Did you at least get a worthwhile explosion?
Getting back to TEA, ebay is bleeding dead at the moment, anxious for new toys I can't believe it but I'm even looking at 3.5 digit bench meters, I need one of those don't I, I mean I don't any bench meters less than 4.5 and I have stacks of handhelds at 3.5....how many meters does a person require FFS?
Did you at least get a worthwhile explosion?
Nope. I watched the current creep up and waited. I usually let stuff blow up because you can see where the smoke is coming from or feel it when it's hot then. Chip was a little warm.Getting back to TEA, ebay is bleeding dead at the moment, anxious for new toys I can't believe it but I'm even looking at 3.5 digit bench meters, I need one of those don't I, I mean I don't any bench meters less than 4.5 and I have stacks of handhelds at 3.5....how many meters does a person require FFS?
I mostly run my 3478A in 3.5 digit mode if I'm honest. And the other meter on the bench today is an 8010A. For perhaps 90% of the tasks it's fine. Why not the 87V? Well it's there somewhere, under a pile of crap at the moment (I am mid build on something!). Big advantage of the bench meters is they're quite hard to lose
Yes, but in the end... it's still beer.![]()
To quench a thirst, I'll take a good fresh-made iced tea over beer anytime. If I want alcohol, there are dozens of kinds I prefer over beer, and over most wines.
[EDIT] Wine snobbery I can sortof grok... there's literally millennia of history there. But beer snobbery...? Gimme a fucking break.[/EDIT]
I drink iced tea about 99% of the time... but the occasional beer with friends is still a joy (maybe 1 or at most 2 per week). And if it's "snobbery" to want a beer that actually has some flavor to it instead of the horse p!$$ that the major breweries turn out - so be it. In my group, we call dreck like Miller and Bud "making love in a canoe" because it's f*ing close to water.
There is plenty of fakery in Cafes and Restaurants. Fairly much everything I was selling was prepped or baked from scratch by my Chef or me and a few of the staff.
The exception was Croissants I and fairly much every 'Bakery' in Australia buys frozen by the hundred then thaws/proves and Bakes. I have made them but they are another level of time up again from Danishes. We sourced a very good Butter based one but most are oil base with no flavour and of course 1/2 the cost. There is maybe 3 or 4 Bakers in Adelaide for example scratch making while the rest are doing the frozen thing.
Plenty also pass off frozen par bake bread or do the Coles/Safeway thing and buy in dough and claim it as their own.
Packing my Agilent Multimeters up for a $1k AUpeso trip to Keysight
Getting back to TEA, ebay is bleeding dead at the moment, anxious for new toys I can't believe it but I'm even looking at 3.5 digit bench meters, I need one of those don't I, I mean I don't any bench meters less than 4.5 and I have stacks of handhelds at 3.5....how many meters does a person require FFS?
I mostly run my 3478A in 3.5 digit mode if I'm honest. And the other meter on the bench today is an 8010A. For perhaps 90% of the tasks it's fine. Why not the 87V? Well it's there somewhere, under a pile of crap at the moment (I am mid build on something!). Big advantage of the bench meters is they're quite hard to lose
Started on the tant replacement on the 475A. First the main interface board, then the vertical board. I still have to order more for the trigger board. It's going to be a long and involved process but it's going to be a prudent hedge to hold back Murphy.
And here's the start of the pile. Many more to go. That one that looks like an aluminum cap is indeed a 47uf/35V "wet" tantalum. That guy is on the primary of the high voltage oscillator and has a reputation for ruining your day. The 465 uses 2 - 22uf's in parallel rather than this cap. The 465B and 475A use this bad boy. All can be replaced with a modern 47uf/35V beaded tant.
I am watching with interest, since this is on my to do list. I've actually become so paranoid about s--t blowing up in my favorite scope, that I have taken out of rotation until I take care of it.How many tants do you estimate you will have to replace?
You lot and your beer. Here's how to make something bloody amazing:
1. Go to the supermarket and buy a hell of a lot of shitty bottom grade sugar packed apple juice.
(SNIP)
9. Leave it until it stops fizzing (takes about 2-3 weeks).
10. PARTY TIME.
This is what I used to do as a teenager. If it tastes like ass then I suggest you use it to clean the toilet or as paint stripper.
You lot and your beer. Here's how to make something bloody amazing:
1. Go to the supermarket and buy a hell of a lot of shitty bottom grade sugar packed apple juice.
2. Take it home and boil it for about 30 minutes to get rid of all of the preservatives.
3. Dump about 500g more sugar in every 4L of it and stir until dissolved.
4. Get a couple of big 2L coke bottles then clean it out properly.
5. Fill them to the top and let it cool to about 28 degrees C (you can work that out in farenwongles or whatever they are)
6. Stuff a sachet of normal instant bread yeast in each one.
7. Poke a hole in the lid for the gas to escape.
8. Get a condom and poke a hole in it. Don't use it by accident here. Cable tie it around the top of the bottle. This is your air lock.
