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Michael A. Terrell wrote:
Bob Larter wrote:
Barry Watzman wrote:
The most common cause of lines or bands in an LCD display is not blown
driver chips, it is failed ribbon cable connections between the board
with the driver chips going to the actual LCD glass. The bonding of the
ribbon cable to the glass itself fails.
It amounts to the same thing, & both are equally unfixable.
They are routinely repaired by places that refurbish large numbers of
cell phones. They replace defective or damaged LCD, and reuse the
cable.
It's a bit different for a full size screen. ;^)
Bob Larter wrote:
Michael A. Terrell wrote:
Bob Larter wrote:
Barry Watzman wrote:
The most common cause of lines or bands in an LCD display is not blown
driver chips, it is failed ribbon cable connections between the board
with the driver chips going to the actual LCD glass. The bonding of the
ribbon cable to the glass itself fails.
It amounts to the same thing, & both are equally unfixable.
They are routinely repaired by places that refurbish large numbers of
cell phones. They replace defective or damaged LCD, and reuse the
cable.
It's a bit different for a full size screen. ;^)
It can be done, with the right equipment.
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic (a laptop with a full
size screen is not the same as a cell phone with a few square inches of
screen). The number of places that do it is small enough, and the cost
is high enough, that as a PRACTICAL matter it is normally not a
realistic option.
Barry Watzman wrote:
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic (a laptop with a full
size screen is not the same as a cell phone with a few square inches of
screen). The number of places that do it is small enough, and the cost
is high enough, that as a PRACTICAL matter it is normally not a
realistic option.
When I talked to a local company I was told they had to purchase used
equipment that had been used for laptop sized displays. The techs I know
that worked there told ne the same thing. So you are telling me they
are all liars?
Arguing with Barry is like clapping with one hand...........
Barry Watzman wrote:
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic (a laptop with a full
size screen is not the same as a cell phone with a few square inches of
screen). The number of places that do it is small enough, and the cost
is high enough, that as a PRACTICAL matter it is normally not a
realistic option.
When I talked to a local company I was told they had to purchase used
equipment that had been used for laptop sized displays. The techs I know
that worked there told ne the same thing. So you are telling me they
are all liars?
Well, since you both are saying the same thing: "Special equipmentBarry Watzman wrote:
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic (a laptop with a full
size screen is not the same as a cell phone with a few square inches of
screen). The number of places that do it is small enough, and the cost
is high enough, that as a PRACTICAL matter it is normally not a
realistic option.
When I talked to a local company I was told they had to purchase used
equipment that had been used for laptop sized displays. The techs I know
that worked there told ne the same thing. So you are telling me they
are all liars?
Hell, you can do pretty much anything with the right equipment. WhetherBob Larter wrote:
Michael A. Terrell wrote:
Bob Larter wrote:
Barry Watzman wrote:
The most common cause of lines or bands in an LCD display is not blown
driver chips, it is failed ribbon cable connections between the board
with the driver chips going to the actual LCD glass. The bonding of the
ribbon cable to the glass itself fails.
It amounts to the same thing, & both are equally unfixable.
They are routinely repaired by places that refurbish large numbers of
cell phones. They replace defective or damaged LCD, and reuse the
cable.
It's a bit different for a full size screen. ;^)
It can be done, with the right equipment.
<nods> I spent about 5 years fixing laptops for a living, & teachingYou talked to ONE company. And how much do they charge for such a
repair? A few years ago new laptop LCD panels were $300 to $450. Now
many of them ... full size 15" panels for current model new laptops ...
are $60 to $80, brand new. Rebonding of the cables that connect the LCD
glass to the driver circuit boards is very rarely done. I didn't say
never, but I will say low single digit percentages (of bad panels) ever
get this "fix".
Yes, exactly.On Wed, 06 May 2009 01:37:56 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:
Barry Watzman wrote:
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic (a laptop with a full
size screen is not the same as a cell phone with a few square inches of
screen). The number of places that do it is small enough, and the cost
is high enough, that as a PRACTICAL matter it is normally not a
realistic option.
When I talked to a local company I was told they had to purchase used
equipment that had been used for laptop sized displays. The techs I know
that worked there told ne the same thing. So you are telling me they
are all liars?
Well, since you both are saying the same thing: "Special equipment
required" what's the problem?
Hell, you can do pretty much anything with the right equipment. Whether
it's economical or not is a whole different story. ;^)
In this case, if tweaking the connectors doesn't work, he's pretty much
SOL, unfortunately.
