Question about Hitachi 53UDX10B 53" Rear Projection Television

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Bow in tv

Tv bows down and up from the bottom and colors do not line up.
Had the covr board fixed but did nothing.
could it be the deflection board?
one resister is reading 2 ohms is that good or bad
resister colors are red ,white, silver ,gold

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  • ernie trumpold May 11, 2008

    Is there a way to test the ic's

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Hello trumpold,

The bad new is the resistor is bad. If it is reading 2 ohms its bad because the rated value is .29 ohms and 5% tolerance. I would venture to say that the convergence amplifiers have gone bad. due to excessive current. Since the deflection and convergence boards work together they might both be defective. I would first suggest that you take the TV to a qualified TV repair shop, to perform the repair, but if you what to do this yourself you will need the following items:

1) Schematic of the TV in question (www.servicemanuals.net or www.manualsparadise.com

2) Signal Generator or use the on-board Signal Generator (look in schematic for usage.

3) Multimeter (for resistance, and voltage readings)

4) soldering iron, solder, and de-soldering tools (solder wick, and de-soldering pump)

With these items you should be able to determine the components you need to change, and remember follow the instructions in the schematic exactly as to board removal.

Before reinstalling the convergence board after changing out the convergence amps and ALL (I maen ALL) biasing resistors, check for solder bridges and shorts, removing them with the solderwick.

I hope this helps

Thank you,

Shuttle83

Posted on May 11, 2008

  • Henry McKelvey
    Henry McKelvey May 11, 2008

    Hello trumpold,



    The IC themselves can not be tested as if in a static test device, however you can test them by looking at the voltages an comparing them to the values in the schematic. also you could use a Huntron Tracker to compare it to a know good IC. These are the two way that you could test the ICs in question.





    I hope this helps,



    Thank you,



    Henry A. McKelvey

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