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Hitachi V-660 oscilloscope is shrinking the stroke
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Topic: Hitachi V-660 oscilloscope is shrinking the stroke (Read 679 times)
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Paulo Rato
Newbie
Posts: 5
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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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George Edmonds
Frequent Contributor
Posts: 375
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Re: Hitachi V-660 oscilloscope is shrinking the stroke
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Reply #1 on:
August 02, 2020, 01:55:28 am »
Hi first check the power supplies, but be careful they are switch mode
George
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Paulo Rato
Newbie
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Re: Hitachi V-660 oscilloscope is shrinking the stroke
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Reply #2 on:
August 02, 2020, 02:38:38 pm »
already checked friend and everything is fine.
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SilverSolder
Super Contributor
Posts: 6126
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Re: Hitachi V-660 oscilloscope is shrinking the stroke
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Reply #3 on:
August 02, 2020, 04:04:27 pm »
Have you got the service manual?
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Paulo Rato
Newbie
Posts: 5
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Re: Hitachi V-660 oscilloscope is shrinking the stroke
«
Reply #4 on:
August 02, 2020, 04:32:44 pm »
https://mega.nz/file/uMt2zQiT#584Mxxu3S8IuSTqq669yHTCyJ-3hfG_2P1ffHZkpDwA
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madao
Frequent Contributor
Posts: 338
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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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Hitachi V-660 oscilloscope is shrinking the stroke
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