Re: What retro activity did you get up to today?

Posted on 2017-11-05, 14:56

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've finally troubleshooted my faulty 1541 disk drive. Leds indicated that the logic was working, but motors refused to spin. The 12v line was shorted, but the 7812 was fine. (one of the 2 big metallic transistors on the right) Tried changing and testing some capacitors and diodes near it, on the …

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Re: What retro activity did you get up to today?

Posted on 2017-10-15, 10:25

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tested the PSU Voltage on my C64: 5V DC: 5.07V (passed) 9V AC: 0.63V (failed) Looks like a rebuild is in order (cheaper than buying a we one). I did repair the power supply of the 1541 disk drive clone a couple of years ago.(dc 5 and dc 12 v) I had to forcefully open the plastic case with some …

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2017-10-07, 13:48

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Found this while going through electronics trash at my university: Too bad I don't have a CPU to test it with. The BIOS battery is most likely dead since it's one of those dreaded integrated batteries. I like that motherboard,nice 'rescue'! I'm wondering what's the purpose of those 4 empty plcc …

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2017-10-05, 17:54

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Vaguely hardware related, but still: I was looking in my garage for my 30 year old Duplo toys,decided to to give 'em to my lil'nephew. Well, i found 'em in a really vintage DEC cotton bag, God only knows where my parents got that in the early '80. Maybe my uncle, that was working for Olivetti / SGS …

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Re: I have an idea... Oh boy.

Posted on 2017-09-18, 16:15

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Why are people cloning Adlib cards, what is so special about it? Isn't it just a FM synthesizer? As far as i know, every SB and compatible supports it. well,probably because here where i live 8bit isa sound blaster cards are impossible to obtain. I've never seen one in my entire life, lol Ebay has …

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Re: I have an idea... Oh boy.

Posted on 2017-09-17, 12:19

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

6 done.jpg The board is finally complete , i checked with a multimeter all missing connections and eventual shorts between gnd and vcc (found a couple of missing connections) I've assembled a p2 400 with isa slot for the testbed, a sacrificable board, hoping not to see the magic smoke. I've tested …

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Re: I have an idea... Oh boy.

Posted on 2017-09-17, 12:10

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for inspiring me, i've completed the Adlib clone card,a project that took me many hours of my free time. I've decided to use the Malinov schematics, since it was relatively easy to print the front and the back layer with Kicad and a laser printer.Made 5 or 6 bad attempts in transferring the …

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Re: What retro activity did you get up to today?

Posted on 2017-09-17, 10:48

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice M24, i had one too, i gave it away to an ex Olivetti employee that was putting up an interactive museum of Olivetti pcs here in Italy. had expanded memory and the color monitor I've finally finished my Adlib clone Souncard , using the PCB layout from Malinov site. Good Lord that was really …

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Re: Bought these (retro) hardware today

Posted on 2017-05-28, 12:25

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by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I finally found a 486! Just happened to stop at the recycler today and he had one available...25 Canadian Pesos! Very nice find, i really like it! I agree, replace battery ASAP Maybe you should put a 3.5 inch floppy in the vertical slot , or you can find some bezels (3.5 or 5.25) to cover the holes …

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Re: My collections of Matrox video cards

Posted on 2017-05-16, 21:18

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hahaha oh wow Who doesn't love Matrox cards? I had the Matrox Mystique 220 4 mb back in 1997, the Masked Pierrot printed on the drivers cd was mesmerizing, lol And it is blazing fast in 2d and windows, i had a really expensive philips brilliance 17 inch monitor back then , it was a great combo. Too …

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Re: What retro activity did you get up to today?

Posted on 2017-03-28, 10:55

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

First of all,sorry for my poor english as usual :) Well, yesterday night i was quickly browsing through the forum, and i stumbled upon a post regarding the a600 memory expansion / rtc . The one with the badly damaged board due to a leaked battery. Well i've completely forgotten that my a600 has a …

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Re: Attic find - 286-16, that's right

Posted on 2017-03-26, 20:13

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by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice job so far. I like that clean and tidy case, good as new! All this 286 talk made me remember that i should tinker again with my 286 "laptop"(heh, it's quite the suitcase), it's in really bad shape. Maybe i'll try to service it next week.

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Re: Attic find - 286-16, that's right

Posted on 2017-03-19, 20:52

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Godlike wrote: My eyes start to flash like a rising star. Hahaha oh wow, i know that feeling! Nice find, that 286 has some nice addon cards. That 8 bit isa audio card will also be very useful to you, if you ever find an Ibm pc- xt compatible! (but it's really fit for that 286!)

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2017-03-19, 12:03

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Wow, so it's the voodoo3 3000! Never expected to find it in a p200 machine. Maybe a bit too much for the pentium 200 , but i can swap it for an older voodoo2 and see the difference

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2017-03-18, 22:43

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

First of all sorry for my crappy english! Old shop owner in town had to throw away a couple of pcs, exchanged 'em with parts of a tube amplifier(he's talented at repairing'em) IMG_20170318_150800.jpg He also gave me a couple of monitors, 17 inch acer j17, and that unknown 'Orion' crt Little one is a …

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Re: Bought these (retro) hardware today

Posted on 2017-03-02, 14:07

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

First of all sorry for my bad English. I've bought this Thinkpad 365e for 20 euro,at a local thrift shop ,because i've always wanted a 486 laptop with integrated audio card. IMG_20170302_140207.jpg Well, went back home, the portable pc still had the hdd working and a good working screen, BUT i've …

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Re: What retro activity did you get up to today?

Posted on 2017-02-04, 15:44

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've completed repairs on my Olivetti Pcs 86 (a pretty 'modern' Nec v30 ibm pc clone) mi.jpg Troubleshooted power supply problem. Fuse blew out, checked everything and i did find that the main power transistor (a bu508 if i recall correctly) was shorted. Soldered a spare from an old swiching tv …

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Re: Bought these (retro) hardware today

Posted on 2016-12-18, 01:46

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently bought an Olivetti M24 (AT&T 6300) locally for about $50 US. Came with the original Olivetti M24 monochrome monitor, the 102-key Olivetti keyboard, a Seagate ST-225 20 MB HDD, 360k floppy drive and a full 640KB of RAM Sigh... i envy you. Nice setup! This Olivetti was a really great pc …

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Re: What retro activity did you get up to today?

Posted on 2016-11-29, 18:13

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Started to assemble my 200mmx System today as my AT case arrived. Oh boy how nostalgic, it's the exact same case i had back in 1997 for my p200mmx pc. What a great coincidence. My p200mmx was overclocked to 225 (mostly stable , but sometimes i had problems, since bus was OC at 75 Mhz ) and had a …

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Re: What the heck is this card?

Posted on 2016-10-29, 16:18

by

by mongaccio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

> It has all components a MPU401 card would need. ... No other markings on it? My Midiman MM401 has a DE9 for midi in/out and a single RCA jack for a metronome output, much like your card. Many thanks it's a good start, i'll try finding the 'serial port' pinout now. And no, no brands or markings …

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