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Author Topic: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!  (Read 42738 times)

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Offline chinapp

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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
« Reply #100 on: May 30, 2022, 06:51:58 am »
is it means fix the cut trace can make the mV option  on ? :popcorn: :popcorn:
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Offline TiNTopic starter

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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
« 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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Offline chinapp

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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
« Reply #102 on: August 17, 2022, 10:58:00 am »
seems no more info on this ............ :scared:
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Offline meandeev

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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
« 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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Offline chinapp

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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
« 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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Offline chinapp

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Re: Restoration : Wavetek 4920/4920M teardown, repair and usage cases, come join!
« 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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