VOGONS


Reply 27600 of 27960, by PC Hoarder Patrol

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BigDave wrote on 2024-05-20, 07:33:
gerry wrote on 2024-05-14, 20:02:
they are the best plugs it seems https://www.youtube.com/watch?v=UEfP1OKKz_Q :) […]
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BigDave wrote on 2024-05-14, 17:15:

In the UK at least, it doesn't help that most plugs sold now, are usually only found with 13amp fuses fitted. I sold consumer electronics in the 80s/90s, initially retail, and back then, most equipment didn't come with a fitted plug, so as part of the sales process we'd also fit the correct fused plug for the customer, if nothing else to stop them blowing themselves up when they got home! I'm always amazed when I've bought vintage equipment from the pre-fitted plug days, at how badly some people wired their plugs (A recent Amstrad computer purchase as an example), so always the first thing I check before getting it anywhere near a socket. Then again, I guess most people were never taught how, and certainly a great many then, and probably now, didn't realise that you could even get fuses other than 13amp.
Ignorance is bliss, except where electricity is concerned, it needs respect.

they are the best plugs it seems
https://www.youtube.com/watch?v=UEfP1OKKz_Q
😀

...OK, I'm done with plugs, promise.... unless anyone remembers those 80's mini 3 pin plug systems made by Masterplug?

You mean the rubber PermaPlug inline connectors 😀 ...if so I certainly do, and still have a few in use scattered around the house - even used them outside on occasions and never had a problem (yet!). Then again, as I displayed an interest from an early age, my late father showed me the proper basics of wiring and all things electrical around the house.

Reply 27602 of 27960, by Shponglefan

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Started building myself a test bench platform out of some plywood. Trying to better optimize space and cable management on my workbench.

I'm going to add some edgebanding and glue down some anti-static mats on it.

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Pentium 4 Multi-OS Build
486 DX4-100 with 6 sound cards
486 DX-33 with 5 sound cards

Reply 27603 of 27960, by Tiido

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That looks very nice ! This is something I should try to do also ~

T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜

Reply 27604 of 27960, by PcBytes

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Was bored... and thus this "abomination" was born.

AMD K6-2+ 500MHz, TNT2 M64, 160GB on Promise Ultra100 TX2, 36GB on Adaptec SCSI, 256MB RAM, Luckytech P5MVP3 mobo.

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"Enter at your own peril, past the bolted door..."
Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB

Reply 27605 of 27960, by BigDave

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I decided to give my 'daily driver / workhorse' HP Elite 8100 i5 SFF PC a late spring clean inside and out, and replaced the back up slave drive with a newer WD 500GB Sata HDD. It's getting on a bit now, I think this is from 2011, but I do this every year, to keep everything in tip top condition, and works as good as new. We service our cars each year, why not our PCs? afterall the fans and cooling system are not going to be very effective if they're covered in dust. This is mostly my business PC, so setup with office and image stuff, but also has my DAW setup which I haven't used since moving. With all the recent sunshine, I'm also getting on with some retrobrighting. Besides the UV rays from the sun, I use a paint brush to apply an even coat of Jerome Russell peroxide hair cream, wrap in cling film, and put out in the sun for the day! rinse everything, and buff.

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Reply 27606 of 27960, by BigDave

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PC Hoarder Patrol wrote on 2024-05-20, 08:16:
BigDave wrote on 2024-05-20, 07:33:
gerry wrote on 2024-05-14, 20:02:

they are the best plugs it seems
https://www.youtube.com/watch?v=UEfP1OKKz_Q
😀

...OK, I'm done with plugs, promise.... unless anyone remembers those 80's mini 3 pin plug systems made by Masterplug?

You mean the rubber PermaPlug inline connectors 😀 ...if so I certainly do, and still have a few in use scattered around the house - even used them outside on occasions and never had a problem (yet!). Then again, as I displayed an interest from an early age, my late father showed me the proper basics of wiring and all things electrical around the house.

Not quite, although I do remember using those, but so nice to hear about how your father taught you all about the basics of the home electrical system, and passed on his practical skills, which I bet has proved invaluable.

