Re: I believe I broke my Socket 7 motherboard, advice needed

Posted on 2021-06-07, 17:06

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I made pictures of both the RAM sockets and the modules. I inserted the modules into the two slots closest to the IDE interface yesterday. I just checked the board's schematics and those slots are Bank 1.

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Re: I believe I broke my Socket 7 motherboard, advice needed

Posted on 2021-06-07, 14:12

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The 72-pin simm module has a cut-out on one side. The module slot has a locking key on the same side to prevent the module from being installed incorrectly. It may be possible to install the module in reverse, but certainly not easily and without the use of light violence. Maybe you really didn't …

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Re: I believe I broke my Socket 7 motherboard, advice needed

Posted on 2021-06-07, 13:24

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If it "fit" without forcing it can't have been the wrong way around, you probably did not install them properly, ie. they are not making good contact. Thanks for the insight, but I am quite sure that I inserted at least 1 module in both directions, i.e. including backwards. Like I said, I didn't …

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Re: I believe I broke my Socket 7 motherboard, advice needed

Posted on 2021-06-07, 12:28

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't think you can put a 72pin SIMM the wrong way around When the motherboard wouldn't boot after I had set the cpu speed to 150mhz, I turned off the system, removed and then reseated all the components. I turned the system back on; there was no display and it immediately started producing long …

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I believe I broke my Socket 7 motherboard, advice needed

Posted on 2021-06-07, 10:19

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am the creator of the following topics: this one , this one and this one . All of these topics are about the same Socket 7 motherboard. I wanted to increase the speed of the cpu (Pentium 1) yesterday, but it would only go as high as 133Mhz. When I tried 150Mhz, the system wouldn't boot any longer. …

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Re: Need help to set up Chaintech motherboard 2A59CC3A

Posted on 2021-06-06, 17:07

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I believe I inserted one or both of my RAM sticks backwards. I just realized that might be what causes the fact the system is not booting anymore. Is that possible?

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Re: Need help to set up Chaintech motherboard 2A59CC3A

Posted on 2021-06-06, 16:47

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I looked at my previous topics again and, apparently, the motherboard was incorrectly identified in the first one . It's not the 5IEM2.2, but the 5IEM0.1: see this link and this one When I instructed the flash utility to update the BIOS, the following error was displayed: "erase chip fail". I later …

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Re: Need help to set up Chaintech motherboard 2A59CC3A

Posted on 2021-06-06, 10:33

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

2: Get a Dallas chip with good internal battery The RTC I bought on Ebay almost two weeks ago from someone in the UK is, in fact, labeled Dallas. It's charged, as the BIOS stores the date and time after rebooting or shutting down (contrary to the original RTC on the board and the one I bought on …

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Need help to set up Chaintech motherboard 2A59CC3A

Posted on 2021-06-05, 21:12

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am the same person who opened this topic and this one . The original RTC and the one I bought from someone in China had a flat battery. I don't know how to solder, so I bought another RTC. Again on eBay, but from someone in the UK instead of China. The auction had a picture of an RTC labeled " …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-17, 22:03

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

While connecting my 80-wire cable to the hard drive I again bent one or more pins in the drive's IDE interface. I got one of them straight again, but another pin broke off. According to the schematics on this page , the pin that broke off is '40 Ground'. I connected the hard drive to my normal PC …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 23:04

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I will try another 80-wire cable. The end connector of the one I used earlier this night got stuck inside the hard drive's IDE interface. The cable itself got loose and the connector remained inside the drive --I had to pry it out of there. Come to think of it, that might have been when I bent some …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 21:51

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Always best to use the cdrom on the secondary interface. After trying numerous combinations, I ended up connecting both drives to the secondary interface. I will connect the hard drive and the optical drive through separate cables: the hard drive to the primary IDE interface; the optical drive to …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 21:29

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Would you like to take a good photo for our database here please ? http://www.win3x.org/uh19/motherboard/show/1223 (the one on the other thread has a pretty bad looking glare). Who can upload the photos I took to the archives? Has it already been done? RTC stand for Real Time Clock... it is the …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 16:35

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yes. modding it with an external battery is easy enough. I am completely incapable of anything that requires soldering skills. How can the RTC be dead? The system sat unused in a cabinet for more than 4 years. I remember buying it from a Chinese seller. I read today that Chinese sellers of this …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 16:07

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

We have a visual!!! The system is POSTing! For the first time in more than 4 years. And after two days of tinkering. It still throws an error regarding the CMOS battery. I inserted the Dallas RTC I bought online in 2016. Do you think this chip's battery is dead too?

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 15:53

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Black in the middle: Thanks. Where does the cable labeled as "Turbo Switch" go? The schematics for my motherboard (https://th99.bl4ckb0x.de/m/C-D/33825.htm) mention only a "Turbo LED" connector, no "Turbo Switch". EDIT Yeah, and your board probably doesn't have a turbo header. It was common at the …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 14:33

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I forgot to take note how these 2 6-pin ATX cables were connected. Which cable goes on the top connector? And which one on the other? EDIT. According to what I read during some research, the black wires should be in the center. Is that correct?

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 13:10

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I put the motherboard back inside the case. I'm about to connect the FP Header cables the way they used to be on the board. There is one cable (Turbo Switch, the blue/black/white cable) which I don't know which pins it should be connected to.

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-16, 10:05

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The RTC you've put looks faked to me. If you rub a Q-tip with some alcohol on it I'm sure you'll start to see the q-tip turn dark and the writings will disappear. Dallas DS1287A.jpg: The RTC I bought in 2016. I took the picture after rubbing the top of the chip with some tissue paper with some …

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Re: Pentium 1 system doesn't POST, replaced RTC

Posted on 2021-05-15, 23:01

by

by Odiseo

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I don't think so, I think you can get a new one from mouser. I just visited their website. The range of variety in brand names and model numbers is enormous. I looked around, but I can't find the RTC (Benchmarq bq3287AMT) that used to be on the board nor the one (Dallas DS1287A) I bought in 2016. …

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