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Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Topic: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join! (Read 44737 times)
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chinapp
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Posts: 38
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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Reply #100 on:
May 30, 2022, 06:51:58 am »
is it means fix the cut trace can make the mV option on ?
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TiN
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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Reply #101 on:
May 30, 2022, 08:26:04 am »
Making meter "detect" mV option will not magically add missing components, no?
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chinapp
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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Reply #102 on:
August 17, 2022, 10:58:00 am »
seems no more info on this ............
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meandeev
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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Reply #103 on:
August 18, 2022, 06:56:10 pm »
Hello,
was there somebody in and removed some components?!
Attached you can find a photo of the mV-option of my 4920 and also the 400978-2.5 firmware of this device (Sticker says 2.5, inside the firmware you can find the number 2.05)
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chinapp
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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Reply #104 on:
August 27, 2022, 09:22:14 am »
thanks so much for your pic
it seems not a big problem, could you give a view of the five transistors? can not get the model of them,and also the foil resistor beside the fuse
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chinapp
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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
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Reply #105 on:
June 09, 2023, 09:54:19 am »
recently research update >>>
the main board of none mV option 4920 is different to the mV option added 4920,so it seems there is no way to update
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