Re: What retro hardware you killed today or in the past :(. Killing spree stories+serial killers are welcome.Rest in pie

Posted on Today, 00:56

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just killed 720kB floppy drive from Tandy 1000TL/2 (Sony MP-F11W-72) 😒 -> I killed (or at least killed even more) the FDD in my Tandy 1000TL/2 - questions and replacement needed

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Re: I killed (or at least killed even more) the FDD in my Tandy 1000TL/2 - questions and replacement needed

Posted on Today, 00:55

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you are lucky it is just a fused-open ribbon cable and nothing else. In this case, manually attach a replacement wire could do the job. Well, checking if the burnt wire still conducts was the first thing I did (and it does). Also the stepper motor which doesn't work is controlled through the PCB …

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I killed (or at least killed even more) the FDD in my Tandy 1000TL/2 - questions and replacement needed

Posted on Today, 00:35

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just killed 720kB floppy drive from Tandy 1000TL/2 (Sony MP-F11W-72) while recording #septandy episode for my channel. Drive suddenly stopped working after reboot (no longer read the floppies) and I did the most stupid thing connecting it to a second ribbon cable connector - which Tandy for odd …

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

Posted on 2021-09-16, 20:25

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

First attempt at retrobriting... Being hindered by the great british weather but it seems to be working slowly. https://i.ibb.co/GRFjpYX/retrobrite.png I would detach the acrylic plate before retrobrightning. I ruined one like this - it got some very minor cracks all over it's surface - like a …

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Re: ASUS K7M troubles

Posted on 2021-09-14, 13:27

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Couple of reasons I can think of. One would be cost to the manufacturer for the parts, and possible reliability issues if capacitors fall out during shipping. The other is that you want the leg length to be as short as possible to reduce the inductance in the path from the power supply to ground. …

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Re: ASUS K7M troubles

Posted on 2021-09-14, 13:21

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm asking myself a question for a long time now. Could it be done to use tulip socket to insert caps? Or is something wrong with that. That question came following a thought about having a way to easily replace all components prone to fail on old hardware. I got capacitor who inflate to the point …

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Re: ASUS K7M troubles

Posted on 2021-09-14, 11:47

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you for the explanation @snufkin. MOSFET are part of the VRM. On HanJammer MB, we can see five of them if I'm right. That was what happened on my ASUS CUW-AM, all the area got hot. I wonder if it is possible to detect at least a group of caps with one or more faulty just by identifying the …

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Re: ASUS K7M troubles

Posted on 2021-09-13, 22:47

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What are the capacitance, voltage and diameters of the caps near the CPU slot on this board? There must be some pretty close equivalents. Here: https://drive.google.com/drive/folders/1i2ULjgBJbSUEQEOQcq1p2H_Kn7yk62sJ?usp=sharing I think I bought almost all of the low ESR caps other brands though ( …

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Re: ASUS K7M troubles

Posted on 2021-09-13, 22:30

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

To remove a capacitor as they pass through the motherboard, beware to not damage the gates (the little cylinder that makes the link between the different layers of the motherboard). I recommend using a desoldering gun. Easy and fast. To remove SMD like the voltage regulators, it require more …

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Re: ASUS K7M troubles

Posted on 2021-09-13, 19:32

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My bet is the caps have dried out and will need to be replaced. What happens if you point a fan towards those components that are getting hot? Like I said I havn't tested that yet. My guess is it will help abit... My first guess was replacing all the caps although I would like the board to be as …

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ASUS K7M troubles

Posted on 2021-09-13, 17:52

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have K7M which I owned since it was new. It have all original accessories, box and so on for it. It was bought in ~99 or 2000 and It was used in several machines well upto 2013 I think. And since then it was in storage. Problem is that it's no longer stable now. Well it's stable until it gets hot …

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Re: CRT monitor practices

Posted on 2021-09-13, 08:37

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have definitely seen the trace to the filament bubble and fail full open, usually on large (20”+) Viewsonics, had to jumper wire point to point from the supply to the filament. When I asked my signals and circuits engineering lab teacher he thought it looked like heat damage. That would make me …

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Re: CRT monitor practices

Posted on 2021-09-13, 00:09

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

While filament definitely prefers to stay at the same temperature all the time instead of being turned on and off all over again I never seen a single CRT monitor failing due to the filament getting open. It was always due to the electronics failure (caps and flyback transformer failures were most …

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Re: tweaking Elitegroup UM386 motherboard.

Posted on 2021-09-12, 23:41

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's 4th out of the 5 that everybody talk about, missing is Intels first 2 efforts, AMDs intel clone, Cyrixes 2 earlier ones before the Fasmath... put in ALL the actual 387 clones and it's solidly in the top third. I think CPU Galaxy has the YT video on the topic, he published earlier this year in …

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Re: tweaking Elitegroup UM386 motherboard.

Posted on 2021-09-12, 22:47

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yah IIT, VLSI, Cyrix FasMath, TI are all 80387 equivalents. VLSI is among the faster ones I think. ULSI is pretty much the weakest of the bunch - it's just a bit faster than intel 387. Unless it's ULSI DX/DLC then it which will be mid-range just like IIT (actually it has pretty much the same …

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Re: CRT monitor practices

Posted on 2021-09-12, 22:42

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by HanJammer

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Turning it on and off won't hurt the filament. What generally degrades CRTs (beside obvious user errors) are: 1) poor quality components (capacitors are usual suspect when monitor fails). 2) leaving it on showing the same picture for prolonged periods of time (it will 'burn' the image into the …

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Re: Retro confessions. What are yours?

Posted on 2021-09-12, 20:13

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by HanJammer

in Milliways

in Milliways

OK, now this is a big one... I allowed two Model M keyboards go to the crusher one year ago, because I didn't looked closely enough at the picture my man at the recycler sent me (an he sends very poor quality pictures) - I've just seen two dirty keyboards with 2 buttons missing in one and I said I'm …

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Re: Retro confessions. What are yours?

Posted on 2021-09-09, 11:25

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by HanJammer

in Milliways

in Milliways

That's not a huge mistake, since they were probably priced at about the going rate for a P100, which at 116Mhz they just about matched in FPU, but had integer performance more like a P150. So for the money they were fast. That's why I liked the 6x86 PR166 back in the day too, yeah, it wasn't as …

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Re: Retro confessions. What are yours?

Posted on 2021-09-08, 13:28

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by HanJammer

in Milliways

in Milliways

In my first computer which I actually bought with my own money I chose to have an AMD K5PR-166 and at the time I thought it was fast. Because it was. Plus it was cool not being an intel. Plus now it's even cooler being first and last CPU developed entirely by AMD. I bought K5 PR133 and never looked …

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Re: Retro confessions. What are yours?

Posted on 2021-09-08, 09:05

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by HanJammer

in Milliways

in Milliways

KvynB wrote on 2021-09-08, 05:14: I had a 230W PSU and I undervolted it to 115W intentionally and the pc *boom* it blasted like a Dynamite. I still remember that day. Correct the units before somebody sees it ;P

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