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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. |
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#1
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Old CRT tubes
Hello,
the CRT tube 240NB4 (green) is used in an old computer monitor. I have to replace this tube. I found a C10M36P31 (alternatively shown in the diagram for this is a 2728831) with the same dimensions. I do not have any data sheets about these tubes. Does anyone know if I can replace the 240NB4 by a C10M36P31 or by the 2728831 ? If you also have any data sheets for these tube, please send them to me, thanks. Regards Karl-Heinz |
#2
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Old CRT tubes
"Karl-Heinz" wrote in message ... Hello, the CRT tube 240NB4 (green) is used in an old computer monitor. I have to replace this tube. I found a C10M36P31 (alternatively shown in the diagram for this is a 2728831) with the same dimensions. I do not have any data sheets about these tubes. Does anyone know if I can replace the 240NB4 by a C10M36P31 or by the 2728831 ? If you also have any data sheets for these tube, please send them to me, thanks. Regards Karl-Heinz In my experience if it'll physically fit then it'll usually work fine, of course this is true only for the tube, not the deflection yoke. |
#3
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Old CRT tubes
Hello,
thanks for the answer. I made some complex checks before I replaced the tubes. The replacement was successful. Now I could see a difference between the tubes: The 240NB4 displays white characters, the C10M36P31 and the 2728831 display green characters. I had not to exchange the deflection yokes. Regards Karl-Heinz |
#4
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Old CRT tubes
sorry, the correct type is 2728B31 not 2728831.
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#5
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Old CRT tubes
"Karl-Heinz" wrote in message ...
sorry, the correct type is 2728B31 not 2728831. The P31 or P4 or B4, the last digits of the part number are the phosphor type. For instance the first color CRT suffixes were P22, P4 is a white phosphor, etc |
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