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Author Topic: Hitachi V-660 oscilloscope is shrinking the stroke  (Read 677 times)

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Offline Paulo RatoTopic starter

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Hitachi V-660 oscilloscope is shrinking the stroke
« on: August 01, 2020, 07:47:58 pm »
My Hitachi V-660 oscilloscope is showing a defect it is shrinking the line and I need help to fix it, thanks in advance
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Offline George Edmonds

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Re: Hitachi V-660 oscilloscope is shrinking the stroke
« Reply #1 on: August 02, 2020, 01:55:28 am »
 :-BROKE

Hi first check the power supplies, but be careful they are switch mode

George
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Offline Paulo RatoTopic starter

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  • Country: br
Re: Hitachi V-660 oscilloscope is shrinking the stroke
« Reply #2 on: August 02, 2020, 02:38:38 pm »
already checked friend and everything is fine.
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Offline SilverSolder

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Re: Hitachi V-660 oscilloscope is shrinking the stroke
« Reply #3 on: August 02, 2020, 04:04:27 pm »
Have you got the service manual?
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Offline Paulo RatoTopic starter

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  • Country: br
Re: Hitachi V-660 oscilloscope is shrinking the stroke
« Reply #4 on: August 02, 2020, 04:32:44 pm »
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Offline madao

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Re: Hitachi V-660 oscilloscope is shrinking the stroke
« Reply #5 on: August 02, 2020, 04:35:23 pm »
and pleas check HV,, probably is HV to much high.  (small and bright picture = to much HV )


greetings
matt
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