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Test Equipment Anonymous (TEA) group therapy thread
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Specmaster:

--- Quote from: bd139 on July 19, 2022, 11:34:03 am ---Oh look some TE content  :-DD

Ok Tek 465B update. Couldn't resist it and have some dead time to burn. Literally burn today. Eish.

So stripped down the 465B and decided to test the pin that was controlling the faulty address line to make sure that it wasn't being shorted to something other than the 5V rail before stuffing a new chip in it. Tested fine. Looks like the chip was a random failure of some sort. I will see if I can crack open the cerdip and have a look at some point at what happened but I lack a suitable vice and microscope (at the moment  :-DD).

To do this, I slipped the leg off something else into the hole and clipped it with the Keysight micrograbbers. They are quite good. Fluke 75 because, well it was already on the desk.



After I was happy I probably wasn't going to blow the investment up immediately, in it went:



The entire unit channel switching was retested and all is good  :-+

Showcase shot of course of both working 465's connected to the DG811.  They have been put away as they suck up 90W and it's too fucking hot to run them for more than that.



Not visible too well from the picture is the 465B is super crisp compared to the 465. Once I get my probe situation sorted I will check the power supply out on the 465. It may need some filter caps. I have a plan for a new way to solve the capacitor problems in these scopes which I will detail shortly. It involves a simple "module" on one PCB. No individual adapter boards!

Remaining issues are the CH1 attenuator knob on the 465B is on the wrong location clearly because I was drunk when I cleaned it. The slope switch on the 465 delay timebase is broken and they both need new feet. I will sort those issues out when I've moved.

Now I'm going to sit in front of the fan with a pot noodle and beer like a chav  :-DD

Payment has been sent to the seller as discussed with them on iMessage. Always good to foster good business relations because I'm probably going to need them in the future and I'm sure they need reliable customers too.





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They look good together and I was just going to say that the 465 display was not as crisp, but then you covered that in the text  :palm: Looking forward to seeing what this capacitor module solution thingie is when you unveil it soon  :-+
Saskia:
This is heavy weight clutter (still trying to reorganize and get that shit back to operational)
mnementh:

--- Quote from: med6753 on July 19, 2022, 02:10:56 pm ---
--- Quote from: Neper on July 19, 2022, 01:39:38 pm ---
--- Quote from: BU508A on July 19, 2022, 12:55:40 pm ---
--- Quote from: med6753 on July 19, 2022, 12:01:18 pm ---For those who think my benches are never a mess. 465B spread all over bench 1 and 2. I finally have some time today to clean this up.

The severe storms last night bypassed here. Not even a rumble of thunder. It's 8 AM here and I already have the A/C cranked up in anticipation of +90 F temps today.



--- End quote ---

I can't spot any mess. What are you talking about?  :-//   ;D

--- End quote ---

He doesn't have the first idea of what a decent mess looks like.

--- End quote ---

I guess I never was good at being a slob.  :P :-DD   I should post a pix of what my neighbors have done to their side of the garage.  :palm:

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Yes; agreed. Rank amateur mess, that. Would barely get a raised eyebrow from Mrs. Edelson...  :o

mnem
Zoli:

--- Quote from: mnementh on July 19, 2022, 01:06:06 pm ---
--- Quote from: Cerebus on July 19, 2022, 12:39:34 pm ---OK, the temperature here seems to have peaked for the day at 40.48ÂșC. Feels like I could solder things by blowing through a straw. Am now going to go and sit in a corner and quietly melt.



--- End quote ---
*airlifts our resident aardvark a pitcher of chilled apricot brandy and a bale of chocolate-covered ants*

mnem
"heh... let's get C wasted and just listen to him talk..." >:D

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That's unforgivable sin; the apricot brandy is proper at cellar temperature.
Zoli:

--- Quote from: Saskia on July 19, 2022, 02:28:53 pm ---This is heavy weight clutter (still trying to reorganize and get that shit back to operational)

--- End quote ---
Still enough room to move around, even for the Dwagon...  :-DD :-DD :-DD
/ducks
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