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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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Tektronix 2230 vertical problem
Hello,
I have a Tektronix 2230 that seems to have developed a fault: changing the vertical position of channel A affects the position of channel B and vice-versa. They are no longer independent of each other. It's kind of like the two channels are in add mode, which as far as I know isn't the case (it's set to ALT, and the switch is functioning). Does anyone know where I might download a free schematic, or be able to suggest what part might be at fault? Thanks for any help! |
#2
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Tektronix 2230 vertical problem
On Jul 10, 2:37 am, John D wrote:
Hello, I have a Tektronix 2230 that seems to have developed a fault: changing the vertical position of channel A affects the position of channel B and vice-versa. They are no longer independent of each other. It's kind of like the two channels are in add mode, which as far as I know isn't the case (it's set to ALT, and the switch is functioning). Does anyone know where I might download a free schematic, or be able to suggest what part might be at fault? The two channels have one element in common: an amplifier power supply. It's possible that the vertical amplifier power has inadequate filtering (a bad capacitor). Sometimes you can find a bulging or leaking electrolytic capacitor by simple visual inspection. |
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