• Please review our updated Terms and Rules here

Search results

  1. T

    Apple II Europlus - Ram issue white blocks instead of spaces

    Hi All, I have just started to repair a Europlus which has a strange issue. The machine will boot to the applesoft “Apple ][“ ] prompt, and will even allow a small basic program or a call -151 to run. After a small amount of time white block start to appear on the screen in the place of spaces...
  2. T

    Working 5150 Died, can I test Motherboard caps in situ with ESR?

    Hi All, Over the last year I have been working on building a nice clean 5150. And had just got to the point where I had the machine working reliably when it stopped working ... The machine was my second 5150 which I was also using to debug a fault on another 5150 (which has a constant noise on...
  3. T

    IBM 5150 continuous beep on powerup

    Hi, I have a battered old IBM 5150 PC (64-256k revision) that I am trying to resurrect. I cleaned up the mainboard and power supply, but when I came to test powering on the board, the C7 Capacitor at the top right of the mainboard (near J7 / COMP text) popped and smoked after about 10...
Back
Top