Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair
|
|||
|
|||
Flourecent lamp for scanner
Looking for a 10" X 1/8" flourecent scan lamp for my Microtek
Scanmaker 3600. This has solder ends. No joy with Google, Ebay, Mouser, Digikey, et all. Idiotic design; the lamp is on all the time, and burns out quickly. This one burned out several years ago; decided to try to fix it finally. I think it's cold cathode, but not sure. Any ideas? Thanks JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- |
#2
Posted to sci.electronics.repair
|
|||
|
|||
Flourecent lamp for scanner
JR North wrote in message
news Looking for a 10" X 1/8" flourecent scan lamp for my Microtek Scanmaker 3600. This has solder ends. No joy with Google, Ebay, Mouser, Digikey, et all. Idiotic design; the lamp is on all the time, and burns out quickly. This one burned out several years ago; decided to try to fix it finally. I think it's cold cathode, but not sure. Any ideas? Thanks JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- Have you confirmed that its power supply is ok, by extended wiring-in any old small flourescent tube, then a matter of finding a dumped scanner , any make, and hope its lamp physically fits and is near enough the right colour temperature |
#3
Posted to sci.electronics.repair
|
|||
|
|||
Flourecent lamp for scanner
On Sun, 13 May 2012 20:35:49 -0700, JR North
wrote: Looking for a 10" X 1/8" flourecent scan lamp for my Microtek Scanmaker 3600. This has solder ends. No joy with Google, Ebay, Mouser, Digikey, et all. Idiotic design; the lamp is on all the time, and burns out quickly. This one burned out several years ago; decided to try to fix it finally. I think it's cold cathode, but not sure. Any ideas? http://support.microtek.com/static/sm3600.html It's a CCFL lamp. Microtek sells replacement lamps. You won't like the prices. I found one article where someone didn't want to spend $37 plus shipping. The web site suggest you call support for replacement info and pricing. http://support.microtek.com/tech_faqs_5.phtml See 3rd question. http://support.microtek.com/knowledgebase_1/kbdtl.php?request=KB-00006HP&vw=1&kb= Note the different phone numbers. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#4
Posted to sci.electronics.repair
|
|||
|
|||
Flourecent lamp for scanner
On May 13, 8:35*pm, JR North wrote:
Looking for a 10" X 1/8" flourecent scan lamp for my Microtek Scanmaker 3600. This has solder ends. No joy with Google, Ebay, Mouser, Digikey, et all. Idiotic design; the lamp is on all the time, and burns out quickly. This one burned out several years ago; decided to try to fix it finally. I think it's cold cathode, but not sure. Any ideas? Thanks JR HOME PAGE:http://www.seanet.com/~jasonrnorth -------------------------------------------------- The lamp is kept on all the time to keep the lamp 'warmed' up and producing illumination that appears to the CCD as 'uniform, flat' across the page. The sensitivity of your eyes is logarithmic.A CCD' sensitivity is somewhat linear [actually square law, but that's a details]. Thus, if you can barely notice brightness variation, the CCD sees that as more than a 70% change! You can imagine the tricks one has to play in the electronics to make any non-uniform brightness produce uniform images while scanning. In my experience the tube dies a slow death. If it went abruptly, could be the driver. Careful of the driver, it produces some high voltage to fire these arc lamps. |
#5
Posted to sci.electronics.repair
|
|||
|
|||
Flourecent lamp for scanner
In article ,
JR North wrote: Looking for a 10" X 1/8" flourecent scan lamp for my Microtek Scanmaker 3600. This has solder ends. No joy with Google, Ebay, Mouser, Digikey, et all. 1) I see scanners all the time at garage sales. Any one with a scanning surface the same width should have a usable lamp inside. And maybe a replacement power supply, if you need one ... 2) Look on eBay for one the same size, advertised as a replacement for a laptop display. The color balance may be wrong (because it likely doesn't use the same phosphor mix), but it should be possible to compensate for that -- maybe the scanner will do it automatically. Idiotic design; the lamp is on all the time, and burns out quickly. Well, that shouldn't happen. The technology is the same as for laptop display backlights, and they generally last a long time. But you could always turn it off when you're not using it ... Isaac |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
LED lamp sellers with 'equivalent' ordinary lamp wattages - anywhere? | UK diy | |||
Laptop LCD lamp repair... Inverter or lamp? | Electronics Repair | |||
LED,LED Lamp,LED Lights,LED Display,Automotive Lamp,LED Chip,LED Module | Electronics | |||
Energy Saving flourecent in Bathroom | Home Repair | |||
Compact Flourecent Wall Timer | Home Repair |