Casetronic C137 120watt power supply
Has anyone done any hardware hacking/troubleshooting of this power supply: http://220.127.116.11/products/PowerS.../P4/DC-P4.html
Moving this thread here from general hardware discussion, I've found that with my PD10000 board, when I apply external power to the supply, the system starts itself. Using a normal desktop ATX supply, this does not happen. Called a tech at Casetronic, he reccomended using the C4 power supply...which, well, will cost more money, and I'd much rather they fix their broken design than buy more stuff from them.
I've gone to look at the ATX power supply spec, and I'm not sure where the problem may lie...maybe the PWR_ON line is getting held low for too long when power is applied to the board for some reason? Unfortunately I don't have access to a digital oscilloscope right now, I've got to wait until next week until I get to play with such toys. Just thought I'd pop some thoughts on here and see if any real EEs (I just play one on TV!) have some better ideas.
*EDIT* I applied the fix described at http://www.casetronic.com/faq/faq-CL10000.asp and it did nothing...then again, guess I shouldn't have expected it to, it fixes a different problem (PWR_OK signal gets sent too soon, power rails aren't stable yet...board tries to power on but gets stuck in a weird state. Capacitor delays the PWR_OK signal a bit, just enough for the power to stabilize. But my board isn't experiencing that particular problem)