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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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Are Sony '91 & '99 CRTs Interchangeable?
I've got a good '91 CRT that I want to put in a '99 TV with a shifted
shadow mask. They are both curved CRTs. I see that I'd have to rewire the CRT PCB because of different pin positions but other than that are there any other differences? Thanks for any advice. Mark |
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#2
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"MarkC" wrote in message ... I've got a good '91 CRT that I want to put in a '99 TV with a shifted shadow mask. They are both curved CRTs. I see that I'd have to rewire the CRT PCB because of different pin positions but other than that are there any other differences? Thanks for any advice. Mark The year is irrelevant, what's the number on the tubes? If the pinouts are different they're probably not compatible but you may be able to make it work, CRT's are surprisingly forgiving to substitution, though convergence and purity can be a sticky point. |
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#3
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You can try it, but I have a feeling that they are not compatible for
the HV, focus supply, and G2 supply. Some of these tubes are cathode driven, while others are control grid driven. This makes a difference of the necessity of a matched video feed polarization, biasing, and source impedance. -- Jerry G. ====== "MarkC" wrote in message ... I've got a good '91 CRT that I want to put in a '99 TV with a shifted shadow mask. They are both curved CRTs. I see that I'd have to rewire the CRT PCB because of different pin positions but other than that are there any other differences? Thanks for any advice. Mark |
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#4
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You can try it, but I have a feeling that they are not compatible for
the HV, focus supply, and G2 supply. Some of these tubes are cathode driven, while others are control grid driven. This makes a difference of the necessity of a matched video feed polarization, biasing, and source impedance. -- Jerry G. ====== "MarkC" wrote in message ... I've got a good '91 CRT that I want to put in a '99 TV with a shifted shadow mask. They are both curved CRTs. I see that I'd have to rewire the CRT PCB because of different pin positions but other than that are there any other differences? Thanks for any advice. Mark |
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