Re: Electronics repair area basics ?

Posted on 2018-12-26, 23:14

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Multimeters - almost everything from UNI-T is very decent for the price. I work in the scientific institute and this brand was recommended to me by tech guys as being very precise even for the scientific purposes. I have UT61E and it's the best multimeter I used so far, although I recommend …

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Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2018-12-24, 23:35

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have hot air rework station and I guess I can remove the controller and install socket for new controller instead. Sourcing the proper KBC is other thing though… I have two mobos (286 OCTEK FOX II with AMI KBC) and some other 386 mobo with JetKey KBC. Still I'm not sure if it's required for the …

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Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2018-12-24, 12:05

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Do you have any way to verify that your keyboard works? Yeah, I have pleny other motherboards and computers I use it with on a daily basis. Is this what you have? http://www.btc.com.tw/pdf/5140.pd https://deskthority.net/wiki/BTC_51_series I don't see an AT/PS2 switch anywhere, so I'm not sure what …

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Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2018-12-24, 00:03

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I know this will sound weird but use a different keyboard the a20 gate handler chip is in the keyboard (you could also try changing fast a20 gate in the bios) edit: didnt read the last post Well I can't change anything in the BIOS because it never shows the setup prompt nor the keyboard is working. …

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Re: Suntac 80286 Mainboards

Posted on 2018-12-24, 00:00

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Beautiful collection. Thanks for sharing. I have one Suntac based mobo as well. Still works like charm. I don't quite remember how I got it, but it was many years ago. In fact it's my only working 286 mobo right now, because it seems I have bad luck buying them - last one I bought had minor battery …

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Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2018-12-23, 22:50

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I inspected the motherboard carefully and I don't see ANY mechanical dammage, not a single scratch. Soldering points are all shiny too. When I bought it few months ago it already had the blue barrel of cancer removed so it never had any chemical dammage as well. There is just a light dust, but …

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Re: MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2018-12-23, 21:15

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the replies. I will check this out.

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MAT286 problems / won't start / Gate A20 error - please help with diagnosis

Posted on 2018-12-23, 02:28

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some time ago, I bought this MAT286 Rev.D motherboard. It has 286 16MHz Siemens CPU and HT12/A chipset. https://imgur.com/a/fIJPSyL https://stason.org/TULARC/pc/motherboards/U/UNIDENTIFIED-286-MAT-286.html Problems: it won't start at all most of the time, shows only 04 POST code on this cheapo …

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Re: Bought this AWE64 Gold thing...

Posted on 2018-08-30, 10:20

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by HanJammer

in Marvin \ Sound

in Marvin \ Sound

Yeah, I refered to CD Audio connector. For DOS games I have a bunch of other Creative cards - AWE32, three AWE64s Value, SB16 Value and MT-32. Sadly none of them is 100% Legacy ISA, still SB16 works fine in my 286. I've always been curious about the "Gold" edition I know It has 4MB of memory …

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Bought this AWE64 Gold thing...

Posted on 2018-08-30, 00:50

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by HanJammer

in Marvin \ Sound

in Marvin \ Sound

So I bought this AWE64 Gold card for very reasonable price at local auctions (paid ~35 USD in Polish money) - only the card, no manuals, box etc unfortunatelly… Guy sold it as unknown/not working condition, but it works perfectly fine in my junky 486 and passes all the tests without problems… It is …

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Re: Broken Creative Labs 3D Blaster Voodoo2 - deal or ripoff?

Posted on 2018-08-30, 00:44

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've repaired conditions very similar to this. I just use a needle point tip for my soldering iron and thin solder. I used a scalpel to straighten the pins. A greater concern might be if someone left this cared powered up with pins shorting out. Possible damage to the internals of the chip? I …

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Re: What brand / computer company used this logo?

Posted on 2018-08-29, 11:49

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.trademarkia.com/kt-technology-74459175.html

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Re: What brand / computer company used this logo?

Posted on 2018-08-29, 11:43

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So the problem is solved thanks to guys at 3dfx.pl! 😁 http://ru.pc-history.com/kt-technology-pc-286-12s.html It was KT Technology - I had exactly the same PC AT model as on the photos.

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Broken Creative Labs 3D Blaster Voodoo2 - deal or ripoff?

Posted on 2018-08-29, 00:19

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So… I bought this Voodoo 2 card - Creative Labs 3D Blaster Voodoo 2 (CT-6670) on auction… I payed around 20 USD (in Polish money)… I knew it has this defect and general condition is unknown (still is, beside this defect). https://imgur.com/a/7KeDs8k As you can see in the picture above few of the …

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Re: What brand / computer company used this logo?

Posted on 2018-08-29, 00:12

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm in Poland, but in late 80s/early 90s all PCs were here imported here from Western Europe... but for example Escom wasn't really that popular (and big American brands like Dell, Compaq or IBM were not common as well) instead more exotic brands were common. It could be an OEM builder but I doubt …

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Re: What is a good 486-dx4 era appropriate Hard Drive?

Posted on 2018-08-28, 19:28

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

For 1995 the most appropriate HDD will be 420, 540 or 850MB harddrive. Like Western Digital Caviar, Conner or Seagate Medalist. 850MB were most popular in 95-96 for 486s and Pentiums, 97 seeing the advent of 1,2 and 1,6 GB drives in cheaper computers.

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Re: What brand / computer company used this logo?

Posted on 2018-08-28, 19:21

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nope… it was gray circle… not square… also I doubt they ever built PCs... I think it was rather long name for the company… something like Leading Edge (but of course it wasn't Leading Edge - just something that looked similar).

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What brand / computer company used this logo?

Posted on 2018-08-28, 16:06

by

by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In the early 90s I had a PC AT (286 20Mhz, 2 MB RAM) which had this logo on the sticker, and most of the parts inside… It was very interesing config, solid build PC... Unfortunatelly I no longer remember what company produced it, so I can't even start collecting parts to rebuild this PC (and I would …

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Re: Suntac 286P

Posted on 2018-08-21, 15:20

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I hope nobody has anything against reviving this old thread… I have the same motherboard… Stojke, have you managed to build something with these motherboards? Answering to your questions (probably you already know most of the answers anyway): 1. YES! Even some of the pretty advanced games up to ~ …

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