Anyway here is the TE, the HP doesn't count, the AVO only displays zeros, can't check the Airmec as I don't have the correct power lead handy (audiophool grade one).
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1090764;image)
And the less said about the power lead on the HP the better, now cut off & thrown in the bin. ![Face Palm :palm:](https://www.eevblog.com/forum/Smileys/default/xfacepalm.gif.pagespeed.ic.EBDwh1hCfo.png)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1090780;image)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1090784;image)
David
ahhhhhh. you always remember your first.
my first piece of nixie gear was a 5325b. still have one somewhere down in the fortress of solitude. (might be an A)
if you want it to count you have to spray those feckin' push button switches with contact cleaner and then exercise them vigorously. same for the internal/external slide switch in the back.
repeat again in two weeks. and again in two weeks. and again in two weeks.........forever.
but it was still my proudest possession until 5245 mania struck.
A quick update on the HP 5325B, I managed to unsolder & clean up the mains connector, someone had bodged on a lead they had cut off something else.
![Face Palm :palm:](https://www.eevblog.com/forum/Smileys/default/xfacepalm.gif.pagespeed.ic.EBDwh1hCfo.png)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1113720)
The front & back of the unit were also cleaned up, along with the covers (the plastic finish had gone sticky, seems to be a common problem with HP stuff).
Thanks for the suggestion about cleaning the switches, unfortunately despite cleaning them all it still doesn't work properly. I have since discovered the timebase is faulty, as the gate lamp stops flashing shorty after power up. Feeding in an external oscillator at the back restores gating operation, but I still can't get it to count or the self check to work.
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1113724)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1113728)
I either need to locate the manual or use the working 5325A (in storage) to carry on with the diagnosis & repair, at least I have confirmed all the displays are working
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
, this is always a worry when the equipment has been stored badly (damp environment) in the past, I've got rather fed up of finding display readout tubes that have cracked due to pin corrosion.
![ThumbsDown :--](https://www.eevblog.com/forum/Smileys/default/icon_thumbsdown.gif.pagespeed.ce.D027Y9gZ7m.gif)
![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=1113732)
David