HP Scanner makes everything yellow (HP Scanjet 2400)
Hi
Here are some pictures: http://hot.ee/sonnich/scan1a.jpg http://hot.ee/sonnich/scan1b.jpg A is the original picture, 50% in order to make it fit here. As you can see only a part of it is in the right colours. A part of the original scan is the B - with "waves" in it, I have seen that before and know simply to resize. But you can see the colour difference better. What causes the yellowness and how can I fix it? It is a HP Scanjet 2400. WBR Sonnich |
HP Scanner makes everything yellow (HP Scanjet 2400)
In article
, Sonnich Jensen wrote: Hi Here are some pictures: http://hot.ee/sonnich/scan1a.jpg http://hot.ee/sonnich/scan1b.jpg A is the original picture, 50% in order to make it fit here. As you can see only a part of it is in the right colours. A part of the original scan is the B - with "waves" in it, I have seen that before and know simply to resize. But you can see the colour difference better. What causes the yellowness and how can I fix it? It looks like the signal from the "blue" sensor is intermittent -- except for that stripe halfway down, it's not getting through. This is probably due to a loose connector, a broken wire or failed solder joint, but possibly something else. In any case, the break is inside the scanner, very possibly in or around the flexible cable that connects to the traveling scan head. If you can get the scanner apart, a close visual inspection might indicate how it could be fixed. Isaac |
HP Scanner makes everything yellow (HP Scanjet 2400)
On Feb 24, 8:08*pm, isw wrote:
In article , *Sonnich Jensen wrote: Hi Here are some pictures: http://hot.ee/sonnich/scan1a.jpg http://hot.ee/sonnich/scan1b.jpg A is the original picture, 50% in order to make it fit here. As you can see only a part of it is in the right colours. A part of the original scan is the B - with "waves" in it, I have seen that before and know simply to resize. But you can see the colour difference better. What causes the yellowness and how can I fix it? It looks like the signal from the "blue" sensor is intermittent -- except for that stripe halfway down, it's not getting through. This is probably due to a loose connector, a broken wire or failed solder joint, but possibly something else. In any case, the break is inside the scanner, very possibly in or around the flexible cable that connects to the traveling scan head. If you can get the scanner apart, a close visual inspection might indicate how it could be fixed. I just found that. I can see that the cable i used, hence every 1,5 cm it seems to be broken - and there truely is one broken connection. I will try with a single wire, solder it on both ends. But are such cables available? Or should I take an old HD flat cable and older that on? Sonnich |
HP Scanner makes everything yellow (HP Scanjet 2400)
On Feb 24, 8:08*pm, isw wrote:
In article , *Sonnich Jensen wrote: Hi Here are some pictures: http://hot.ee/sonnich/scan1a.jpg http://hot.ee/sonnich/scan1b.jpg A is the original picture, 50% in order to make it fit here. As you can see only a part of it is in the right colours. A part of the original scan is the B - with "waves" in it, I have seen that before and know simply to resize. But you can see the colour difference better. What causes the yellowness and how can I fix it? It looks like the signal from the "blue" sensor is intermittent -- except for that stripe halfway down, it's not getting through. This is probably due to a loose connector, a broken wire or failed solder joint, but possibly something else. In any case, the break is inside the scanner, very possibly in or around the flexible cable that connects to the traveling scan head. If you can get the scanner apart, a close visual inspection might indicate how it could be fixed. My scanner now has an additional wire and works well. The wire moves behind the head, and does not get stuck. Maybe not the best option, but it does the trick Sonnich |
HP Scanner makes everything yellow (HP Scanjet 2400)
Sonnich Jensen wrote:
On Feb 24, 8:08 pm, isw wrote: In article , Sonnich Jensen wrote: Hi Here are some pictures: http://hot.ee/sonnich/scan1a.jpg http://hot.ee/sonnich/scan1b.jpg A is the original picture, 50% in order to make it fit here. As you can see only a part of it is in the right colours. A part of the original scan is the B - with "waves" in it, I have seen that before and know simply to resize. But you can see the colour difference better. What causes the yellowness and how can I fix it? It looks like the signal from the "blue" sensor is intermittent -- except for that stripe halfway down, it's not getting through. This is probably due to a loose connector, a broken wire or failed solder joint, but possibly something else. In any case, the break is inside the scanner, very possibly in or around the flexible cable that connects to the traveling scan head. If you can get the scanner apart, a close visual inspection might indicate how it could be fixed. I just found that. I can see that the cable i used, hence every 1,5 cm it seems to be broken - and there truely is one broken connection. I will try with a single wire, solder it on both ends. But are such cables available? Or should I take an old HD flat cable and older that on? Sonnich The cable could be made of Kapton (Polyimide), and designed to be flexed over and over again. You'd want to look for "flex cable", rather than regular ribbon cable. The solid wires in regular ribbon cable would snap after a relatively small number of flexure cycles. http://en.wikipedia.org/wiki/Flexible_electronics http://en.wikipedia.org/wiki/Flexible_flat_cable The cables can be affixed by compression. Some people at work tried soldering to make repairs, but the results were a mess. Those cables only work well, with their "native" attach method (the connector provided with the cabling). Home repair is more difficult. http://www.molex.com/molex/products/...annel=PRODUCTS Paul |
HP Scanner makes everything yellow (HP Scanjet 2400)
On Feb 24, 11:02*pm, Paul wrote:
Sonnich Jensen wrote: On Feb 24, 8:08 pm, isw wrote: In article , *Sonnich Jensen wrote: Hi Here are some pictures: http://hot.ee/sonnich/scan1a.jpg http://hot.ee/sonnich/scan1b.jpg A is the original picture, 50% in order to make it fit here. As you can see only a part of it is in the right colours. A part of the original scan is the B - with "waves" in it, I have seen that before and know simply to resize. But you can see the colour difference better. What causes the yellowness and how can I fix it? It looks like the signal from the "blue" sensor is intermittent -- except for that stripe halfway down, it's not getting through. This is probably due to a loose connector, a broken wire or failed solder joint, but possibly something else. In any case, the break is inside the scanner, very possibly in or around the flexible cable that connects to the traveling scan head. If you can get the scanner apart, a close visual inspection might indicate how it could be fixed. I just found that. I can see that the cable i used, hence every 1,5 cm it seems to be broken - and there truely is one broken connection. I will try with a single wire, solder it on both ends. But are such cables available? Or should I take an old HD flat cable and older that on? Sonnich The cable could be made of Kapton (Polyimide), and designed to be flexed over and over again. You'd want to look for "flex cable", rather than regular ribbon cable. The solid wires in regular ribbon cable would snap after a relatively small number of flexure cycles. http://en.wikipedia.org/wiki/Flexible_electronics http://en.wikipedia.org/wiki/Flexible_flat_cable The cables can be affixed by compression. Some people at work tried soldering to make repairs, but the results were a mess. Those cables only work well, with their "native" attach method (the connector provided with the cabling). Home repair is more difficult. http://www.molex.com/molex/products/...onnectors&chan.... Makes me wonder do ordinary electronics shops sell those? At some point a selection of those would meet most peoples need. I will try the 2 local dealers (Elfa and another) Sonnich |
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