btw, since this was brought up. IIRC, all iBook LCDs had two tubes in it. It was common for the displays to get dim over time. Indicating that one of the tubes failed a while ago (sometimes they just stop working on one of them, and it's dim because only one is left lighting it). So if you have a red hue from it, it's the last bulb going out. The bulb will also go out after a redish hue presents it out as it is unable to sustain the power going through the tube. It could be anthing from a leak in the tube, to the cathode/anode not working right (the most common of them) and eventually, it can't get enough power to keep the bulb lit.
Keep in mind, replacing a bulb in an LCD is not a trivial thing. You must take an awful lot of care in doing so, and make sure that you place the actual LCD part on a soft cloth and move it out of the way. Handle the screen on BOTH sides so it doesn't crack by slightly flexing if you only hold it on one edge.
Replacing tubes is a trial and error, and sometimes it can't be done. No matter how delicately it's done, just sometimes even not being careless can cause issues.
The upside is when replacing them, you do NOT need to worry about polarity. So whichever side you connect the wires to, it will light.
I recently worked on a screen that the guy said was going dim over time, and finally got really dim, and started making a red-hue.
I opened it and found that 3 of the 4 tubes died. The last one was hanging on by a thread. And that one was display red. It was almost unreadable, but I am surprised all the tubes would go over so quick (2 years) and the manufacturer wouldn't warranty it (they stopped the warranty at 90 days. Cheapskates) which I also found out the displays had a ton of issues across the net. It was notoriously known for the Backlight issues.
When picking a bulb, you MUST get the exact Millimeter length tube. Failure to do so, will result in a tube that's long or significantly shorter than the LCD. causing either improper lighting, or not being able to put together. So when you go to order a new tube. Open up the display.
It starts at the part that the glass tubes starts on either side. DO NOT MEASURE THE LEADS!!! This is NOT part of the tube length.
I will look up a great ebay I order my tubes from. Great guy, and very flexible. When I ordered the wrong size tubes, instead of returning them (he says they were too delicate to survive shipping [which I actually believe since they are extremely thin]) he gave me a discount on getting replacement tubes that were the RIGHT size.
I will repost as soon as I find the guy. He has always come through. Quick shipping and a good price for the tube.
Keep in mind, replacing a bulb in an LCD is not a trivial thing. You must take an awful lot of care in doing so, and make sure that you place the actual LCD part on a soft cloth and move it out of the way. Handle the screen on BOTH sides so it doesn't crack by slightly flexing if you only hold it on one edge.
Replacing tubes is a trial and error, and sometimes it can't be done. No matter how delicately it's done, just sometimes even not being careless can cause issues.
The upside is when replacing them, you do NOT need to worry about polarity. So whichever side you connect the wires to, it will light.
I recently worked on a screen that the guy said was going dim over time, and finally got really dim, and started making a red-hue.
I opened it and found that 3 of the 4 tubes died. The last one was hanging on by a thread. And that one was display red. It was almost unreadable, but I am surprised all the tubes would go over so quick (2 years) and the manufacturer wouldn't warranty it (they stopped the warranty at 90 days. Cheapskates) which I also found out the displays had a ton of issues across the net. It was notoriously known for the Backlight issues.
When picking a bulb, you MUST get the exact Millimeter length tube. Failure to do so, will result in a tube that's long or significantly shorter than the LCD. causing either improper lighting, or not being able to put together. So when you go to order a new tube. Open up the display.
It starts at the part that the glass tubes starts on either side. DO NOT MEASURE THE LEADS!!! This is NOT part of the tube length.
I will look up a great ebay I order my tubes from. Great guy, and very flexible. When I ordered the wrong size tubes, instead of returning them (he says they were too delicate to survive shipping [which I actually believe since they are extremely thin]) he gave me a discount on getting replacement tubes that were the RIGHT size.
I will repost as soon as I find the guy. He has always come through. Quick shipping and a good price for the tube.