Triplett tube tester Help

Vintage Asylum

Classic gear from yesteryear; vintage audio standing the test of time.

Hi, I have a Triplett tube tester model 3480 that I purchased on ebay some time ago. I bought it as stated "refurbished and calibrated" as I needed a good working tester my many tubes I had come across. When I got it it seemed to work just fine and I tested quite a few tubes with it. I had put it away for awhile and since I am getting more into tube gear I needed to test some more tubes. When I went to use it it wasn't working correctly.

Symptoms were-

- Line adjust would not affect meter- Line adjust pot was working as chart lights would get brighter when turned up as it usually did but needle wouldn't budge. And when I hit value to test emissions it would immediately PIN needle all the way to right.

I replaced the only 2 caps that were in the tester and deoxed the SHIT out of all controls/pots. Meter seems to be working smooth and fine. Still .....same problem ;(

The only things left to replace are the resistors on a resistor array but b4 I did that I wanted to get some input from here.

Thank you ahead for any help/info you can give me

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VH Audio

Topic - Triplett tube tester Help - vintageaudiotree@hotmail.com 22:26:08 05/27/23 (8)

vintageaudiotree, here is a helpful link in order to delete your post and - alaskahiatt 00:36:26 05/29/23 (0)

It might be better to post on the Tubes Asylum. nt - alaskahiatt 22:46:14 05/27/23 (6)

But Crossposting Not Allowed... - Triode_Kingdom 20:04:30 05/28/23 (5)

RE: But Crossposting Not Allowed... - DIY John 04:15:39 05/29/23 (1)

And he certainly wouldn't be the first....nt - Uncle Mike 04:43:50 05/29/23 (0)

I suppose I should have given him time to figure it out. Even if there - alaskahiatt 00:24:29 05/29/23 (2)

He already posted elsewhere - Triode_Kingdom 14:53:36 05/29/23 (1)

According to a followup post on AK, he duplicate posted there also. - alaskahiatt 21:36:33 05/29/23 (0)

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