Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default Green Dots

Hi everyone,

Just wondering if anyone has ever seen this: I bought a Hitachi
42EDT41 2 years ago (http://www.hitachi.us/tv/browse/plasma/plasma/
42edt41.shtml), and for a couple of weeks now, when I start it up, I
can see a bunch of green pixels grossly following the image at it
changes. As the TV gets hotter, they start to disappear and then
eventually, there are only 1 or 2 that are noticeable after 15-20
minutes. They are not burned, as they regain their color when the
image changes. (Also, as days go by, there are more and more green
pixels at start up).

This is very, very annoying. So basically, my question is this: before
they charge me 125$ for an estimation on the repairs, has anyone had
this problem and if so, how much did it cost them to get it fixed ?

thanks a lot.

--max

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Default Green Dots

The fault may be in the matrix decoder, or in the video address
processor areas. In many of the plasma sets, some of these areas are
built as part of the main display.

Your TV is serviced by module replacement, and then doing the set-
ups. Don't be surprised of the repair is very expensive.


Jerry G.
======


On Apr 16, 11:40 am, "mxbrunet" wrote:
Hi everyone,

Just wondering if anyone has ever seen this: I bought a Hitachi
42EDT41 2 years ago (http://www.hitachi.us/tv/browse/plasma/plasma/
42edt41.shtml), and for a couple of weeks now, when I start it up, I
can see a bunch of green pixels grossly following the image at it
changes. As the TV gets hotter, they start to disappear and then
eventually, there are only 1 or 2 that are noticeable after 15-20
minutes. They are not burned, as they regain their color when the
image changes. (Also, as days go by, there are more and more green
pixels at start up).

This is very, very annoying. So basically, my question is this: before
they charge me 125$ for an estimation on the repairs, has anyone had
this problem and if so, how much did it cost them to get it fixed ?

thanks a lot.

--max



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What kind of "set-ups" do you have to do on a digitally addressable
display after a module replacement? It's not like you have to
adjust the deflection and correct for pincushion.

Jerry G. wrote:
The fault may be in the matrix decoder, or in the video address
processor areas. In many of the plasma sets, some of these areas are
built as part of the main display.

Your TV is serviced by module replacement, and then doing the set-
ups. Don't be surprised of the repair is very expensive.

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On 17 Apr, 17:35, Mike Berger wrote:

What kind of "set-ups" do you have to do on a digitally addressable
display after a module replacement? It's not like you have to
adjust the deflection and correct for pincushion.


Ah, that'll be where I went wrong then


NT

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