9. Leave it until it stops fizzing (takes about 2-3 weeks).
10. PARTY TIME.
This is what I used to do as a teenager. If it tastes like ass then I suggest you use it to clean the toilet or as paint stripper.
Edit: to note - condoms were terribly expensive for teenagers but we found out you could just go and ask for them at the local sexual health clinic and they'd give you a load. Little did they know we were just using them to get smashed down the local park
Ooh hot cross buns. Added to tomorrow’s shopping list now
Started on the tant replacement on the 475A. First the main interface board, then the vertical board. I still have to order more for the trigger board. It's going to be a long and involved process but it's going to be a prudent hedge to hold back Murphy.
And here's the start of the pile. Many more to go. That one that looks like an aluminum cap is indeed a 47uf/35V "wet" tantalum. That guy is on the primary of the high voltage oscillator and has a reputation for ruining your day. The 465 uses 2 - 22uf's in parallel rather than this cap. The 465B and 475A use this bad boy. All can be replaced with a modern 47uf/35V beaded tant.
I am watching with interest, since this is on my to do list. I've actually become so paranoid about s--t blowing up in my favorite scope, that I have taken out of rotation until I take care of it.How many tants do you estimate you will have to replace?
Probably somewhere between 25 to 30 by the time I'm done. These scopes probably have close to 50 of those little bastards. They range in value from 1uf to 47uf. So I'm prioritizing what I'm going to change. The 1uf and 2.2uf are most likely staying in place for now. They seem to cause fewer issues. But anything 4.7 uf and up is definitely on the radar. But I do have the some 1uf and 2.2uf on hand just in case.
But if you do decide to test Murphy and NOT do a mass replace at LEAST replace the 47uf/35V on the primary side of the HV oscillator.
Do you do an ESR test on the smaller value ones to decide whether they're suspect, or just visual inspection and the old "touch your iron to the PCB under/around the cap & smell for burning electrolyte" trick?
mnem
*Learning mode*
Ooh hot cross buns. Added to tomorrow’s shopping list now
I'm gonna put all you guys on ignore if you don't quit talking about bread.I can't have any and I'm jealous.
Bacon....YES. Bread.....NO![]()
Ooh hot cross buns. Added to tomorrow’s shopping list now
Do you do an ESR test on the smaller value ones to decide whether they're suspect, or just visual inspection and the old "touch your iron to the PCB under/around the cap & smell for burning electrolyte" trick?
mnem
*Learning mode*Just visual and is it easy to get to. Because I'm NOT pulling boards to do these replacements. Strictly from the top side which can be done on these double sided boards.
On tants, some of them are pretty reliable in the Tek scopes. Ones to watch out for are:
1. Blue rectangular ones. Those nearly always go short. They always seem to use these for HT transformer primary decoupling. They go short and blow the HT fuse.
2. Big bold striped ones. Some are suspect. Buggers to find as they don't go totally short so you cant trace them with an ohmmeter.
3. Tubular wet tantalum. Usually Sprague 150D. Occasionally one will just explode just to make your day shitty.
The solid orange and solid blue ones are pretty reliable.
The solid orange and solid blue ones are pretty reliable but that does correlate with mnem as they are usually 1uF or 2.2uF
Oh kiss my arse.![]()
Nothing like a COLD beer on a hot day.
On tants, some of them are pretty reliable in the Tek scopes. Ones to watch out for are:
1. Blue rectangular ones. Those nearly always go short. They always seem to use these for HT transformer primary decoupling. They go short and blow the HT fuse.
2. Big bold striped ones. Some are suspect. Buggers to find as they don't go totally short so you cant trace them with an ohmmeter.
3. Tubular wet tantalum. Usually Sprague 150D. Occasionally one will just explode just to make your day shitty.
The solid orange and solid blue ones are pretty reliable.As I understand it those that are subjected to anywhere near their voltage rating at most at risk of frying.
Like the 15V rated ones used on the 12V rail.
In general I find tants pretty reliable providing they're sufficiently down rated to like 2/3rds of their rating.
The solid orange and solid blue ones are pretty reliable but that does correlate with, mnem, as they are usually 1uF or 2.2uF.And who am I, chopped liver???
![]()
Oh kiss my arse.![]()
Nothing like a COLD beer on a hot day.
+1 for the cold beer