that power supply is TL431/optoisolated shunt regulated. any 1 of those parts in that feedback network can cause this. It can also cause the tick-tick-tick with no full startup too. lol.
Post #18 by techknight
| Source Forum | Macintosh plus anode cap => dead screen? — #18 |
|---|---|
| Category | Hardware |
| Post Date | Wed, 4 Sep 2013 - 02:27 |
| Original URL | https://68kmla.org/bb/threads/macintosh-plus-anode-cap-gt-dead-screen.28693/ |
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