My HP Z800 workstation failed power up after a shutdown - power switch flashes red 4x and beeps, showing power supply overload. Supply is 850W and puts out multiple 12V lines and 1x 5V line (photos attached for those interested). No schematic available, but when I stripped it down there was an obviously bulging cap (470uF 35V). Didn't have one handy but replaced temporarily with a Nichicon 1000uF 50V cap and it's now working fine again.
Will this cap suffice longer-term or should I replace with the correct value/same cap?
Original is an LTEC LZG series ultra-low impedance cap -
http://www.compostar.com/Ltec/LZG.pdf. Replacement a Nichicon VZ series -
http://products.nichicon.co.jp/en/pdf/XJA043/e-vz.pdf. Both are 105C rated. I'm unsure how critical the cap parameters might be in this situation. Seems the Ltec is still available.
The supply has two Adda fans fitted. I can numbers of these specific fans on eBay from Chinese suppliers at low price and am wary as to whether they're genuine or not. Would I be better to buy higher price non-Adda fans from reliable suppliers (at considerably higher prices)? The spec is straightforward - Adda datasheet indicates 80x80x25mm 12V 0.21A (cf 0.26A on actual fan), 48CFM, 3600rpm - which should be an easy spec to meet.