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| Resuerrecting Unigor 6e |
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| TAMHAN:
Hello Folks, nice to finally join the forum after reading around for many, many years. Let's get to business: I am, as of today, the proud owner of a vintage Unigor 6e, which I got off a greek fellow who got it from a training academy. I took it apart and found out that the mechanical meter works, but that the electronics seem to have an eeker. The meter had some "rough times", as it was obviously taken apart once for an exchange of one of the banana plugs (red instead of black). After a few hours of cursing and getting help from el girlfriend, we now have the meter so far that it: a) reflects on battery capacity b) shows +inf when in resistor mode c) shows a zero-ish value in all other modes Our main issue is now - in addition to the non-zerping - this, that the meter always sees a "phantom" resistance. So in the highest resistance measuring mode, we are always getting 200 kOhm, even if the clamps are perfectly open. We tested the resistance measuring mode by attachng an external voltmeter: all the lower ranges get the proscribed voltage, while the highest one is limited to 20% of it. When measuring the internal resistance of the voltmeter, by and large, the internal resistance looks good as seen from an ohmmeter attached across the Unigor under Test. Ideas, anyone? If yes, big thanks! |
| TAMHAN:
Update: this multimeter, obviously, is sexist towards males. My GF partially tore it down mechanically, reassembled it and suddenly the R modes seem to work again. Now, just the zeroing remains... P.S. We just wired 10 Bucks to some Austrian fellow who has the "big" service manual. We expect to get it, and will probably post it here when we can. |
| jeroen79:
elektrotanya.com has some manuals for the unigor 6e as well. Free but limited to 2 a day. |
| Balaur:
Good luck on your resurrection. (By the way, is there any link between this model and the Russian 4313/4315?. The form factor is similar) I've recently restored my father multimeter (a French VOC 40 from the '70s that I've broke when I was 10 or so). I've deeply enjoyed the project, and the multimeter is now usable, but gee, current digital multimeters are so much better in many ways. The best characteristics is the AC response. The meter is still able to measure AC (or at least, indicate something) at quite high frequencies (hundreds of KHz). |
| TAMHAN:
Hello, thank you so much for your kind wishes. First of all: I checked the ElektroTanya manuals, which contain much less data than the full repair manual which I bought (and have here, cough cough). So if anyone of you has an eeker with a 6e, tamhan at tamoggemon point com is your friend. As of now: the zeroing still doesnt work. But the manual has given me a few pointers which I will pursue on. In the meantime: I will post some pictures of the 6e, no issue if you guys want. But I am not sure whether it is similar to 3p and so on: the 6e used a taut suspension measuring system, which, according to Ganz Instruments Ltd, was an "all Görtz" affair. |
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