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 Television Repair - If you need to send or take the TV to a service center, the repair could easily exceed half the cost of a new television...
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Projection Television Repair. Projection television troubleshooting and repair,typical repair problems and answers...
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Projection Television Repair
Some examples of problems encountered common to Projection television sets with tips on Projetion television repair.
Example 1:
Magnavox 6P5441 C103 projection TV does not power up.
fuse with no change. R416 was burned on the large signal board.
The reason why the resistor burn and decrease in
value is because the wattage value was larger than the value of the
resistor value. If it was a 1/2watt resistor and wattage goes above
that value for a giving point of time your resistor will burn until
it is burnt open. Look for a Elect. capacitor somewhere close by
and check it. Check for component that could be shorted.
Example 2:
Pioneer SD-P5181-K projection TV has what
appears to be pincushion problem at the bottom edge resulting in an
arc 2-3" at the mid-point.
Replace the convergence IC and check power resistor
for leakage, if values are not exact replace them. Once the parts
are in place perform the alignment.
Example 3:
Hitachi 46ux7b projection TV Chassis AP13,
sound is ok but images on picture look smeared, almost like a
bas-relief look. Also, the luma signal looks a little low and when
the crosshatch gen. is connected to the video- in port, the vertical
lines are clearly visible but not the horizontal ones.
Take out the
comb filter and replace the surface mount electrolytic capacitors on the comb filter and put it
back in the motherboard.
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