I found a picture of what I was thinking of in a trusty 1988 - 89 Argos catalogue (PDF collection) and it's items 10 and 11 on this page, although I think the design varied over the years.

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Reply 27608 of 27960, by appiah4

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Shponglefan wrote on 2024-05-20, 16:50:

Started building myself a test bench platform out of some plywood. Trying to better optimize space and cable management on my workbench.

I'm going to add some edgebanding and glue down some anti-static mats on it.

Oh wow. This.. I need this!

Retronautics: A digital gallery of my retro computers, hardware and projects.

Reply 27609 of 27960, by Ozzuneoj

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PcBytes wrote on 2024-05-20, 19:53:

Was bored... and thus this "abomination" was born.

AMD K6-2+ 500MHz, TNT2 M64, 160GB on Promise Ultra100 TX2, 36GB on Adaptec SCSI, 256MB RAM, Luckytech P5MVP3 mobo.

Nice couchputer! I especially love the bluetooth soundcard.

(seriously though, that's an interesting combination of parts... that would have been an absolutely ridiculous amount of high speed storage for a K6-2 system back in the day! 😁 )

Now for some blitting from the back buffer.

Reply 27610 of 27960, by konc

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Ozzuneoj wrote on 2024-05-21, 07:14:

Nice couchputer! I especially love the bluetooth soundcard.

I admit going back to the photo to look for the "bluetooth soundcard"...

Reply 27611 of 27960, by PD2JK

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ChrisK wrote on 2024-05-18, 20:38:
PD2JK wrote on 2024-05-17, 14:26:
ChrisK wrote on 2024-05-17, 06:06:
Could have been a small inductor. Peel of some of the black case material and there should be some wound wires visible ("wire wo […]
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Could have been a small inductor. Peel of some of the black case material and there should be some wound wires visible ("wire wound chip inductor"). You'll likely need some good magnification.
Looking at the datasheet of the spindle driver there's no other component beween Pin 12 and Cp, but according the packaging / footprint I'd strongly suspect it to be an inductor .
Try measuring the resistance above it. If it's open/high resistive remove and bridge it. That should make it work again if there's no other problem.

That circuit is a charge pump for generating a higher-than-Vcc voltage to drive the high side switches of the motor drivers.

I will look into it if I have the time. Thanks!

You're welcome. Let us know how it goes.

Alright, so I simply bridged the soldering pads, but the drive won't spin. Then I soldered a 4.7uF cap in its place and the drive slowly spins up.
After a few seconds you'd expect a moving actuator for initialization of the heads and so on, but the drive spins down a bit and tries two more times. Maybe the heads/actuator is stuck in its position.
Not sure if the drive motor reaches full speed either.
I looked up some YouTube videos of the WDAC280 drive, and those are spinning up a quite faster.

And a picture of the burned component: (now replaced with a 4.7uF capacitor)

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i386 16 ⇒ i486 DX4 100 ⇒ Pentium MMX 200 ⇒ Athlon Orion 700 | TB 1000 ⇒ AthlonXP 1700+ ⇒ Opteron 165 ⇒ Dual Opteron 856

Reply 27612 of 27960, by H3nrik V!

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Just trying to build a P233MMX for some kicks and giggles as a Voodoo rig for a retro party.

Still not sure if 95OSR2.1 is the right choice over W98SE, albeit probably more period correct?

20gig Deathstar, with 2 2gig partitions for cd copies, I can't handle installing from a dodgy disk in an old dodgy drive 🤣

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Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀

Reply 27613 of 27960, by H3nrik V!

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And just because I've had tons of problems with old dodgy spinning rust as well, I'm giving the old Deathstar the full treatment first

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Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀

Reply 27614 of 27960, by pan069

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I recently found a couple of NOS 486 cpu coolers with screw on fan (instead of clipped-on/moulded fans). I found one of these a few years ago and they are very moddable with Nocuta fans.

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Reply 27615 of 27960, by gerry

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pan069 wrote on 2024-05-21, 21:52:

I recently found a couple of NOS 486 cpu coolers with screw on fan (instead of clipped-on/moulded fans). I found one of these a few years ago and they are very moddable with Nocuta fans.

