Can anyone explain what these are?

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Can anyone explain what these are?

Postby Iris030380 » 2019-7-11 @ 19:59

I gather they are CPU socket "risers" but what are they for? Where do the connect to? Are they useful to anyone?

Found a lot of them in a massive box of old CPU's, as well as some other weird stuff...

Any help appreciated!

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Re: Can anyone explain what these are?

Postby derSammler » 2019-7-11 @ 20:02

Socket 370 to Slot 1 adapters.
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Re: Can anyone explain what these are?

Postby Iris030380 » 2019-7-11 @ 20:13

OMG I didn't even know I had these until this afternoon. I should open boxes more often.

Problem is my friend used to feed me boxes of vintage / retro parts from his computer shop and after a while I just started putting them in the wardrobe. I mainly collected GPU's but somehow ended up with so much more...

Thanks derSammler
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Re: Can anyone explain what these are?

Postby user33331 » 2019-7-12 @ 05:05

Sad thing is there are only a few Pentium II\III slot-1(or 370) motherboards which are in fully working condition.
- I have many motherboards but all have exploded capacitors. Good luck in changing 20+pcs of caps :depressed:
- I then bought a "restored" socket A motherboard online and even it had at least 1pc of cap replaced.
- Soon those slot-1 adapters will be pretty much useless.
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Re: Can anyone explain what these are?

Postby treeman » 2019-7-12 @ 05:47

20 capacitors.... maybye 30 minutes work
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Re: Can anyone explain what these are?

Postby user33331 » 2019-7-12 @ 06:40

That would be a dream but nobody offers here a cap fixing service in Finland.
- Back in the 1980-90s maybe but all those electronic repair shops bankrupted or ended their business in the 2000s. ( Thanks to modern unrepairable disposable electronic designs.)
- I bet they would charge around 100+euros for replacing all 24pcs caps in a Abit P3 motherboard even if I have bought all the new caps myself.
Last edited by user33331 on 2019-7-12 @ 06:51, edited 1 time in total.
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Re: Can anyone explain what these are?

Postby treeman » 2019-7-12 @ 06:49

well I can't comment on Finland.... in Australia there is always places that do soldering work on all types of electronics tv, computer, mobile phones etc its a matter looking in the right place and its something that is still quiet in demand. As for the price I guess you pay good money for labour on any non general skill.

Having said that electrolytic capacitor replacement is not a very difficult skill to master, still quiet alot of p3/p4 motherboards around and still cheap compared to 386/486 boards which are now slowly drying up

Also I believe the converters are called slotket I still got my original with a pentium 933 socket 370 cpu which I had running at 1.1 ghz years ago
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Re: Can anyone explain what these are?

Postby user33331 » 2019-7-12 @ 06:53

I have a 386 motherboard from 1990 and it has zero=0 capacitors.
Working 100% original and no fixes made. So no worry about caps drying or leaking.
Wondering what breaks in 386 if not leaking cmos batteries or caps ?
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Re: Can anyone explain what these are?

Postby treeman » 2019-7-12 @ 07:00

it probably does have capacitors just different type, there is many types. You probably just associate the look of a electrolytic capacitor, but there is tantalum the round yellow balloon looking shapes and smd capacitors which are the small square chips.

Everything degrades with time unfortunately, I find on 386/486 boards alot of the solder joints crack or go bad or the traces crack somwhere internally from the board being flexed 1 too many times over the years
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Re: Can anyone explain what these are?

Postby Murugan » 2019-7-12 @ 07:03

I agree. I have 2 identical 386 PC's, no electrolytic caps, but SMD tantalums and some popped. Also one board has issues when I tighten the screws all the way down so probably cracked/bad solder.
My retro collection: too much...
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Re: Can anyone explain what these are?

Postby user33331 » 2019-7-12 @ 07:05

Yep no "cylinder"-styled caps. Probably those tiny smd capacitors.
- Interesting thing is it has worked for 30 years in 2020 which is the longest living PC I have owned ( and no fixings done to it.)
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Re: Can anyone explain what these are?

Postby Murugan » 2019-7-12 @ 07:07

Praise yourself lucky :)
My retro collection: too much...
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Re: Can anyone explain what these are?

Postby konc » 2019-7-12 @ 07:08

user33331 wrote:I have a 386 motherboard from 1990 and it has zero=0 capacitors.

I'm pretty sure it has a lot of fireworks, just not electrolytic capacitors.
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Re: Can anyone explain what these are?

Postby treeman » 2019-7-12 @ 07:11

haha wear safety glasses if working with a open case
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Re: Can anyone explain what these are?

Postby an81 » 2019-7-12 @ 07:12

treeman wrote:20 capacitors.... maybye 30 minutes work


you must be kidding
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Re: Can anyone explain what these are?

Postby user33331 » 2019-7-12 @ 07:15

Funny thing is that even 1989 Nintendo Gameboys still work.
Those Japan made caps are excellent.
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Re: Can anyone explain what these are?

Postby derSammler » 2019-7-12 @ 08:08

user33331 wrote:- I have many motherboards but all have exploded capacitors. Good luck in changing 20+pcs of caps :depressed:

Apart from the fact that replacing 20 caps is easy and takes maybe one hour (did 30+ in less), it has nothing to do with Slot 1 / S370 mainboards. Back then, there were bad caps produced that ended up almost everywhere. See https://en.wikipedia.org/wiki/Capacitor_plague
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Re: Can anyone explain what these are?

Postby Deksor » 2019-7-12 @ 08:09

So far I've only had one slot 1 mobo with bad caps, and it was an easy fix, I just took the caps from another dead board and I transplanted them to the slot 1. It's not in my possession anymore, but I know it still works. Fixing caps is super easy. I'm more concerned by these leaky batteries that are slowly eating our 286/386 and 486s. Old caps are annoying but can often be fixed. Battery leakage, not always ... And when it's fixable it's often time consuming.
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Re: Can anyone explain what these are?

Postby Iris030380 » 2019-7-13 @ 19:53

Hi guys. If they are of use to anyone please let me know. I don't know if they work but they look to be in perfect condition, front and back. I'm deep in the process of offloading all my retro parts save a handful of beloved projects. I have some other strange and wonderful looking things so as I find em I'll be asking more identify questions, most likely!
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Re: Can anyone explain what these are?

Postby SETBLASTER » 2019-7-14 @ 00:51

those are slockets

to use socket370 cpus on slot1 motherboards
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