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Test Equipment Anonymous (TEA) group therapy thread

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bd139:

--- Quote from: Vince on June 26, 2022, 03:47:41 pm ---
--- Quote from: bd139 on June 26, 2022, 03:14:23 pm ---

And the culprit came up with the expected zero ohms resistance across it as expected. Lurking in the corner under the HV shield.

--- End quote ---

That's a rather colourful Tant you have here ! So far I had only seen them yellow orange red or blue, now I see they even exist in flashy green.
Soon we can make a rainbow out of them.

Any other colours I am not aware of ?!  ;D

--- End quote ---

Black, disguised as silver mica brown and the lesser spotted “firey inferno”

TERRA Operative:

--- Quote from: bd139 on June 26, 2022, 03:14:23 pm ---And now for something completely different. A small 50 ohm load. 10KW. And yes, that's the coax connector on the front  :-DD



--- End quote ---

Should have asked the seller if they had a BNC adapter for that thing...  :-DD


Also, that 3311A foot is a prime candidate for the 3D printer. I'd bet there's even a design online already.

bd139:

--- Quote from: TERRA Operative on June 26, 2022, 04:04:51 pm ---
--- Quote from: bd139 on June 26, 2022, 03:14:23 pm ---And now for something completely different. A small 50 ohm load. 10KW. And yes, that's the coax connector on the front  :-DD



--- End quote ---

Should have asked the seller if they had a BNC adapter for that thing...  :-DD


Also, that 3311A foot is a prime candidate for the 3D printer. I'd bet there's even a design online already.

--- End quote ---

Yeah highly likely. I may just resort to low tech rubber stick on feet though  :-DD

BU508A:

--- Quote from: Vince on June 26, 2022, 03:47:41 pm ---Any other colours I am not aware of ?!  ;D

--- End quote ---



There you go, now you can build your tant-cap-rainbow.

 ;D

Edit:

Haven't found an octarine one. Sorry.  ;)

Specmaster:

--- Quote from: Vince on June 26, 2022, 11:30:10 am ---
--- Quote from: TERRA Operative on June 26, 2022, 11:05:44 am ---

--- Quote from: med6753 on June 26, 2022, 10:50:50 am ---
--- Quote from: TERRA Operative on June 26, 2022, 10:30:30 am ---
--- Quote from: med6753 on June 26, 2022, 08:42:14 am ---

--- End quote ---

Ooooh, I hate those blue trimpots, I find they are almost always faulty in the TM500 gear I've repaired. I replace them on sight now...

--- End quote ---

Interesting. I've never had issues with them.  :-//

--- End quote ---

Yeah, not sure why I keep finding the bad ones. Usually the grey ones are ok, but I've had a few bad ones of those here and there too. Last one was broken in the center 'axle' so the turny bit kept falling out.

--- End quote ---

Same here, I concur !  :scared:

When I bought my 5000 series scope, found many of thes horrible trimmers on the two CRT boards. Half of them had fallen apart in the way you describe, knob falls apart because the thin plastic shaft holding it to the body of the trimmer just eventually breaks off, disintegrate, leaving you with no wiper because it's part of the knob !  :palm:  Cheap horrible design.

So I went to replace them all, but to my surprise the pin layout and pitch was somehow unusual and I had difficulty finding a suitable replacement. Eventually found a brand and model that was identical, but hard to find. Since I needed many different values, I could not find any place in Europe that carried all the values I needed in stock. An Ebay seller would have one particular value, another would have another particular value, and Farnell would have 3 or 4 tops. Only Mouser IIRC in the USA had all the values available, so I resorted to paying a silly amount to import them.

So yeah, I HATE those trimmers too ! :-DD




--- End quote ---
Sounds like someone has been guilty of using the wrong type of contact cleaner on those.

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