has gone crazy on you because your convergence IC's have gone bad.
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