PXL_20240521_102351245.jpg

that's a nice find, especially being NOS - hopefully quiet and stable

Reply 27616 of 27960, by ChrisK

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PD2JK wrote on 2024-05-21, 13:03:
Alright, so I simply bridged the soldering pads, but the drive won't spin. Then I soldered a 4.7uF cap in its place and the driv […]
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ChrisK wrote on 2024-05-18, 20:38:
PD2JK wrote on 2024-05-17, 14:26:

I will look into it if I have the time. Thanks!

You're welcome. Let us know how it goes.

Alright, so I simply bridged the soldering pads, but the drive won't spin. Then I soldered a 4.7uF cap in its place and the drive slowly spins up.
After a few seconds you'd expect a moving actuator for initialization of the heads and so on, but the drive spins down a bit and tries two more times. Maybe the heads/actuator is stuck in its position.
Not sure if the drive motor reaches full speed either.
I looked up some YouTube videos of the WDAC280 drive, and those are spinning up a quite faster.

And a picture of the burned component: (now replaced with a 4.7uF capacitor)
DSC_9143.JPG

OK, had a more detailed look into the datasheet and it seems you are right. The damaged part really could've been a cap (cap C3 in the datasheet p.7 Fig. 3, to be exact). The remains of the part in your newer picture also seems to confirm that. I previously identified the big yellow one as the bulk cap of the charge pump (Cp as shown in the datasheet's block diagramm).
So it seems there's more than just that blown cap. Did the drive work properly just before?

RetroPC: K6-III+/400ATZ @6x83@1.7V / CT-5SIM / 2x 64M SDR / 40G HDD / RIVA TNT / V2 SLI / CT4520
ModernPC: Phenom II 910e @ 3GHz / ALiveDual-eSATA2 / 4x 2GB DDR-II / 512G SSD / 750G HDD / RX470

Reply 27618 of 27960, by BitWrangler

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Mostly you'll just get distortion, the fist sized ones were only a real half to two watts in the first place. Maybe maladvertised at 10W PMPO. However, some of them do a bit better if you supply them with 9V instead of 6V or 12V instead of 9V, but it's a 50:50 shot whether it's magic fix or magic smoke.

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.

Reply 27619 of 27960, by PD2JK

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ChrisK wrote on 2024-05-22, 14:26:
PD2JK wrote on 2024-05-21, 13:03:
Alright, so I simply bridged the soldering pads, but the drive won't spin. Then I soldered a 4.7uF cap in its place and the driv […]
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ChrisK wrote on 2024-05-18, 20:38:

You're welcome. Let us know how it goes.

Alright, so I simply bridged the soldering pads, but the drive won't spin. Then I soldered a 4.7uF cap in its place and the drive slowly spins up.
After a few seconds you'd expect a moving actuator for initialization of the heads and so on, but the drive spins down a bit and tries two more times. Maybe the heads/actuator is stuck in its position.
Not sure if the drive motor reaches full speed either.
I looked up some YouTube videos of the WDAC280 drive, and those are spinning up a quite faster.

And a picture of the burned component: (now replaced with a 4.7uF capacitor)
DSC_9143.JPG

OK, had a more detailed look into the datasheet and it seems you are right. The damaged part really could've been a cap (cap C3 in the datasheet p.7 Fig. 3, to be exact). The remains of the part in your newer picture also seems to confirm that. I previously identified the big yellow one as the bulk cap of the charge pump (Cp as shown in the datasheet's block diagramm).
So it seems there's more than just that blown cap. Did the drive work properly just before?

Unfortunately that is unknown. The machine the disk was in was from some shed/storage, so I guess it wasn't powered on for ages.
Guess I'll have to power it on and off quite a few times and maybe then I'm lucky and gets unstuck.
Would the freezer help or is that an urban legend.

i386 16 ⇒ i486 DX4 100 ⇒ Pentium MMX 200 ⇒ Athlon Orion 700 | TB 1000 ⇒ AthlonXP 1700+ ⇒ Opteron 165 ⇒ Dual Opteron 856