Products > Test Equipment

Teardown - Hitachi V1065

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SilverSolder:
LOL, all the old Hitachi scopes are coming out to play.

I have a V-660 that still comes in handy as an extra couple of channels in some situations.  It was an eBay find about 15 years ago... 

It has always had a "weak" selector switch - not bad enough to outright require repairing, but mildly irritating nevertheless (on an otherwise excellent scope).

Good to see it can be fixed,  this thread has inspired me to take a look!

rbm:

--- Quote from: Moonbase on October 27, 2018, 12:38:43 pm --- Or do I have to try DigiKey’s 360-3390-ND (A28KB-BH)?  ... Would it be a functioning replacement for the original?

--- End quote ---
Hi,  This NKK A28KB-BH switch from Digikey should be a drop-in replacement for the OEM Fujisoku ALE2S-2M4-10-Z paddle switch. It was for me (see Posting #32).  The switching  configuration (DPDT-Centre off) and mechanical properties (2.54mm contact spacing and 5.08mm row spacing, switch body height and paddle size) are all equivalent.  You can purchase with confidence.

Moonbase:
Thanks a bundle, Robert! Your confirmation is much appreciated.

I wonder if I should order two of those, to find out if it was possible to somehow adapt the original paddle to it … :-) I just like it when things look original again, I guess.

In general, I’m really impressed with the quality of the V-1065C. Bought new about 30 years ago (unbelievably expensive then), 20 years of service, survived about 5 times moving house and 10 years of hibernation in the cellar and still as good as ever (well, except the switch which stuck a few days ago). All caps still fine, inside looks beautiful, all switches (except S1603) good, BNCs shiny, intensity good, and focuses as sharp as a needle still. Wow.

arw:
I also did the same freq counter hack on a VC6025 and it worked.
Was a pig to get to the links as they are under an add on board.
This daughter board has four standoff wires to secure it to the motherboard, cutting two of these enabled the daughter board to be lifted enough to get to the links. However putting it all back and resoldering the cut standoff wires,  I am fairly sure the trace is now not as pin sharp as it was before.
No amount of focus, intensity or astigmatism ajustment would bring it sharper.
A lot of cables had to be moved to get the board out enough to do the mod, so possibly the cable routing is quite critical in some area.
Will have to spend some time to debug this. A case of if it ain't broke don't fix it!

ulyanoff:
Hello guys! Maybe the author will tell you how to remove the handle v / div? Just vertically pull fails. Hitachi V-6025(Grundig SO50) Thanks !

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