Author Topic: Test Equipment Anonymous (TEA) group therapy thread (Read 4072904 times)

Saskia · « **Reply #76225 on:** November 27, 2020, 08:27:53 pm »

Quote from: Saskia on November 27, 2020, 12:52:43 pm

picked up a UniT Oscilloscope for 60 Pesos.

you may think, but it's new in the box and should be flippable for twice the money.

And flipped.

Specmaster · « **Reply #76226 on:** November 27, 2020, 08:58:55 pm »

Well that was flipping quick (pun intended)

BU508A · « **Reply #76227 on:** November 27, 2020, 08:59:33 pm »

Quote from: med6753 on November 27, 2020, 05:40:17 pm

7603N PSU re-cap, round 2. New set of tools ready to do battle.

What happened about the desoldering station you've asked for some weeks ago?

Honestly, it makes me shivering seeing this soldering gun next to some electronics and pcbs.

bd139 · « **Reply #76228 on:** November 27, 2020, 09:02:35 pm »

That’s the same iron in saw someone at the local radio club desoldering LPF toroids with. Properly fucked up the board.

BUT it depends on the user not the iron.

mansaxel · « **Reply #76229 on:** November 27, 2020, 09:05:34 pm »

Quote from: BU508A on November 27, 2020, 08:59:33 pm

What happened about the desoldering station you've asked for some weeks ago?
Honestly, it makes me shivering seeing this soldering gun next to some electronics and pcbs.

Even the el-cheapo Chinesium ones are such magic it is simply insane to forego the force multiplier they are.

Saskia · « **Reply #76230 on:** November 27, 2020, 09:11:52 pm »

Quote from: Specmaster on November 27, 2020, 08:58:55 pm

Well that was flipping quick (pun intended)

30 minutes after initial offer for 130. Now you can get better stuff for similar money, but I am not complaining

factory · « **Reply #76231 on:** November 27, 2020, 09:38:30 pm »

Finally getting somewhere with the HP 5248M, bit tired tonight but will explain more tomorrow.

David

bd139 · « **Reply #76232 on:** November 27, 2020, 10:48:39 pm »

Ok completely off topic rant. Star Trek Discovery is a rancid sack of shit, dragging out personal relations and emotions into a bunch of poorly thrown together special effects with no story pitch or technical goodness at all. Everyone is sick and broken either physically or mentally and the acting is worse than the extras on the worst episodes of TOS. Rather than waste my time on such excrement I'm going to punch myself in the balls for 45 minutes as a far more productive waste of my time.

On topic, finally used some test gear today. The Fluke 25. To test a PC CMOS battery. I'm not doing well on the TEA front recently unfortunately. I managed to miss two auctions in a row as well. Bah humbug

. One day...

mnementh · « **Reply #76233 on:** November 27, 2020, 10:59:12 pm »

Yeah; it's kindof like they tried to Anime-ify the ST:TOS movies and condense them all down into single-episode doses. I mean... I'm adept at "suspending disbelief"; especially for the sake of Star Trek. This show strained even my capacity to set aside common sense.

mnem
I mean seriously... riding the interstellar network of mushrooms with a giant deep-space Tardigrade as your navigator...? Seriously...?!?

mnementh · « **Reply #76234 on:** November 27, 2020, 11:06:12 pm »

Quote from: bd139 on November 27, 2020, 09:02:35 pm

That’s the same iron in saw someone at the local radio club desoldering LPF toroids with. Properly fucked up the board.

BUT it depends on the user not the iron.

1000x this. I would not be afraid to use that gun in that scenario myself; I know that I am the temperature regulator on these and they have a Hi/Lo trigger to help with that.

But only in this kind of situation; where you have massive heat-sink copper fill and you're trying to desolder half a ton of lead from half a ton of copper and/or aluminum tabs. I'd waste lots of solder and lots of flux making sure the tip was over-tinned just right and I could get in & out quick, and I'd have my big Mandingo 25mm bore solder-suckers... both of 'em... primed before I apply the heat.

But that's just how I'd dewitt.

mnem
No dragon flame allowed. NO!!!

med6753 · « **Reply #76235 on:** November 27, 2020, 11:38:42 pm »

Quote from: BU508A on November 27, 2020, 08:59:33 pm

Quote from: med6753 on November 27, 2020, 05:40:17 pm
7603N PSU re-cap, round 2. New set of tools ready to do battle.

