• Hello MLAers! We've re-enabled auto-approval for accounts. If you are still waiting on account approval, please check this thread for more information.

Search results

  1. B

    Voltage reading on Mac Classic II not making sense

    Ah, yes! I do mean that section. I am measuring where the wires come from the AB to the neck board. Sorry, I should have used component numbers. Here they are: Neck board wire voltages: HC6 (Red): 0.075v HC2 (Orange): 5.74v HC3 (Yellow): 0.007v (PROBLEM??) HC1, HC8 (Black): (ground) HC5...
  2. B

    Voltage reading on Mac Classic II not making sense

    @bibilit, I checked the neckbeard connections and they looked fine. I reflowed all the large connections on the neck board anyway. Then I checked connectivity from the AB to the neck board for all wires. No problems. Retested and no change. While running, checked the voltages on the seven...
  3. B

    Voltage reading on Mac Classic II not making sense

    Thank you for the help! I will check the wires going to the neck board as well as the neck board itself. Are there documented voltages on the neck board or those wires I can check?
  4. B

    Voltage reading on Mac Classic II not making sense

    For clarification: All caps on analog and LB were replaced. Some were leaking. I cleaned the logic board vis IPA scrub, then soak in hot water and soap, then scrub then soak in ipa and then toothbrush scrub Verified there is no high voltage via audio spectrum analyzer, and also no static when...
  5. B

    Voltage reading on Mac Classic II not making sense

    Hi all! First time poster. I obtained a Classic II while back and am not restoring it. Apparently I am a glutton for punishment because I haven’t given up yet. I cleaned and recapped and resoldered the Egret chip. The problem is that computer boots with the bing sound (good!) but no video and...
Back
Top