You talked to ONE company. And how much do they charge for such a
repair? A few years ago new laptop LCD panels were $300 to $450. Now
many of them ... full size 15" panels for current model new laptops ...
are $60 to $80, brand new. Rebonding of the cables that connect the LCD
glass to the driver circuit boards is very rarely done. I didn't say
never, but I will say low single digit percentages (of bad panels) ever
get this "fix".
Michael A. Terrell wrote:
Barry Watzman wrote:
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic (a laptop with a full
size screen is not the same as a cell phone with a few square inches of
screen). The number of places that do it is small enough, and the cost
is high enough, that as a PRACTICAL matter it is normally not a
realistic option.
When I talked to a local company I was told they had to purchase used
equipment that had been used for laptop sized displays. The techs I know
that worked there told ne the same thing. So you are telling me they
are all liars?
Arguing with Barry is like clapping with one hand...........
Huh? There's no contradiction here, why would anyone be lying?Barry Watzman wrote:
Yes, it can be done (rebonding the cables that go between the driver
circuit board within an LCD panel to the actual LCD glass), but it the
equipment required is relatively rare and exotic
When I talked to a local company I was told they had to purchase used
equipment that had been used for laptop sized displays. The techs I know
that worked there told ne the same thing. So you are telling me they
are all liars?
Yep. If it were me, I'd either look for a dead laptop of the same typeBob Larter wrote:
Hell, you can do pretty much anything with the right equipment. Whether
it's economical or not is a whole different story. ;^)
It is, when they ship thousands of refurbished cell phones per week.
For a one off, no, it isn't worth trying.
In this case, if tweaking the connectors doesn't work, he's pretty much
SOL, unfortunately.
He can take a chance on a dead, 'for parts on' ebay find of the same
model.
Sometimes...Barry Watzman wrote:
The most common cause of lines or bands in an LCD display is not blown
driver chips, it is failed ribbon cable connections between the board
with the driver chips going to the actual LCD glass. The bonding of
the ribbon cable to the glass itself fails.
It amounts to the same thing, & both are equally unfixable.
Sometimes...
Over the last few years, LCDs have finally started to become somewhatYep. If it were me, I'd either look for a dead laptop of the same type
with a good screen, or toss it & upgrade to a new laptop. It may be
possible to find a refurb panel, but it's probably not worth the hassle.
Interesting. It's been some years since I last fixed laptops for aOn Thu, 07 May 2009 22:31:55 +1000, Bob Larter <bobbylarter@gmail.com
wrote:
Yep. If it were me, I'd either look for a dead laptop of the same type
with a good screen, or toss it & upgrade to a new laptop. It may be
possible to find a refurb panel, but it's probably not worth the hassle.
Over the last few years, LCDs have finally started to become somewhat
standardized. I've been able to substitute different makes and models
of laptop LCDs fairly indiscriminately. Even different resolution
LCDs are usually interchangeable (except for IBMs which require
replacing, or modifying the video cable).
The thickness, and screw hole locations are fairly standardized. The
electrical signals are also usually the same, but there are a few
different types of connectors in use. Also, the location of the
connector can vary.
I've found that 9 times out of 10, if the physical dimensions of the
LCD, and video connectors are the same, the sub will work fine. I'm
currently using an IBM with a screen that came from a Dell. The new
screen is a Samsung, and I think the old one was an LG.
Andy Cuffe
True.Bob Larter wrote:
Barry Watzman wrote:
The most common cause of lines or bands in an LCD display is not
blown driver chips, it is failed ribbon cable connections between the
board with the driver chips going to the actual LCD glass. The
bonding of the ribbon cable to the glass itself fails.
It amounts to the same thing, & both are equally unfixable.
Sometimes...
Sometimes...
you can run your thumbnail across the place where the cable overlaps
the glass and cause a reconnect.
Sometimes...
you can shim the area to apply more force to the bad area.
Whaddayagottolose?
I experienced a similar problem with my PB 17 G4. I suspected theBob Larter wrote:
Barry Watzman wrote:
The most common cause of lines or bands in an LCD display is not blown
driver chips, it is failed ribbon cable connections between the board
with the driver chips going to the actual LCD glass. The bonding of
the ribbon cable to the glass itself fails.
It amounts to the same thing, & both are equally unfixable.
Sometimes...
Sometimes...
you can run your thumbnail across the place where the cable overlaps
the glass and cause a reconnect.
Sometimes...
you can shim the area to apply more force to the bad area.
Whaddayagottolose?