Happy Holidays to all.

My neighbor has discarded an almost new 24 inch
Insignia CRT television. It is model number ISTV040922A with
a manufacture date of March 2006 but it is beyond the 90 day
warranty period. This appears to be a cheap Chinese
manufactured store brand sold only by Best Buy chain stores.

It has a problem.

The screen display appears to have alternate scan lines replaced
with dark gray (or blank?) signal information. (as if the image
data for all the odd (even?) numbered scan lines is missing
mode. The scan lines which do get displayed appear to be "normal".
The user manual does not indicate anything relative to the
television operating in a non-interlaced mode and there is no
option for changing this in the user level setup menus.

The problem occurs with both of the composite signal input sources,
the antenna input and even the user setup menus. (The
television also has component and S-Video inputs but I have
not seen what happens when these are used as the input source.)
The implication being the trouble is located in the circuits
after the input processing (cold solder joint?; vertical blanking
circuit perhaps?).

Is it likely there is a simple fix for this problem (defective
capacitor or resistor)? Is it more likely the fix will require
a chip replacement?

Probably it is not worth taking to a repair shop as the unit is
being advertised for new sale at $119 (sorry about that TV
repair techs). It seems a shame to discard an almost brand new
television, even one as cheaply made as this one, without making
some attempt to salvage it.

Steve

Hi!

a manufacture date of March 2006

Ouch. (Looks over to June 1983-manufactured Zenith table TV that's still
working great...)

This appears to be a cheap Chinese
manufactured store brand sold only by Best Buy chain stores.

It is.

Is it likely there is a simple fix for this problem (defective
capacitor or resistor)? Is it more likely the fix will require
a chip replacement?

Checking the capacitors and similar components is worth a shot. You might
find a bad one and that could be enough to restore the set to life. Anything
else is likely to be difficult unless you've got a lot of time and a desire
to reverse engineer the circuit. Just be careful...TV sets utilize high
voltage and there may be parts inside that are directly connected to the AC
line. High voltage is mostly painful, the line voltage can easily kill.

Even if you wanted to take this TV to a repair shop, I am not sure that they
would fare any better. It is said that service information for these sets is
simply not available. I doubt the ones returned under warranty are
serviced...they probably just pick another one off the shelf and eventually
toss the old one.

William

"William R. Walsh" m
wrote in message news:FrXhh.321293$1i1.2547@attbi_s72...

Even if you wanted to take this TV to a repair shop, I am not sure that
they
would fare any better. It is said that service information for these sets
is
simply not available. I doubt the ones returned under warranty are
serviced...they probably just pick another one off the shelf and
eventually
toss the old one.

Yes. The returns wind up on eBay - sold "As is where is".

You are right! During the warrenty period, the customer is given a new set.
The old ones are put to the crusher. They are absolutely not feasible to pay
skilled technical staff and supply the parts to service them.

--

JANA
_____


"William R. Walsh" m
wrote in message news:FrXhh.321293$1i1.2547@attbi_s72...
Hi!

a manufacture date of March 2006

Ouch. (Looks over to June 1983-manufactured Zenith table TV that's still
working great...)

This appears to be a cheap Chinese
manufactured store brand sold only by Best Buy chain stores.

It is.

Is it likely there is a simple fix for this problem (defective
capacitor or resistor)? Is it more likely the fix will require
a chip replacement?

Checking the capacitors and similar components is worth a shot. You might
find a bad one and that could be enough to restore the set to life. Anything
else is likely to be difficult unless you've got a lot of time and a desire
to reverse engineer the circuit. Just be careful...TV sets utilize high
voltage and there may be parts inside that are directly connected to the AC
line. High voltage is mostly painful, the line voltage can easily kill.

Even if you wanted to take this TV to a repair shop, I am not sure that they
would fare any better. It is said that service information for these sets is
simply not available. I doubt the ones returned under warranty are
serviced...they probably just pick another one off the shelf and eventually
toss the old one.

William

Steve wrote:

Happy Holidays to all.

My neighbor has discarded an almost new 24 inch
Insignia CRT television. It is model number ISTV040922A with
a manufacture date of March 2006 but it is beyond the 90 day
warranty period. This appears to be a cheap Chinese
manufactured store brand sold only by Best Buy chain stores.

It has a problem.

The screen display appears to have alternate scan lines replaced
with dark gray (or blank?) signal information. (as if the image
data for all the odd (even?) numbered scan lines is missing
mode. The scan lines which do get displayed appear to be "normal".
The user manual does not indicate anything relative to the
television operating in a non-interlaced mode and there is no
option for changing this in the user level setup menus.

The problem occurs with both of the composite signal input sources,
the antenna input and even the user setup menus. (The
television also has component and S-Video inputs but I have
not seen what happens when these are used as the input source.)
The implication being the trouble is located in the circuits
after the input processing (cold solder joint?; vertical blanking
circuit perhaps?).

Is it likely there is a simple fix for this problem (defective
capacitor or resistor)? Is it more likely the fix will require
a chip replacement?

Probably it is not worth taking to a repair shop as the unit is
being advertised for new sale at $119 (sorry about that TV
repair techs). It seems a shame to discard an almost brand new
television, even one as cheaply made as this one, without making
some attempt to salvage it.

Steve
Yes your right these sets ARE made from failed quality parts from major
manufacturers, what I mean is they fail quality test by the major brands
and are almost functional. I have NEVER seen one with a decent pix in my
shop. If I'm right htis is a prety black cased monster. the problem you
are having is caused by the digital board. part are available from prima
of canada...But good luck getting them , and when you do the pix quality
is so bad you think why did i bother put it back in the rubish PLEASE