Tag Archives: DECstation 5000

Repair Progress on the H7826 Power Supply

Posted on November 5, 2017 by rjarratt

I have been working on the H7826 power supply that came in the TURBOchannel Extender of my DECstation 5000/240. Normally, after a visual inspection, I will just apply power to see if a PSU works. This one, though, was not … Continue reading →

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Corroded H7826 Power Supply

Posted on October 23, 2017 by rjarratt

Now that I have got the DECstation 5000/240 working again it is time to move on to the TURBOchannel Extender that came with it. This is in a terrible state, with lots of corrosion all over the place. The worst … Continue reading →

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DECstation 5000/240 Running Ultrix

Posted on October 13, 2017 by rjarratt

Having recently fixed the DECstation 5000/240 PSU, I wanted to see that the machine actually runs properly and can run an operating system. I had previously had another DECstation 5000/240, which I had swapped for something else, but I had kept the … Continue reading →

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DECstation 5000 Model 240 PSU Fixed

Posted on October 1, 2017 by rjarratt

I have finally fixed the H7878 PSU from my DECstation 5000 Model 240. When I last posted about it, the PSU was not working very well, it was unable to sustain any load. Following that post I asked for suggestions … Continue reading →

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DECstation 5000 Model 240 H7878 Power Supply Failure

Posted on August 27, 2017 by rjarratt

When I first got the DECstation 5000 Model 240 I noticed that it would power off after a period of operation. This suggested a problem with the H7878 power supply. I had already inspected it for any obviously leaky capacitors … Continue reading →

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DECstation 5000/240 Progress

Posted on July 19, 2017 by rjarratt

I have made a lot of progress in getting my newly acquired DECstation 5000/240 going again. Before doing anything I took it apart and opened up the power supply to inspect the electrolytic capacitors. They all looked fine. I then … Continue reading →

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DECstation 5000/240

Posted on July 15, 2017 by rjarratt

My latest acquisition. A DECstation 5000/240 with a TURBOchannel Extender. Continue reading →

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