Originally Posted by lillevig
Had the power supply go out on my TCD240 box. Fortunately, I had a spare unsub unit stored away for just this purpose so I'm back up. Initial indications are that it is the 5 volt side that is bad. No bulging caps, no obvious hot spots on the board so maybe it's just the regulator. here's the question: does anyone have a schematic for this thing?
What voltage readings are you getting under load on the +5 and +12 lines?
I think those schematics are printed with a special ink made of unobtanium.
Even without bulges, I'd try replacing the caps under the heat sink overhang.
You know, the ones that are hardest to get to.