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Recent content by joe90uk

  1. J

    tektronix 2246 fault needing help

    Thanks Brian Looks like a good lead to me. Would this stop a single line being present though ? Joe
  2. J

    tektronix 2246 fault needing help

    Thanks for the reply. This gives me some ideas to try. The processor is a 8088. - - - Updated - - - Thanks for the reply. It is the auto level light which is flashing. All of the PSU voltages are within spec but the chart does not show the 130v AC supply which is very unstable. It is not the...
  3. J

    tektronix 2246 fault needing help

    Hi Brian The unit can't be put into self test mode because none of the buttons work and the H and V controls also have no effect. However, even without any controls, shouldn't the unit display a horizontal line? Everything points to a PSU fault because there are multiple symptoms and the PSU...
  4. J

    Are 220 V to 110 V voltage converters safe?

    There are multiple answers to this question. Lets start with 'is it safe' and the answer is yes if you are going to continental Europe which is mostly 220v AC 50hz. The UK is around 230-240v AC 50hz but I am told that there are plans to reduce it to 220v in the coming years. It would not be safe...
  5. J

    tektronix 2246 fault needing help

    Thank you for the reply. I have the service manual. It did have a fault section but did not have any help for the symptoms I have. The only fuse is on the back and that's fine. The fan operates as it should. Thanks for the help anyway. Mine does not say A or B model but the information I...
  6. J

    tektronix 2246 fault needing help

    Hi All. Im new to this so please be patient. My trusty scope has packed up, It may be my age or I could be an idiot cos I just can't seem to put my finger in the starting blocks of the problem. The unit starts up but only displays a single dot on the display. There is no vertical or horizontal...

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