Re: Configuring case display on a 386

Posted on 2018-11-20, 03:00

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

the turbo display is configured manually with the pins. U set a display for button pressed and depressed. there is 3 pins on the back of the led display. middle is most likely ground so when the switch is on pin1 + ground is turned on when the switch is off pin 3 and ground is on this switches …

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Re: Power Issue with Socket 7 Motherboard in an AT case

Posted on 2018-11-07, 09:17

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

can't see the side of the socket but it looks like u need to insert something into that silver housing going down the socket and pull it outwards so it clips off the socket. I use a small screw driver but if it slips... yeah. Also I would inspect the motherboard again top and bottom in good light …

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Re: Power Issue with Socket 7 Motherboard in an AT case

Posted on 2018-11-06, 08:05

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

To get 5v you will need to splice 2 cables from the molex and connect positive to the 5v pin on the back of the led panel and ground to ground https://i.imgur.com/QuPH2CY.png Can't really contribute anything else on top what has been said about the board but not having the keyboard leds flash when …

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Re: advice on sound cards opti med3931 vs vibra 16 both isa

Posted on 2018-11-03, 00:14

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

great! I think we have a winner then. its going in my 5x86 amd system which is dos only so good match. I'll put it see what happens but most likely will need the -5v adapter

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Re: advice on sound cards opti med3931 vs vibra 16 both isa

Posted on 2018-11-02, 22:21

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

actually while we are on the topic I pulled out the isa card I. recently lost functionality on my 386 system when switched over to atx as well. Its a vibra 16 too! and yes I just did notice some rusting in a few places so will clean it. so perhaps this will give the previous 2 cards a better run for …

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Re: advice on sound cards opti med3931 vs vibra 16 both isa

Posted on 2018-11-02, 22:11

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yes I actually found the adapter link from a post you did a year ago cyclone3d so thanx for that! Yeah you guys are right all I did is check if there is a 5th pin on the isa slot looking from the back. I have another similar card that had issues with a atx converted and the 5th pin was present but …

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Re: advice on sound cards opti med3931 vs vibra 16 both isa

Posted on 2018-11-02, 21:21

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

thank you very good answer, something I was kind of expecting as there is never a straight forward choice but it confirms me hunch, keeping the vibra 16 I think is the way to go for me. Doing it the hard way usually gives a better reward. Time to order or try make a -5V converter

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advice on sound cards opti med3931 vs vibra 16 both isa

Posted on 2018-11-02, 12:53

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

so the situation looks like this, I am currently using the vibra 16 isa in my 486/586 system. I am upgrading the AT psu to a ATX using a standard converter. However the vibra 16 uses -5v (there is a 5th pin on the back from the end) So in my parts collection I found the opti which doesn't have the …

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Re: Soldering motherboard capacitors ?

Posted on 2018-11-02, 05:08

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by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

well whatever works for you I guess, I usually watch YouTube videos on different techniques to see how its generally done. I always use some iso alcohol to clean off flux, no clean flux too as it still leaves residue

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Re: Soldering motherboard capacitors ?

Posted on 2018-11-02, 04:51

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

what you are doing is probably a technique better used for smd where u can't physically touch the pads because the capacitor or chip is on top so the flux is applied manually. for through hole and bigger things I find it the easiest to apply some heat with the tip to the area you are soldering and …

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Re: My New AT Power Supply killed my surge protector

Posted on 2018-10-30, 21:01

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't trust power supplies over 10 years old. The AT era ones are just too risky to the increasingly rare parts inside, and to general system stability. I use modern supplies with a connector adapter, and that gives me much better voltage quality, short circuit protection, and a quieter fan. It …

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Re: not sure which way to install a fpu on a 386 board

Posted on 2018-10-29, 08:27

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ohh yeah i see the slant/bend now. I was looking on the outside totally missed the inside. thanks!!

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not sure which way to install a fpu on a 386 board

Posted on 2018-10-29, 08:05

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a SARC 386 M326 V5.2 RC4018A4 and I am not sure which orientation to put the fpu in. I put it in the same orientation as the cpu and the system wouldn't boot, the psu wouldn't spin. then I realised I didn't set any pins but decided better not to keep trying without being sure what way it goes …

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Re: Forgot name for a vertical shooting game

Posted on 2018-10-28, 01:22

by

by treeman

in Milliways

in Milliways

there was so many but overkill used to be one of my favourites

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Re: Did I screw up my board?

Posted on 2018-10-25, 21:02

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

at least you know the battery didn't break anything. I think alot of old boards go like this. I have another 486 board that also needs flexing around the cpu area. With that board when I hold it and look from the side I can see its slightly bent, maybye was screwed in too hard or perhaps it warped …

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Re: 386 3.6v Battery distance from board

Posted on 2018-10-25, 20:51

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

looks good, that looks definitely like a safe length :) I was looking at your original picture and two of the traces going from the keyboard connector right past c11 look pretty corroded you may have to jump wire around it if the acid got too deep to clean. As for the isa its hard to say it could be …

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Re: 386 3.6v Battery distance from board

Posted on 2018-10-25, 07:36

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I used one of these cleaning little rugs that come with sunglasses along with a long plastic spulger tool for hard to reach places, can wrap the wipe around the spulger and use it to wipe, nothing fancy or professional but works for me https://images-na.ssl-images-amazon.com/images/I/41rtsiQOizL._AC …

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Re: 386 3.6v Battery distance from board

Posted on 2018-10-25, 07:06

by

by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yeah I have done this on my 486 board, didn't use any special wire just normal kind of wire. have look in this thread page 2 https://www.vogons.org/viewtopic.php?f=46&t=61310&start=20 I didn't do anything special at all, soldered battery to wires and sticky tape battery to back of the case away from …

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Re: Did I screw up my board?

Posted on 2018-10-24, 05:42

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by treeman

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

this sounds kind of familiar to a 486 board I was trying to fix weeks ago. Maybye not related but I would get the full memory detected, but need to save bios settings as it would say cmos was rest. after successfully setting cmos system would reboot and show less ram by about 700kb then give memory …

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Re: Bad movies and horrible films

Posted on 2018-10-16, 03:20

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by treeman

in Milliways

in Milliways

Anybody know the names of any of those old post-apocalyptic movies that they always had those crazy looking vehicles in them (armor, spikes, guns put together in a really irrational way)? Usually a desert-ish setting with different people fighting for control of whatever. It may not belong on this …

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