Anko Model 360 Tube tester Any information?

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Anko Model 360 Tube tester Any information?

Post by ibis12 on Thu Sep 27, 2012 6:17 pm

I am just getting into tube testing and tube amplifiers. I bought an Anko Model 360 tube tester on Ebay, and it appears to be broken. When you set the A,B,and C switches and insert a tube (or don't insert a tube) the unit shows 80 on Gas - 80 on Shorts - and pegs below zero on Test. Not sure where to start on the repair. Any ideas would be greatly appreciated. the meter sits below zero and the adjustment screw seems to have no effect on it.




Last edited by ibis12 on Thu Sep 27, 2012 8:29 pm; edited 1 time in total

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Re: Anko Model 360 Tube tester Any information?

Post by Bill Cahill on Thu Sep 27, 2012 7:04 pm

Hi. As a start, I'd replacee that dual electrolytic. Polarity is important. So is voltage.
That's a starting point.
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Re: Anko Model 360 Tube tester Any information?

Post by ibis12 on Thu Sep 27, 2012 8:29 pm

Thanks Bill. I have a friend looking into the part. Do you have any suggestions? Also not sure of the polarity line up on the existing cap. Thanks!

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Re: Anko Model 360 Tube tester Any information?

Post by Bill Cahill on Thu Sep 27, 2012 9:08 pm

That red top is the positive end. there are two electrolytics in one case.
The negative is on the Metal part.
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Re: Anko Model 360 Tube tester Any information?

Post by ibis12 on Thu Sep 27, 2012 9:12 pm

So both positives on the top and the negative below. I would replace it with two different caps.



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Re: Anko Model 360 Tube tester Any information?

Post by ibis12 on Thu Sep 27, 2012 9:13 pm

How about this tube??

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Re: Anko Model 360 Tube tester Any information?

Post by willy3486 on Thu Sep 27, 2012 9:50 pm

I would do what Bill said if it was mine. As far as the tube if you are concerned I would see if you could get it checked locally or order one new and tested from somewhere like antique electronic supply. As far as a diagram goes check with A. G. Tannenbaum at http://www.paontheweb.com/redirect/?id=3888
He has been supplying diagrams for well over 20 years. I got some about 20 years ago that no one had but him.

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Re: Anko Model 360 Tube tester Any information?

Post by ibis12 on Thu Sep 27, 2012 9:53 pm

That's the plan - replace the 20 mfd caps, and the diode - test the tube. Thanks for your suggestions.

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