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I bought an IBM 5150 but it has issues...


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It will turn on and make some noise but I think it is the power supply though and I tried it with my Commodore 1902 Monitor RGBI and nothing but does flicker when I shut the computer off, Also none of the drives light up or anything that I can see and when I use composite output on it there is a short 2 or 3 inch horizontal line that shows up just a little bit off center of the screen but repeats downwards?

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The fan 'might' be resurrectable...

 

remove it from the system, note its power needs and polarity, then submerge it in a plastic basin full of isopropyl. Connect the power, and give it a manual push to start it turning, and let it push the liquid around a few minutes.  It will dislodge a good deal of the filth that has been sucked into the fan.

 

It wont fully recover an old fan though. Best to just replace it, but as a temp fix while awaiting that replacement in the mail, it works, usually.

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