Problem with red tinted display - Revision history

Ajkula66: /* Affected Models */

2013-01-25T04:19:47Z

‎Affected Models

2013-01-25T04:17:03Z

‎Affected Models

2013-01-25T04:12:19Z

‎Solutions

2013-01-25T04:11:21Z

‎Status

2006-12-07T19:32:51Z

‎Affected Models

2006-11-21T15:36:25Z

‎Affected Models

2006-08-17T17:00:19Z

‎Affected Models

2006-08-17T17:00:03Z

‎Affected Models

2006-05-26T09:03:25Z

‎Solutions

2005-10-10T22:06:54Z

Removed "cathode ray", added inverter replacement.

@@ Line 10: / Line 10: @@
 *ThinkPad {{A31p}} (2653-H4U and similar with high resolution displays)
 *ThinkPad {{T21}} {{T23}} (with high resolution (SXGA) displays)
-*ThinkPad {{T40}} ((T41)) ((T42)) ((T43))(14.1" TFT 1024x768)and (14.1" TFT 1400x1050)
+*ThinkPad {{T40}} {{T41}} {{T42}} {{T43}}(14.1" TFT 1024x768)and (14.1" TFT 1400x1050)
-*ThinkPad ((T42p)) ((T43p)) ((R50p)) ((T60p)) (all with 15" UXGA IPS 1600x1200 LCDs)
+*ThinkPad {{R50p}} {{T42p}} {{T43p}} {{T60p}} (all with 15" UXGA IPS 1600x1200 LCDs)
 ==Affected Operating Systems==

@@ Line 10: / Line 10: @@
 *ThinkPad {{A31p}} (2653-H4U and similar with high resolution displays)
 *ThinkPad {{T21}} {{T23}} (with high resolution (SXGA) displays)
-*ThinkPad {{T40}} (14.1" TFT 1024x768)
+*ThinkPad {{T40}} ((T41)) ((T42)) ((T43))(14.1" TFT 1024x768)and (14.1" TFT 1400x1050)
 ==Affected Operating Systems==

← Older revision		Revision as of 04:12, 25 January 2013
Line 23:		Line 23:
	Change the fluorescent backlight, which has deceased. The phosporous layer of cold tube has a high spectrum in red, with the other spectra joining in after a few seconds, resulting in white color. this usually happens with aged tubes.		Change the fluorescent backlight, which has deceased. The phosporous layer of cold tube has a high spectrum in red, with the other spectra joining in after a few seconds, resulting in white color. this usually happens with aged tubes.
	The tube is different sizes in different models. It can be ordered from some supply stores, but not from IBM or Lenovo.		The tube is different sizes in different models. It can be ordered from some supply stores, but not from IBM or Lenovo.
−
−	The problem can also be caused by a bad power inverter. The inverter converts the low-voltage DC electricity from the battery to high-voltage AC to drive the fluorescent tube. The inverter failure is often a cause of the red tint in the 600 series ThinkPads. The inverter can commonly be purchased cheaply and is much quicker to replace than the [http://www.bosstar.com/ CCFL] (cold cathode fluorescent lamp).

@@ Line 16: / Line 16: @@
 ==Status==
-It is not clear which component (screen/backlight/inverter) exactly is responsible for this.
+Reddish/pinkish hue - mostly visible on "cold" startup - is due to an aging backlight (CCFL). A replacement LCD or a backlight swap will be required.
 ==Solutions==

@@ Line 10: / Line 10: @@
 *ThinkPad {{A31p}} (2653-H4U and similar with high resolution displays)
 *ThinkPad {{T21}} {{T23}} (with high resolution (SXGA) displays)
 ==Affected Operating Systems==

@@ Line 8: / Line 8: @@
 ==Affected Models==
 *ThinkPad {{A31p}} (2653-H4U and similar with high resolution displays)
-*ThinkPad {{T23}} (with high resolution displays)
+*ThinkPad {{T21, T23}} (with high resolution (SXGA) displays)
 ==Affected Operating Systems==

← Older revision		Revision as of 09:03, 26 May 2006
Line 22:		Line 22:
	The tube is different sizes in different models. It can be ordered from some supply stores, but not from IBM or Lenovo.		The tube is different sizes in different models. It can be ordered from some supply stores, but not from IBM or Lenovo.

−	The problem can also be caused by a bad power inverter. The inverter converts the low-voltage DC electricity from the battery to high-voltage AC to drive the fluorescent tube. The inverter failure is often a cause of the red tint in the 600 series ThinkPads. The inverter can commonly be purchased cheaply and is much quicker to replace than the CCFL (cold cathode fluorescent lamp).	+	The problem can also be caused by a bad power inverter. The inverter converts the low-voltage DC electricity from the battery to high-voltage AC to drive the fluorescent tube. The inverter failure is often a cause of the red tint in the 600 series ThinkPads. The inverter can commonly be purchased cheaply and is much quicker to replace than the [http://www.bosstar.com/ CCFL] (cold cathode fluorescent lamp).

@@ Line 19: / Line 19: @@
 You can have IBM fix the problem if your ThinkPad is still in warranty.
 Or:
-Change the Cathode ray tube, which has deceased. The phosporous layer of cold tube has a high spectrum in red, with the other spectra joining in after a few seconds, resulting in white color. this usually happens with aged tubes.
+Change the fluorescent backlight, which has deceased. The phosporous layer of cold tube has a high spectrum in red, with the other spectra joining in after a few seconds, resulting in white color. this usually happens with aged tubes.
-The tube is 2mm by 20mm and is a special part that can be ordered.
+The tube is different sizes in different models. It can be ordered from some supply stores, but not from IBM or Lenovo.