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Vintage Honda Tester SRH500 Kowa Seiki Ltd
jshonda:
Well, there's a blast from the present!
I have one of these which I have used on/off for about 45 years. I say 'a blast from the present', because i used this to test some mini cooper (new type) coils. Indeed, the machine did its business (after I repaired the multivibrator) and as such, it was a perfect demonstration for my students.
Thems wos the days, all yer needed wos a set of feeler gauges an' a 'ammer! :
barry100:
Hi Mates--Barry here from Australia , I've just bought one of these, the seller had another, I was thinking of buying it as well, not working and bits missing, one of the parts was the 6 volt Nissin vibrator, I've seen others on the net from radio's etc, from what I gather ? I'll need a mechanical type w/ no polarity any thoughts?--thanks --Barry
AshimotoK0:
--- Quote from: barry100 on March 26, 2026, 12:19:39 AM ---Hi Mates--Barry here from Australia , I've just bought one of these, the seller had another, I was thinking of buying it as well, not working and bits missing, one of the parts was the 6 volt Nissin vibrator, I've seen others on the net from radio's etc, from what I gather ? I'll need a mechanical type w/ no polarity any thoughts?--thanks --Barry
--- End quote ---
I have fixed two of these by cleaning the contacts on the vibrator .... the alloy can is lined with rubber which must give off nasty fumes, which causes a lot of furry corrosion to build up on the silver / cadmium ? contacts ...but that clears away OK fairly easily with careful cleaning.
Not sure about fitting a 1950's style car valve radio type to replace the Nissin original. I would be inclined to fit a 12v semiconductor inverter to drive the transformer or replace with a mains transformer. The link below discusses this ...It looks like an earlier version to mine but uses the same Nissin vibrator. by the looks of it.
https://www.hondatwins.net/threads/vintage-electrical-service-tester.128480/
barry100:
Hi Ash--Thanks for your reply, Yes, I know about cleaning the points etc I've done it a few times in the past, but the one I'm talking about has no vibrator, Not looked into my new one yet, but the other one not bought looks to have an extra circuit board fitted , maybe it has had the modification, I don't know anything about the vibrator's other the old radio ones look the same?--Barry
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