What happened about the desoldering station you've asked for some weeks ago?
Honestly, it makes me shivering seeing this soldering gun next to some electronics and pcbs.

I didn't get around to ordering one so I went with the brute force method.

An update, all the caps are removed. The board survived. Just some minor scuffing upper left from the dremel. So everyone can calm down.

Tomorrow install new caps.

tautech · « **Reply #76236 on:** November 27, 2020, 11:47:19 pm »

Nothing else to add.

xrunner · « **Reply #76237 on:** November 28, 2020, 12:02:16 am »

Now those are parts for real men - real men fixing real machines!

Quote from: med6753 on November 27, 2020, 11:38:42 pm

I didn't get around to ordering one so I went with the brute force method.

An update, all the caps are removed. The board survived. Just some minor scuffing upper left from the dremel. So everyone can calm down.

Tomorrow install new caps.

med6753 · « **Reply #76238 on:** November 28, 2020, 12:05:43 am »

The Weller had just to right amount of heat to deal with heat sinking from those caps. And there's no heat damage or lifted board pads. I performed continuity checks especially on the plated thru holes and they are all good. So I should have no issues once the re-cap is done.

I know...famous last words.

tautech · « **Reply #76239 on:** November 28, 2020, 12:20:15 am »

Quote from: xrunner on November 28, 2020, 12:02:16 am

Now those are parts for real men - real men fixing real machines!

Real men would have real soldering irons !

nixiefreqq · « **Reply #76240 on:** November 28, 2020, 01:27:10 am »

like my old mans' iron.

takes about 20 minutes to warm up......but lots and lots of thermal mass.

edit 200 watts.

mnementh · « **Reply #76241 on:** November 28, 2020, 02:03:06 am »

I love you man... but that is EXACTLY the result I feared when you first said "hacksaw".

Before you go to solder in the new ones, I suggest you get your rosin ready, and that you loosen then retighten the nuts at the bottom of the tip on that gun. Will make all the difference in the world in how it works.

Good luck my friend,

mnem
*crosses toes, tail, wings and claws*

med6753 · « **Reply #76242 on:** November 28, 2020, 02:17:45 am »

Quote from: mnementh on November 28, 2020, 02:03:06 am

I love you man... but that is EXACTLY the result I feared when you first said "hacksaw".

Before you go to solder in the new ones, I suggest you get your rosin ready, and that you loosen then retighten the nuts at the bottom of the tip on that gun. Will make all the difference in the world in how it works.

Good luck my friend,

mnem
*crosses toes, tail, wings and claws*

The scuffing of the board is minor and in no way will affect anything.

I'm not using the Weller to solder in the new caps. It's back to the Hakko.

med6753 · « **Reply #76243 on:** November 28, 2020, 10:52:33 am »

And continuing this morning......

Building up the capacitor adapters then installing the replacement capacitors to the adapter. A total of 7 need to be done. Then install on the PSU board.

bd139 · « **Reply #76244 on:** November 28, 2020, 10:53:38 am »

That board is going to look very sparse afterwards.

Brumby · « **Reply #76245 on:** November 28, 2020, 10:58:45 am »

Improving the ventilation is always a good thing.

med6753 · « **Reply #76246 on:** November 28, 2020, 10:58:58 am »

Yep, the replacement caps are about 1/3 the size of the originals.

med6753 · « **Reply #76247 on:** November 28, 2020, 11:00:57 am »

Quote from: Brumby on November 28, 2020, 10:58:45 am

Improving the ventilation is always a good thing.

Some versions of the 7603 have a fan and other versions don't. This military version does not.

bd139 · « **Reply #76248 on:** November 28, 2020, 11:04:36 am »

More room for the fluff to escape when they’re cooked in a few years

med6753 · « **Reply #76249 on:** November 28, 2020, 11:11:11 am »

Quote from: bd139 on November 28, 2020, 11:04:36 am

More room for the fluff to escape when they’re cooked in a few years

True.

I think the deciding factor regarding fan/no fan was if the readout board option was installed.


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Author Topic: Test Equipment Anonymous (TEA) group therapy thread (Read 4072904 times)

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